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Cayin

Cayin - RU9

Portable DAC & Amplifier
Sale price₹ 49,999
GET 18% GST INPUT

One of the reasons headphones and earphones in India are more expensive than overseas is because of the Goods & Services Tax in India.

Don't let the GST input go to waste especially if you can avail an offset.

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DELIVERY
Dispatches in
What does "ships within 24/48 hours" mean?

In a nutshell, ships within 24/48 hours basically means that your product will be shipped out or dispatched from our warehouse within 24/48 hours after placing the order. It also indicates that the products are readily available at our warehouse and once we receive your order, we dispatch it out at the earliest either on the same day or the next working day depending on when you’ve placed your order.


What it does not mean:

A lot of our customers assume that it means their order will get delivered to them within 24/48 hours, but that’s not what it means. For an order to reach you, it can take anywhere up to 3-4 business days, depending on which part of India you are placing an order from.

For an accurate timeline, you can enter your pin code on the product page and check for an estimated date of arrival.

Delivery By:

7 Day Replacement Guarantee

In case you receive the Cayin - RU9 with a manufacturing defect, please raise a return request within 7 days of delivery.

However, if you receive an incorrect / damaged / different product or one with missing accessories, please raise a return request within 24 hours of delivery. In case you receive a product with a missing, incorrect, or faulty accessory, you will be given a replacement accessory instead of the entire product.

Please make sure that the product is in the original packaging with all the accessories it came with. We'll also need an unboxing video and images of the parcel to investigate about the discrepancy. You may be asked to share images of the product and the packaging received for us to determine the damage or defect prior to approving the return request. The free replacement will be shipped only once the original order is returned.

A replacement will be issued only if:

- It is found to be defective
- It is determined that the product was not damaged while in your possession
- The product is not different from what was shipped to you
- The product is returned in original condition (with brand’s/manufacturer's box, MRP tag intact, user manual, warranty card and all the accessories therein)

READ MORE

Warranty & Services

Don't sweat it, this Cayin - RU9 comes with a 1 Year warranty from Cayin that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about Cayin's warranty in India.

Club Audiophile

Join Club Audiophile to begin your pursuit of great sound. Earn points and save on every purchase.

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Why Cayin is Special

🇨🇳

Designed in China
Established & Reputed

Trust us, our reputation speaks for itself 🏆!


I believe that when a brand has decades of proven excellence, you can invest with confidence knowing your purchase is backed by years of audio engineering expertise. These products come from manufacturers with extensive histories of innovation and unwavering commitment to sonic excellence. Think of them like luxury watch brands - their reputation has been earned through decades of consistent quality and innovation.


With their extensive history of innovation and countless satisfied customers worldwide, you can be confident your investment is backed by proven audio engineering expertise and industry leadership 📈.


When you see "🎖️ Established & Reputed" products, expect time-tested excellence from manufacturers who've consistently demonstrated mastery in audio engineering for generations.
Revered by Audiophiles

Audiophiles can be really picky 😤, and if the audiophile community says something sounds good, you can bet it's exceptional! I believe that earning audiophile reverence is like getting a standing ovation from music critics - it doesn't happen unless you've truly achieved something special. This audio gear has earned widespread acclaim from audiophiles worldwide, a community renowned for exacting standards and unwavering commitment to high-fidelity reproduction.


These discerning enthusiasts particularly value its extraordinary precision in sound reproduction and remarkable capability to create thoroughly immersive listening experiences. The audiophile community's endorsement carries significant weight because of their extensive experience with high-end equipment 🏆.


When you see "🙌🏻 Revered by Audiophiles" products, expect audiophile-grade excellence that satisfies even the most demanding listeners and consistently exceeds the highest standards.
🐣

Born in 1993

Why we love this DAC/Amp

Premium Economy

Sensible spending meets sophisticated quality in perfect harmony 💫.


I tend to describe premium economy products as finding that sweet spot where exceptional value meets refined performance. Think of it like business class comfort at economy prices - you're getting significantly more than what you paid for. These headphones deliver a refined listening experience that rivals more expensive alternatives, making them an intelligent choice for discerning listeners who appreciate both value and excellence.


This thoughtfully curated selection demonstrates our commitment to bringing you outstanding sound quality and robust construction without requiring a significant financial investment. Each product has been meticulously evaluated to ensure it delivers performance characteristics typically associated with higher price brackets.


When you see "💎 Premium Economy" products, expect refined audio experiences that bridge the gap between entry-level and high-end offerings, delivering impressive clarity and features at accessible price points.
Serious Audiophiles Only

For those who have ventured deep into high-fidelity audio 🎯, the pursuit of sonic excellence becomes an endless journey of discovery and refinement. I believe that serious audiophiles demand equipment that can satisfy the most exacting standards and deliver performance that pushes boundaries. These products represent the pinnacle of acoustic engineering, incorporating advanced technologies and meticulous craftsmanship that enable them to reproduce music with utmost fidelity.


