Cayin - C9ii

Portable Headphone Amplifier

Sale price₹ 219,999 Regular priceMRP: ₹ 259,999
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DELIVERY

1. What is a Pre-Order product?
A Pre-order product is a product that we especially order for you from the brand. Once you place an order with us, we will order it from the brand for you.

2. How do I know when the product will be delivered?
There is a rough timeline on the product availability and once it has been confirmed with the brand, we will inform you.

3. Do you order the product from the brand as soon as I place the order?
We do not immediately order the product but add it in the upcoming order.

4. Will you be giving me updates?
Once we have ordered the product and have a confirmed timeline, we will give you an update.

5. I’d like to make changes to/cancel my order?
You can only cancel/make changes to your order until we place the order with the brand. Since the product is specifically being ordered for you, we will be unable to cancel/make changes once we order the product from the brand.

Free Shipping
7 Day Replacement Guarantee

In case you receive the Cayin - C9ii 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)

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Warranty & Services

Don't sweat it, this Cayin - C9ii 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

I Am Worth It

For the most passionate audiophiles who demand nothing less than audio perfection 💎, these exceptional products represent the absolute pinnacle of sound reproduction technology. When I designate something in this category, it means we've identified something truly extraordinary - a piece of equipment that transcends conventional standards of excellence. Think of these as the Rolls-Royce of audio - masterpieces that don't simply meet expectations but establish entirely new benchmarks for what's possible.


These aren't just premium products; they're timeless investments in musical excellence whose value transcends ordinary performance metrics. Each represents a fundamental redefinition of what's achievable in sound reproduction, incorporating innovations and craftsmanship that justify their exclusive status.


When you see "👑 I Am Worth It" products, understand that you're experiencing audio perfection - these masterpieces cater to those who recognise that true excellence knows no compromise.

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.

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.

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.

Built like a Tank

Durability concerns? Rest assured 💪.


I tend to describe these products as audio equipment that's built to survive anything you can throw at them. These headphones incorporate high-grade metal components and reinforced design elements that ensure they can handle demanding conditions while maintaining structural integrity. Think of them as the military-grade vehicles of the audio world - over-engineered for reliability and built to last decades, not just years.


The metal construction provides exceptional strength and longevity while contributing to a premium feel that serious audio enthusiasts appreciate. Whether you're a professional who needs reliable daily-use equipment or someone who values long-term investment in audio gear 🏗️.


When you encounter "🪖 Built like a Tank" products, expect unmatched robustness and durability you can count on for years of intensive use.


Why it Sounds Amazing

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.

Cayin Introduces The C9ii- An Extraordinary Portable Headphone Amplifier

Cayin presents the high-quality portable headphone amplifier redefining the audio reproduction, the C9ii. At its core lies the Gen5 Nutube 6P1 vacuum tube, delivering a warm, tube-like sound with enhanced efficiency and durability. This fully symmetric headphone amplifier features multi-stage amplification circuits for unmatched performance and compatibility with a wide range of IEMs and headphones. With five distinctive timbre settings, dual amp modes, and precision volume control, the C9ii offers exceptional sound-shaping flexibility for audiophiles. A direct battery power supply ensures excellent transient response and advanced thermal management maintains optimal performance. Combining robust design, premium materials and meticulous attention to detail, the C9ii offers unparalleled audio excellence.

Features Gen5 Nutube 6P1 Vacuum Tube For Exceptional Audio Performance

Cayin C9ii features the KORG Nutube 6P1, a compact and energy-efficient double DHT vacuum tube developed in 2015. Leveraging Vacuum Fluorescent Display (VFD) technology, the Nutube delivers warm, tube-like sound while maintaining a slim design and long lifespan. Despite its low heat and power consumption, the Nutube's sensitivity to microphonics posed challenges for portability. Cayin addressed this with a custom-engineered Suspended Installation System featuring silicon housing, shock absorption, and a flexible circuit board, minimizing microphonics and enhancing performance for the portable headphone amplifier.