Each product has undergone rigorous evaluation to ensure it delivers exceptional performance that discerning listeners demand, from precise frequency response to impeccable detail retrieval and sophisticated sound staging. These devices incorporate premium components and engineering excellence that justify their position at the apex of audio performance.


When you encounter "🦈 Serious Audiophiles Only" products, expect uncompromising performance that satisfies the most demanding requirements and elevates critical listening to new heights.
For Audiophiles On-the-Go

In my experience, finding great audio gear that performs well on the move is like discovering a powerful sports car that’s also fuel efficient. Products marked For Audiophiles On-the-Go are designed to deliver remarkable sound quality without weighing you down. Whether you’re commuting, working remotely, or just travelling light, these products offer the perfect balance of portability and performance 🚶‍♂️.


What makes them special? They’re often compact, lightweight, and built with battery-efficient components that don’t compromise on sonic detail. From portable DAC/Amps to foldable headphones and wireless IEMs, this category is for those who demand great sound anytime, anywhere — no bulky setups or power bricks required.


When you see '🛺 For Audiophiles On-the-Go' products, expect: pocket-friendly size, reliable battery life, and premium sound wherever life takes you — ideal for travel, work, or daily use.
Use Wirelessly with Bluetooth

I tend to describe Bluetooth audio as wireless freedom with fewer strings attached — literally. When you see Use Wirelessly with Bluetooth, it means you can pair your headphones or IEMs with phones, laptops, or even TVs — all without reaching for a cable 🎶. It’s convenient, clutter-free, and great for everyday listening.


What’s happening behind the scenes is your gear is using Bluetooth codecs like SBC, AAC, LDAC, or aptX to compress and transmit your music wirelessly. Better codecs mean higher quality and lower latency. Of course, there’s a trade-off — Bluetooth won’t match the quality of wired gear, but today’s advancements have made the gap much smaller than before.


When you see '✂️ Use Wirelessly with Bluetooth' products, expect: tangle-free convenience and solid sound quality — great for commuting, workouts, or casual listening.
Battery Life

In my experience, battery life is one of those things that separates a good day from a frustrating one. It's like having a fuel gauge you can rely on — longer battery life means less charging and more uninterrupted music. Whether you're on a flight or just commuting across town, this is one spec you don’t want to overlook 🔋.


Technically, battery life refers to the hours your device can play music on a single charge. Today’s headphones and DACs can range from 4 to 40+ hours, depending on things like Bluetooth codec, volume, and active features like ANC. More battery life also means better travel and portability, though it might come at the cost of size or weight.


When you see '⏳ Battery Life' products, expect: longer listening sessions, fewer charging breaks, and stress-free portability for music that goes the distance.
Battery Capacity

I usually think of battery capacity like the size of your water tank — it determines how long the tap can run before drying up. In audio gear, higher capacity means more playtime, more power for your amp section, and better performance during high-demand usage 🧠. It’s especially important if your gear also powers powerful drivers or amps.


Measured in mAh (milliamp-hours), battery capacity helps you gauge how long your headphones, DAC, or amplifier will last between charges. Devices with higher capacity (like 3500mAh+) are ideal for extended use or when you’re away from a power source. Just know, larger capacity often means longer charging time and a slightly bulkier design.


When you see '🔋 Battery Capacity' products, expect: more power and longer playtimes — ideal for travel, long workdays, or heavy use without worrying about recharging.
Works Great with Type-C

Don't have a 3.5mm headphone jack on your phone?


No need to worry 📞 - I believe these products represent the future of seamless audio connectivity. Think of Type-C as the universal language that all modern devices are learning to speak. It's like having a master key that works with your smartphone, laptop, tablet, and practically every new device you'll buy. These headphones connect directly to your Type-C port, delivering pristine digital audio without any dongles or adapters cluttering your setup.


The direct Type-C connection ensures both convenience and optimal audio performance, maintaining the integrity of your listening experience through a clean digital signal path. You'll enjoy plug-and-play functionality with universal compatibility, eliminating those frustrating moments of searching for the right adapter.


When you encounter "📱 Works Great with Type-C" products, expect seamless connectivity with modern devices and future-proof design that grows with your tech ecosystem.
Connect With Cable

In my experience, there’s still nothing like the dependability of a wired connection when it comes to audio 🎧. I love describing it as the direct flight of music — no delays, no turbulence. When a product says “Connect with Cable,” it means you’re getting the most reliable signal path, with zero wireless compression and minimal interference.


Here’s what’s actually happening: a physical cable transmits uncompressed analog or digital signals directly from your source to your gear. This results in lower latency, no signal drops, and consistently better sound — especially when paired with a good DAC or amp. It’s ideal for critical listening, gaming, and professional use. The trade-off? You’re tethered — but for a lot of audiophiles, that’s a small price to pay for sonic purity.


When you see '🔗 Connect With Cable' products, expect: pure, uninterrupted sound quality that lets your gear perform at its full potential — perfect for focused, high-fidelity listening.

Why it Sounds Amazing

DAC Chip

I like to say the DAC chip is the heart of any audio device — it’s the part that actually transforms digital files into music you can hear 🎧. Think of it like a chef decoding a recipe to create a delicious meal. The better the DAC chip, the more faithfully it translates your music. And in my experience, a great DAC can completely change how your headphones sound.


Now, here’s what’s actually happening: a Digital-to-Analog Converter (DAC) takes digital signals (your MP3s, FLACs, or streams) and converts them into an analog waveform your ears can enjoy. Different DAC chips — like those from ESS, AKM, or Cirrus Logic — offer their own sound signatures, levels of clarity, and noise performance. A good DAC ensures accurate timing, minimal distortion, and exceptional resolution.


When you see '⚙️ DAC Chip' products, expect: clean, detailed audio and better synergy with high-quality headphones — perfect for anyone upgrading from average sound to audiophile quality.
Power Output

I like to think of power output in audio gear like engine horsepower, it determines how much muscle your setup really has 💪. Whether you’re trying to drive a pair of power-hungry planar headphones or just want headroom for dynamic peaks, power output is the spec you want to check first.


Technically, it refers to the amount of electrical power (measured in mW or Watts) an amp or DAC/Amp combo can deliver to your headphones. More power means better control, improved dynamics, and the ability to handle demanding gear without distortion. But more isn’t always better, too much power with sensitive IEMs can introduce hiss or harshness.


When you see '🚀 Power Output' products, expect: strong driving capability, better dynamics, and optimal performance with headphones that need serious juice to shine.
Balanced Output

I often say balanced output is like using both hands to carry something heavy — it distributes power evenly and keeps things stable. In audio gear, balanced output helps reduce unwanted noise and interference, especially over longer cables. Think of it as a cleaner, more efficient way to transmit your music, ideal for anyone using high-end DACs, amps, or studio-grade headphones 🎧. You’ll typically find it on gear with XLR or 4.4mm connectors, and it's a must-have if you’re chasing that ultra-clean signal path.


Here’s what’s actually happening: a balanced output uses two separate signals, one inverted, so when interference is picked up along the cable, it gets cancelled out when the signals are recombined. The result? Cleaner audio, better dynamic range, and more power output — especially when paired with balanced headphones. The trade-off? You’ll need gear that supports balanced connections on both ends to really enjoy the benefits.


When you see '⚖️ Balanced Output' products, expect: ultra-low noise, more headroom, and better synergy with high-impedance headphones or sensitive IEMs — ideal for serious listening setups.
Decodes Upto

When I see "Decodes up to" listed in product specs, I think of it like a music translator that speaks more languages than you’ll ever need. It tells you how far a DAC or audio device can go in handling hi-res formats—think PCM, DSD, or MQA—and at what resolution. 🧠🎶


Technically, this refers to the maximum bit depth and sample rate a DAC can process—like 32-bit/768kHz PCM or DSD512. The higher these numbers, the more detailed and lifelike the audio can potentially sound. But remember, real-world improvements depend on the recording quality and your headphones, not just specs alone.

Enhance Your Listening Experience On The Go With Cayin RU9

Cayin introduces the RU9, a cutting-edge portable DAC & amp that combines dual AK4493SEQ DAC chips, KORG Nutube 6P1 vacuum tube technology and Gen5 3-stage amplification in a compact 150g package. This versatile device supports high-resolution audio up to DSD512 and PCM 32bit/768kHz, features 3.5mm and 4.4mm outputs with three-stage gain control, and offers multiple power modes including a performance-enhancing Hyper Mode. Complete with Bluetooth 5.1 supporting premium codecs like LDAC and aptX HD, a CNC-machined aluminum chassis, magnetic leather case, and intuitive controls with a 0.96" display, the RU9 represents a premium solution for audiophiles seeking exceptional portable audio performance.

Embeds Dual AK4493SEQ DAC Chips For Exceptional Channel Separation

Cayin RU9 features a sophisticated dual DAC architecture utilising two AK4493SEQ DAC chips in mono mode configuration. This fully differential output design ensures each channel is processed independently, resulting in exceptional channel separation and minimal crosstalk for superior audio performance.

Features An Exceptional 4-Channel Balanced Amplification Circuit For Hi-Fi Audio

Cayin RU9 features an advanced 4-channel balanced amplification circuit, where the audio signal passes through a balanced headphone amplifier utilising two ultra-low-noise Texas Instruments OPA1662 op-amps and four Nexperia power transistors, resulting in exceptional signal stability and minimal interference for superior audio performance.

Fused With Gen5 3-Stage Amplification Architecture For Accurate Audio Output

Cayin RU9 features a high-quality Gen5 3-stage amplification architecture that incorporates six Toshiba 2SK209 audio-grade JFETs, along with a carefully tested KORG Nutube 6P1 dual triode tube.

Stage 1: JFET Buffer Amplifier
Built with low-noise 2SK209 JFETS optimised for buffering.
Stage 2: Nutube Voltage Amplifier
Powered by Nutube 6P1, this stage delivers voltage gain while defining the RU9's unique tube timbres.
Stage 3: Buffer Driver
Selected 2SK209 JFET transistors are employed to create a high-performance source-load circuit. Significantly enhanced the current driving capability of the tube timbre circuit.