Equipped With Vacuum Tube Circuit With Fully Discrete JFET Buffering For Refined Sound

Cayin C9ii features a Gen5 Nutube 6P1 vacuum tube circuit combined with discrete JFET buffering and a high-performance constant current source. Its three-stage low-gain timbre circuit uses Nutube 6P1 tubes as low-gain voltage amplifiers for warm, tube-like sound.

Stage 1 employs Toshiba 2SK209 JFETs for load driving.
Stage 2 uses Nutube pairs for balanced voltage amplification.
Stage 3 integrates additional JFETs for enhanced current driving.

Users can switch between high and low anode voltages to adjust sound linearity and harmonic distortion. The dual tube timbre design offers "Modern" and "Classic" options, while a discrete solid-state timbre circuit ensures versatile and refined sound shaping.

Houses Adjustable Anode & Tube Timbre With Dual Amp Modes For Tailored Sound

Cayin C9ii offers exceptional sound customisation with adjustable anode voltage, dual tube timbre, and versatile dual amp modes. Users can fine-tune sound linearity and harmonic distortion with high and low anode voltage settings, while the dual tube timbre design provides distinct Modern and Classic options to suit various musical preferences. The amp modes include Class A for warm, smooth playback, Class AB for efficiency and dynamic range, and Hyper mode for maximum audio output and enhanced soundstage. Its three-stage Nutube circuit, featuring Nutube 6P1 tubes and 16 Toshiba 2SK209 JFETs, ensures steady current delivery and outstanding sound quality.

Utilises Three Different Tube Timbre Circuit For A Customised Music Listening Experience

Cayin C9ii offers three distinct timbre circuits: a classic tube timbre with independent local feedback and no large-loop NFB, resulting in higher harmonic distortion and a warm, rich sound reminiscent of traditional tube amplifiers. The modern tube timbre uses large-loop NFB across multiple stages for lower THD, delivering a cleaner, modern tube sound with reduced noise. Lastly, the solid-state timbre employs a single-ended Class A design for smooth, natural, and fatigue-free audio output.

Experience Five Different Sound Profiles With Five Distinctive Timbre Settings

Cayin C9ii offers versatile audio shaping through its Nutube 6P1, allowing fine-tuning of even-order harmonics with adjustable plate voltages. In tube mode, switching between two plate voltage settings (High and Low) provides distinct tonal profiles, complemented by a solid-state option for five timbre settings: 

Tube (Classic) Anode (H) : Rich, emotional sound ideal for vocals.
Tube (Classic) Anode (L) : warmer and thicker tones.
Tube (Modern) Anode (H) : light, sweet tube sound.
Tube (Modern) Anode (L) : minimal coloration and clean accuracy.
Solid State : Balanced and natural tone. 

The Negative Feedback (NFB) feature adds further customization with Local Feedback (ON) for richer harmonics and warmer bass, or Large-loop Feedback (OFF) for enhanced dynamics and spatiality. With dual input modes (Line Input or Pre-Amp Input), three amplification modes (Class A, Class AB, Hyper), and three timbre options, the C9ii offers unmatched flexibility to craft a sound profile for any genre or listening preference.

Features Gen5 Nutube 6P1 Vacuum Tube For Exceptional Audio Performance

Cayin C9ii features the KORG Nutube 6P1, a compact and energy-efficient double DHT vacuum tube developed in 2015. Leveraging Vacuum Fluorescent Display (VFD) technology, the Nutube delivers warm, tube-like sound while maintaining a slim design and long lifespan. Despite its low heat and power consumption, the Nutube's sensitivity to microphonics posed challenges for portability. Cayin addressed this with a custom-engineered Suspended Installation System featuring silicon housing, shock absorption, and a flexible circuit board, minimizing microphonics and enhancing performance for the portable headphone amplifier.

Equipped With Vacuum Tube Circuit With Fully Discrete JFET Buffering For Refined Sound

Cayin C9ii features a Gen5 Nutube 6P1 vacuum tube circuit combined with discrete JFET buffering and a high-performance constant current source. Its three-stage low-gain timbre circuit uses Nutube 6P1 tubes as low-gain voltage amplifiers for warm, tube-like sound.