Equips XU316 Processor, Anti-Vibration System & Other Components For Enhanced Performance

Cayin RU9 showcases cutting-edge technology with its XMOS XU316 processor, featuring a 16-core 32-bit RISC architecture that supports native DSD512 and PCM 32bit/768kHz playback. Its innovative design includes a custom-engineered anti-vibration system for the Nutube tube, complete with FPC flexible PCB, silicone damping sleeve, and pin suspension system to eliminate interference. When operating in DC Mode, the device automatically activates Hyper Mode, enhancing the amplifier's performance by increasing quiescent current and operating voltage for superior clarity, wider soundstage, and more dynamic punch.

Features Three Distinct Timbre Modes: Classic Tube, Modern Tube and Solid-State

Cayin's engineers have carefully designed two sets of feedback circuits to create the RU9's distinct timbres. Users can easily switch between the three available timbres using the dedicated Timbre button.

Classic Tube Timbre
Without NFB circuitry, stages work independently with local feedback determining overall gain. This creates classic tube amplifier distortion with higher THD, resulting in more thermal noise and richer tube-like sound.
Modern Tube Timbre
A large-loop NFB circuit will determine the total gain. By incorporating NFB over multiple amplification stages, the THD will be reduced significantly. The harmonic distortion characteristics and sound signature lean more towards a modern style, with greatly reduced thermal noise and a slightly cleaner tube sound.
Solid-state Timbre
Built with op-amps and precision-tuned peripheral circuits. Delivers accurate resolution, fast dynamics, and neutral tonality.

Embeds Dual AK4493SEQ DAC Chips For Exceptional Channel Separation

Cayin RU9 features a sophisticated dual DAC architecture utilising two AK4493SEQ DAC chips in mono mode configuration. This fully differential output design ensures each channel is processed independently, resulting in exceptional channel separation and minimal crosstalk for superior audio performance.

Features An Exceptional 4-Channel Balanced Amplification Circuit For Hi-Fi Audio

Cayin RU9 features an advanced 4-channel balanced amplification circuit, where the audio signal passes through a balanced headphone amplifier utilising two ultra-low-noise Texas Instruments OPA1662 op-amps and four Nexperia power transistors, resulting in exceptional signal stability and minimal interference for superior audio performance.

Fused With Gen5 3-Stage Amplification Architecture For Accurate Audio Output

Cayin RU9 features a high-quality Gen5 3-stage amplification architecture that incorporates six Toshiba 2SK209 audio-grade JFETs, along with a carefully tested KORG Nutube 6P1 dual triode tube.

Stage 1: JFET Buffer Amplifier
Built with low-noise 2SK209 JFETS optimised for buffering.
Stage 2: Nutube Voltage Amplifier
Powered by Nutube 6P1, this stage delivers voltage gain while defining the RU9's unique tube timbres.
Stage 3: Buffer Driver
Selected 2SK209 JFET transistors are employed to create a high-performance source-load circuit. Significantly enhanced the current driving capability of the tube timbre circuit.

Equips XU316 Processor, Anti-Vibration System & Other Components For Enhanced Performance

Cayin RU9 showcases cutting-edge technology with its XMOS XU316 processor, featuring a 16-core 32-bit RISC architecture that supports native DSD512 and PCM 32bit/768kHz playback. Its innovative design includes a custom-engineered anti-vibration system for the Nutube tube, complete with FPC flexible PCB, silicone damping sleeve, and pin suspension system to eliminate interference. When operating in DC Mode, the device automatically activates Hyper Mode, enhancing the amplifier's performance by increasing quiescent current and operating voltage for superior clarity, wider soundstage, and more dynamic punch.

Features Three Distinct Timbre Modes: Classic Tube, Modern Tube and Solid-State

Cayin's engineers have carefully designed two sets of feedback circuits to create the RU9's distinct timbres. Users can easily switch between the three available timbres using the dedicated Timbre button.

Classic Tube Timbre
Without NFB circuitry, stages work independently with local feedback determining overall gain. This creates classic tube amplifier distortion with higher THD, resulting in more thermal noise and richer tube-like sound.
Modern Tube Timbre
A large-loop NFB circuit will determine the total gain. By incorporating NFB over multiple amplification stages, the THD will be reduced significantly. The harmonic distortion characteristics and sound signature lean more towards a modern style, with greatly reduced thermal noise and a slightly cleaner tube sound.
Solid-state Timbre
Built with op-amps and precision-tuned peripheral circuits. Delivers accurate resolution, fast dynamics, and neutral tonality.

Features 3 Versatile Power Modes & Supports QC3.0 and PD2.0 Fast Charging

Cayin RU9 features three versatile power modes for optimal performance in any situation. When connected via USB, it operates in Dongle Mode for portable use. With the power adapter connected, users can choose between Battery Mode, which uses USB power with battery backup, or DC Mode, which enables direct power delivery and automatically activates Hyper Mode for maximum performance. The device supports QC3.0 and PD2.0 fast charging protocols for convenient power management.

Equips Magnetic Attachment System & Premium Accessories For Universal Compatibility

Cayin RU9 features a thoughtfully designed magnetic attachment system that seamlessly connects to smartphones and tablets. The package includes a premium magnetic leather case with precise cutouts and integrated backing for secure, stylish protection, along with a high-quality L-shaped USB interconnect cable featuring shielded, tightly braided construction to minimise signal loss. For Android users, a magnetic adaptor ring ensures universal compatibility.

Features Multiple Outputs & Wireless Connectivity For Seamless Pairing

Cayin RU9 offers exceptional versatility with dual audio outputs featuring 3.5mm and 4.4mm connections, each with 3-stage gain and output level control. The device supports comprehensive digital audio protocols, including S/PDIF input/output and USB Audio DAC (with UAC1.0 and UAC2.0 compatibility, including driver-free mode for gaming consoles). Enhanced by Bluetooth 5.1 technology powered by Qualcomm QCC5125, it supports premium audio codecs including LDAC, aptX HD, aptX Adaptive, AAC, and SBC for superior wireless audio transmission.

Features A User-Friendly Design With Premium Controls & High-Quality Display

Cayin RU9 is meticulously designed with user experience in mind, featuring a sleek 0.96" display with adjustable brightness, premium knurled volume knob, and tactile buttons for precise control. At its heart lies the innovative Nutube 6P1 window, precision-cut using laser micro-drilling technology to block EMI while showcasing the tube's warm glow during playback. The intuitive multicolour indicator system efficiently displays the playback details.

Yellow - 44.1kHz/48kHz
Green - 88.2kHz/96kHz
Dark Blue - 176.4kHz/192kHz
Purple - 352.8kHz/384kHz
Light Blue - 705.6kHz/768kHz
White - DSD64/DSD128/DSD256/DSD512
Red - Charging indicator

Crafted With Aluminium Chassis & Optimal Heat Dissipation & Offers Portability

Cayin RU9 embodies elegance in a remarkably compact form factor, weighing just 150g with a slim 15mm profile. Its unibody CNC-machined aluminium chassis showcases meticulous craftsmanship through precision polishing, while an advanced thermal-conductive structure ensures optimal heat dissipation for sustained high performance. This thoughtful design makes the RU9 exceptionally portable and comfortable for extended use, perfect for audiophiles on the move.

Features 3 Versatile Power Modes & Supports QC3.0 and PD2.0 Fast Charging

Cayin RU9 features three versatile power modes for optimal performance in any situation. When connected via USB, it operates in Dongle Mode for portable use. With the power adapter connected, users can choose between Battery Mode, which uses USB power with battery backup, or DC Mode, which enables direct power delivery and automatically activates Hyper Mode for maximum performance. The device supports QC3.0 and PD2.0 fast charging protocols for convenient power management.

Equips Magnetic Attachment System & Premium Accessories For Universal Compatibility

Cayin RU9 features a thoughtfully designed magnetic attachment system that seamlessly connects to smartphones and tablets. The package includes a premium magnetic leather case with precise cutouts and integrated backing for secure, stylish protection, along with a high-quality L-shaped USB interconnect cable featuring shielded, tightly braided construction to minimise signal loss. For Android users, a magnetic adaptor ring ensures universal compatibility.

Features Multiple Outputs & Wireless Connectivity For Seamless Pairing

Cayin RU9 offers exceptional versatility with dual audio outputs featuring 3.5mm and 4.4mm connections, each with 3-stage gain and output level control. The device supports comprehensive digital audio protocols, including S/PDIF input/output and USB Audio DAC (with UAC1.0 and UAC2.0 compatibility, including driver-free mode for gaming consoles). Enhanced by Bluetooth 5.1 technology powered by Qualcomm QCC5125, it supports premium audio codecs including LDAC, aptX HD, aptX Adaptive, AAC, and SBC for superior wireless audio transmission.

Features A User-Friendly Design With Premium Controls & High-Quality Display

Cayin RU9 is meticulously designed with user experience in mind, featuring a sleek 0.96" display with adjustable brightness, premium knurled volume knob, and tactile buttons for precise control. At its heart lies the innovative Nutube 6P1 window, precision-cut using laser micro-drilling technology to block EMI while showcasing the tube's warm glow during playback. The intuitive multicolour indicator system efficiently displays the playback details.

Yellow - 44.1kHz/48kHz
Green - 88.2kHz/96kHz
Dark Blue - 176.4kHz/192kHz
Purple - 352.8kHz/384kHz
Light Blue - 705.6kHz/768kHz
White - DSD64/DSD128/DSD256/DSD512
Red - Charging indicator

Crafted With Aluminium Chassis & Optimal Heat Dissipation & Offers Portability

Cayin RU9 embodies elegance in a remarkably compact form factor, weighing just 150g with a slim 15mm profile. Its unibody CNC-machined aluminium chassis showcases meticulous craftsmanship through precision polishing, while an advanced thermal-conductive structure ensures optimal heat dissipation for sustained high performance. This thoughtful design makes the RU9 exceptionally portable and comfortable for extended use, perfect for audiophiles on the move.