Stage 1 employs Toshiba 2SK209 JFETs for load driving.
Stage 2 uses Nutube pairs for balanced voltage amplification.
Stage 3 integrates additional JFETs for enhanced current driving.

Users can switch between high and low anode voltages to adjust sound linearity and harmonic distortion. The dual tube timbre design offers "Modern" and "Classic" options, while a discrete solid-state timbre circuit ensures versatile and refined sound shaping.

Houses Adjustable Anode & Tube Timbre With Dual Amp Modes For Tailored Sound

Cayin C9ii offers exceptional sound customisation with adjustable anode voltage, dual tube timbre, and versatile dual amp modes. Users can fine-tune sound linearity and harmonic distortion with high and low anode voltage settings, while the dual tube timbre design provides distinct Modern and Classic options to suit various musical preferences. The amp modes include Class A for warm, smooth playback, Class AB for efficiency and dynamic range, and Hyper mode for maximum audio output and enhanced soundstage. Its three-stage Nutube circuit, featuring Nutube 6P1 tubes and 16 Toshiba 2SK209 JFETs, ensures steady current delivery and outstanding sound quality.

Utilises Three Different Tube Timbre Circuit For A Customised Music Listening Experience

Cayin C9ii offers three distinct timbre circuits: a classic tube timbre with independent local feedback and no large-loop NFB, resulting in higher harmonic distortion and a warm, rich sound reminiscent of traditional tube amplifiers. The modern tube timbre uses large-loop NFB across multiple stages for lower THD, delivering a cleaner, modern tube sound with reduced noise. Lastly, the solid-state timbre employs a single-ended Class A design for smooth, natural, and fatigue-free audio output.

Experience Five Different Sound Profiles With Five Distinctive Timbre Settings

Cayin C9ii offers versatile audio shaping through its Nutube 6P1, allowing fine-tuning of even-order harmonics with adjustable plate voltages. In tube mode, switching between two plate voltage settings (High and Low) provides distinct tonal profiles, complemented by a solid-state option for five timbre settings: 

Tube (Classic) Anode (H) : Rich, emotional sound ideal for vocals.
Tube (Classic) Anode (L) : warmer and thicker tones.
Tube (Modern) Anode (H) : light, sweet tube sound.
Tube (Modern) Anode (L) : minimal coloration and clean accuracy.
Solid State : Balanced and natural tone. 

The Negative Feedback (NFB) feature adds further customization with Local Feedback (ON) for richer harmonics and warmer bass, or Large-loop Feedback (OFF) for enhanced dynamics and spatiality. With dual input modes (Line Input or Pre-Amp Input), three amplification modes (Class A, Class AB, Hyper), and three timbre options, the C9ii offers unmatched flexibility to craft a sound profile for any genre or listening preference.

A Fully Symmetric Headphone Amplifier With Multi-Stage Amplification For High Performance

Cayin C9ii is a fully symmetric headphone amplifier with a four-channel differential circuit, enhancing performance, signal coherence, noise reduction, stereo imaging, and symmetry. It features a Symmetric JFET Differential Input Amplifier with eight ultra-low-noise JFETs (LSK489 and LSJ689) for consistent performance. The Symmetric BJT Push-Pull Differential Voltage Amplifier, using Toshiba audio-grade PNP transistors, ensures stable operation and optimal harmonic distribution. The final Symmetric BJT Push-Pull Parallel Current Amplifier employs high-power Nexperia bipolar transistors, offering excellent thermal stability, superior current handling, and improved load-driving capacity for compatibility with various headphones and IEMs.