Meticulous Design

Cayin RU9 is crafted with unibody CNC-machined aluminium chassis for impeccable aesthetics.

Display Screen

Cayin RU9 features a display screen that displays the true playback details.

Volume Knob

Cayin RU9 embeds a volume knob in an aesthetic way that allows you to adjust volume conveniently.

Accessories to Get you Started

1. Magnetic Leather Case
2. L Shaped USB Interconnect Cable

All You Need To Know About The Cayin RU9

Headphone Output
3.5mm (Single-ended)
4.4mm (Balanced)
Input
USB IN
S/PDIF
DAC
Dual AKM AK4493SEQ
Tube
KORG Nutube 6P1
USB Processor
XMOS XU316
Charge Port
USB Type-C (QC3.0/PD2.0)


1 Year Warranty

Don't sweat it, this Cayin - RU9 comes with a 1 Year warranty from Cayin that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about Cayin's warranty in India.

Elevating Hi-Fi Experiences Since 1993

Founded in 1993, Zhuhai Spark Electronic Equipment Co., Ltd. has been dedicated to perfecting audio equipment under the brand name Cayin. With a commitment to delivering top-notch Hi-Fi products, Cayin embeds cultural richness into its audio range, catering to diverse budgets to make premium music experiences accessible. From tube amplifiers and CD players to speakers, Cayin maintains a consistent benchmark of quality, ensuring a compelling price-to-performance ratio across its offerings.

In 2013, Cayin expanded its horizons into personal audio, unveiling a line of Digital Audio Players (DAP) and desktop audio products. The brand further diversifies its portfolio with portable audio products, including amplifiers and in-ear monitors, empowering users with a broad spectrum of audio choices.

Explore Collection

Have a question? Get in touch!

Check out the most common questions our customers ask. Still have questions? Talk to our Headphone Gurus.

Our customer support is available Monday to Friday: 10.30am-6:30pm.Average answer time: 2-3 Hours

Other Details

Generic Name DAC & Amp
Country Of Origin China
Importer Details Importers Name: Ferrari Video
Address: 63/18, 1st Main Road, Gandhi Nagar, Chennai - 600020
Contact No: 044-24420733
Net Quantity 1
Manufacturer Details Name: Zhuhai Spark Electronic Equipment Co.,Ltd.
Address: No.9 Lianfa Road Shuanglin Zone Liangang Industrial Park Zhuhai City Guangdong Province China, Postcode: 519045
Package Contents Cayin RU9
Magnetic Leather Case
L Shaped USB Interconnect Cable


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  • Premium Economy

    Sensible spending meets sophisticated quality in perfect harmony 💫.


    I tend to describe premium economy products as finding that sweet spot where exceptional value meets refined performance. Think of it like business class comfort at economy prices - you're getting significantly more than what you paid for. These headphones deliver a refined listening experience that rivals more expensive alternatives, making them an intelligent choice for discerning listeners who appreciate both value and excellence.


    This thoughtfully curated selection demonstrates our commitment to bringing you outstanding sound quality and robust construction without requiring a significant financial investment. Each product has been meticulously evaluated to ensure it delivers performance characteristics typically associated with higher price brackets.


    When you see "💎 Premium Economy" products, expect refined audio experiences that bridge the gap between entry-level and high-end offerings, delivering impressive clarity and features at accessible price points.
  • Serious Audiophiles Only

    Diving deeper into exploring the hobby is never enough.


    If you're an audiophile on a hunt for a device that meets your high standards, this is one such headphone or gear designed for discerning audiophiles like you in mind.


    If you see a product marked with “🦈 Serious Audiophiles Only" we assure you that this device can match your depth of knowledge and expertise to take your passion for audio to the next level.

  • Balanced Output

    Upgrading from single-ended to balanced can be the easiest way to improve your sound.


    This DAC, Amp or Hi-Res player offers a balanced output, ensuring pristine audio quality with minimised interference and enhanced clarity for your listening pleasure.


    If you see a product marked as "⚖️ Balanced Output”, get ready for a symphony of crystal-clear tunes, free from any unwanted noise drama!

  • Battery Life

    No need to be connected to the power socket with these devices.


    This headphone or gear promises long-lasting battery performance, ensuring your device keeps up with your adventures without missing a beat.


    If you see products marked as “⏳ Battery Life”, be rest assured that you'll enjoy extended usage time, whether it's for uninterrupted music playback, extended gaming sessions, or all-day productivity, keeping you powered up throughout your day.

  • Power Output

    When you need that juice to get the best out of your products.


    This headphone or gear packs a punch, revealing the product's impressive power output capabilities, ensuring it can handle even the most demanding products with ease.


    If you see products marked as “🚀 Power Output”, you're in for a treat with robust performance for driving high-fidelity products without breaking a sweat.

Sold out
Headphone-Zone-iFi Audio-xDSD-GryphonHeadphone-Zone-iFi Audio-xDSD-Gryphon
iFi Audio - xDSD Gryphon Portable DAC & Amp Sale price₹ 49,999 Regular price₹ 59,999
  • I Am Worth It

    Only for the most passionate and discerning audiophiles who want the very best.


    Audiophiles desire class-defining products that not only meet their needs but truly blows their expectation in quality and performance.


    If you see a product marked with “👑 I Am Worth It," rest assured that it's a timeless investment. Its value cannot be measured with ordinary benchmarks and is an indulgence only for a select few.

  • Balanced Output

    Upgrading from single-ended to balanced can be the easiest way to improve your sound.


    This DAC, Amp or Hi-Res player offers a balanced output, ensuring pristine audio quality with minimised interference and enhanced clarity for your listening pleasure.


    If you see a product marked as "⚖️ Balanced Output”, get ready for a symphony of crystal-clear tunes, free from any unwanted noise drama!

  • Use Wirelessly with Bluetooth

    Enjoy the convenience of seamless wireless connectivity


    This headphone or gear indicates that the product supports wireless connectivity via Bluetooth, freeing you from the tangles of cords and cables.


    If you see products marked as “✂️ Use Wirelessly with Bluetooth”, enjoy the freedom to stream music, make calls, and more, all without being tethered to your device, giving you the flexibility to move around and multitask with ease.

  • Battery Life

    No need to be connected to the power socket with these devices.


    This headphone or gear promises long-lasting battery performance, ensuring your device keeps up with your adventures without missing a beat.


    If you see products marked as “⏳ Battery Life”, be rest assured that you'll enjoy extended usage time, whether it's for uninterrupted music playback, extended gaming sessions, or all-day productivity, keeping you powered up throughout your day.

  • DAC Chip

    Know the secret to your pristine audio.


    This headphone or gear reveals the secret sauce behind superior audio quality, highlighting the presence of a high-performance DAC chip for pristine sound reproduction.


    If you see products marked as “⚙️ DAC Chip”, expect to experience your music with unparalleled clarity, detail, and fidelity, ensuring that every note and nuance is faithfully reproduced for your listening pleasure.

  • Power Output

    When you need that juice to get the best out of your products.


    This headphone or gear packs a punch, revealing the product's impressive power output capabilities, ensuring it can handle even the most demanding products with ease.


    If you see products marked as “🚀 Power Output”, you're in for a treat with robust performance for driving high-fidelity products without breaking a sweat.

Sold out
Headphone-Zone-STAX-SRM-D10-IIHeadphone-Zone-STAX-SRM-D10-II
STAX - SRM-D10 II Portable Electrostatic Energiser Sale price₹ 79,999 Regular price₹ 94,990
  • Premium Economy

    Sensible spending meets sophisticated quality in perfect harmony 💫.


    I tend to describe premium economy products as finding that sweet spot where exceptional value meets refined performance. Think of it like business class comfort at economy prices - you're getting significantly more than what you paid for. These headphones deliver a refined listening experience that rivals more expensive alternatives, making them an intelligent choice for discerning listeners who appreciate both value and excellence.


    This thoughtfully curated selection demonstrates our commitment to bringing you outstanding sound quality and robust construction without requiring a significant financial investment. Each product has been meticulously evaluated to ensure it delivers performance characteristics typically associated with higher price brackets.


    When you see "💎 Premium Economy" products, expect refined audio experiences that bridge the gap between entry-level and high-end offerings, delivering impressive clarity and features at accessible price points.
  • For Enthusiasts on a Budget

    We are here to help you find the best bang for your buck.


    This headphone or gear is made for all passionate hobbyists who want top-notch gear without breaking the bank.


    If you see a product marked as “🪴 For Enthusiasts on a Budget”, get ready to indulge in your music with high-quality, affordable products that keep your wallet happy and your enthusiasm alive!

  • DAC Chip

    Know the secret to your pristine audio.


    This headphone or gear reveals the secret sauce behind superior audio quality, highlighting the presence of a high-performance DAC chip for pristine sound reproduction.


    If you see products marked as “⚙️ DAC Chip”, expect to experience your music with unparalleled clarity, detail, and fidelity, ensuring that every note and nuance is faithfully reproduced for your listening pleasure.

  • Power Output

    When you need that juice to get the best out of your products.


    This headphone or gear packs a punch, revealing the product's impressive power output capabilities, ensuring it can handle even the most demanding products with ease.


    If you see products marked as “🚀 Power Output”, you're in for a treat with robust performance for driving high-fidelity products without breaking a sweat.

TO BE RESTOCKED BY July

Pre-order
Headphone-Zone-iFi-Audio-iDSD-Diablo-2Headphone-Zone-iFi-Audio-iDSD-Diablo-2
iFi Audio - iDSD Diablo 2 Portable DAC & Amplifier Sale price₹ 119,999 Regular price₹ 129,999
  • Premium Economy

    Sensible spending meets sophisticated quality in perfect harmony 💫.


    I tend to describe premium economy products as finding that sweet spot where exceptional value meets refined performance. Think of it like business class comfort at economy prices - you're getting significantly more than what you paid for. These headphones deliver a refined listening experience that rivals more expensive alternatives, making them an intelligent choice for discerning listeners who appreciate both value and excellence.


    This thoughtfully curated selection demonstrates our commitment to bringing you outstanding sound quality and robust construction without requiring a significant financial investment. Each product has been meticulously evaluated to ensure it delivers performance characteristics typically associated with higher price brackets.


    When you see "💎 Premium Economy" products, expect refined audio experiences that bridge the gap between entry-level and high-end offerings, delivering impressive clarity and features at accessible price points.
  • Balanced Output

    Upgrading from single-ended to balanced can be the easiest way to improve your sound.


    This DAC, Amp or Hi-Res player offers a balanced output, ensuring pristine audio quality with minimised interference and enhanced clarity for your listening pleasure.


    If you see a product marked as "⚖️ Balanced Output”, get ready for a symphony of crystal-clear tunes, free from any unwanted noise drama!

  • Use Wirelessly with Bluetooth

    Enjoy the convenience of seamless wireless connectivity


    This headphone or gear indicates that the product supports wireless connectivity via Bluetooth, freeing you from the tangles of cords and cables.


    If you see products marked as “✂️ Use Wirelessly with Bluetooth”, enjoy the freedom to stream music, make calls, and more, all without being tethered to your device, giving you the flexibility to move around and multitask with ease.

  • DAC Chip

    Know the secret to your pristine audio.


    This headphone or gear reveals the secret sauce behind superior audio quality, highlighting the presence of a high-performance DAC chip for pristine sound reproduction.


    If you see products marked as “⚙️ DAC Chip”, expect to experience your music with unparalleled clarity, detail, and fidelity, ensuring that every note and nuance is faithfully reproduced for your listening pleasure.

  • Power Output

    When you need that juice to get the best out of your products.


    This headphone or gear packs a punch, revealing the product's impressive power output capabilities, ensuring it can handle even the most demanding products with ease.


    If you see products marked as “🚀 Power Output”, you're in for a treat with robust performance for driving high-fidelity products without breaking a sweat.

Pre-order
Headphone-Zone-ONIX-Mystic-XP1Headphone-Zone-ONIX-Mystic-XP1
ONIX - Mystic XP1 Portable DAC & Amp Sale price₹ 129,990 Regular price₹ 149,999
  • Premium Economy

    Sensible spending meets sophisticated quality in perfect harmony 💫.


    I tend to describe premium economy products as finding that sweet spot where exceptional value meets refined performance. Think of it like business class comfort at economy prices - you're getting significantly more than what you paid for. These headphones deliver a refined listening experience that rivals more expensive alternatives, making them an intelligent choice for discerning listeners who appreciate both value and excellence.


    This thoughtfully curated selection demonstrates our commitment to bringing you outstanding sound quality and robust construction without requiring a significant financial investment. Each product has been meticulously evaluated to ensure it delivers performance characteristics typically associated with higher price brackets.


    When you see "💎 Premium Economy" products, expect refined audio experiences that bridge the gap between entry-level and high-end offerings, delivering impressive clarity and features at accessible price points.
  • Balanced Output

    Upgrading from single-ended to balanced can be the easiest way to improve your sound.


    This DAC, Amp or Hi-Res player offers a balanced output, ensuring pristine audio quality with minimised interference and enhanced clarity for your listening pleasure.


    If you see a product marked as "⚖️ Balanced Output”, get ready for a symphony of crystal-clear tunes, free from any unwanted noise drama!

  • Use Wirelessly with Bluetooth

    Enjoy the convenience of seamless wireless connectivity


    This headphone or gear indicates that the product supports wireless connectivity via Bluetooth, freeing you from the tangles of cords and cables.


    If you see products marked as “✂️ Use Wirelessly with Bluetooth”, enjoy the freedom to stream music, make calls, and more, all without being tethered to your device, giving you the flexibility to move around and multitask with ease.

  • Battery Life

    No need to be connected to the power socket with these devices.


    This headphone or gear promises long-lasting battery performance, ensuring your device keeps up with your adventures without missing a beat.


    If you see products marked as “⏳ Battery Life”, be rest assured that you'll enjoy extended usage time, whether it's for uninterrupted music playback, extended gaming sessions, or all-day productivity, keeping you powered up throughout your day.

  • DAC Chip

    Know the secret to your pristine audio.


    This headphone or gear reveals the secret sauce behind superior audio quality, highlighting the presence of a high-performance DAC chip for pristine sound reproduction.


    If you see products marked as “⚙️ DAC Chip”, expect to experience your music with unparalleled clarity, detail, and fidelity, ensuring that every note and nuance is faithfully reproduced for your listening pleasure.

  • Power Output

    When you need that juice to get the best out of your products.


    This headphone or gear packs a punch, revealing the product's impressive power output capabilities, ensuring it can handle even the most demanding products with ease.


    If you see products marked as “🚀 Power Output”, you're in for a treat with robust performance for driving high-fidelity products without breaking a sweat.

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