Features JRC MUSES Series 2 For High-Precision Volume Control & Premium Quality Internal Wiring

Cayin C9ii features high-precision volume control using JRC MUSES72320V 2-channel analogue chips with 131 steps, ensuring optimal balance and low distortion in a fully differential circuit. The resistance-ladder design ensures excellent channel synchronization and minimal noise. Volume adjustments are electronically controlled, with an ALPS potentiometer used for physical sampling, offering precise control even at low levels. The amplifier includes a two-stage gain control (High/Low) for compatibility with various IEMs and headphones. For premium connectivity, the upgraded CS-44C4411 balanced cable features shielded OCC Litz conductors and twisted OFC wire, enhancing clarity, imaging, and reducing noise.

Powered By Direct Battery Power Supply With Replaceable Battery Design For Impressive Power Supply

Cayin C9ii is powered by four Samsung 35E 3400mAh 18650 batteries, providing a direct ±8.4V supply to the amplification circuit, eliminating the need for DC/DC regulation. This design ensures excellent transient current delivery for superior audio performance. Premium components, such as WIMA film capacitors, C0G-type MLCCs, Panasonic POSCAPs, and OS-CON capacitors, create a low-resistance, fast-responding power supply with enhanced noise filtering. The Samsung 35E batteries, known for high energy density and low internal resistance, improve headroom and transient response. The modular, tool-free battery tray features quick-release latches, self-locking mechanisms, and a secure SATA interface, also functioning as a standalone charger. The replaceable battery design allows users to experiment with different 18650 batteries to fine-tune sound quality.

Provides Effective Heat Dissipation With an Advanced Thermal Management System

Cayin C9ii features a thermal management system with high-conductivity graphite pads and CNC-machined heat sinks for efficient heat dissipation. The chassis, made from 6063-T6 aluminium alloy, offers excellent thermal conductivity (~200 W/m·K) and improved strength due to T6 heat treatment. The increased width (from 160mm to 165mm) allows for additional heat sinks on the side panels, ensuring even temperature distribution and minimizing heat-related performance issues for consistent operation.

Industrial Design With Exquisite Details & Dual Input/Output Options

Cayin C9ii is meticulously crafted with a high-precision CNC-machined chassis for an industrial design and exquisite metallic feel. The sides feature an elegant curved design with enhanced grip comfort while significantly increasing heat dissipation. It equips 4 LED battery indicators that display the battery capacity and the LED flashes as charging indicators when connected to a USB charger. It features mini handles on each side to protect the toggle switches from accidental bumps or damage. It embeds 2 display windows for Nutube VFD, while the iconic gold ring on the potentiometer of the C9 series features CNC mirror polishing and PVD gold plating techniques. C9ii features input and output options of 4.4mm Balanced and 3.5mm Single-ended. Single-ended input will convert to a Balanced audio signal internally to take full advantage of the high-current balanced headphone amplifier.

A Fully Symmetric Headphone Amplifier With Multi-Stage Amplification For High Performance

Cayin C9ii is a fully symmetric headphone amplifier with a four-channel differential circuit, enhancing performance, signal coherence, noise reduction, stereo imaging, and symmetry. It features a Symmetric JFET Differential Input Amplifier with eight ultra-low-noise JFETs (LSK489 and LSJ689) for consistent performance. The Symmetric BJT Push-Pull Differential Voltage Amplifier, using Toshiba audio-grade PNP transistors, ensures stable operation and optimal harmonic distribution. The final Symmetric BJT Push-Pull Parallel Current Amplifier employs high-power Nexperia bipolar transistors, offering excellent thermal stability, superior current handling, and improved load-driving capacity for compatibility with various headphones and IEMs.

Features JRC MUSES Series 2 For High-Precision Volume Control & Premium Quality Internal Wiring

Cayin C9ii features high-precision volume control using JRC MUSES72320V 2-channel analogue chips with 131 steps, ensuring optimal balance and low distortion in a fully differential circuit. The resistance-ladder design ensures excellent channel synchronization and minimal noise. Volume adjustments are electronically controlled, with an ALPS potentiometer used for physical sampling, offering precise control even at low levels. The amplifier includes a two-stage gain control (High/Low) for compatibility with various IEMs and headphones. For premium connectivity, the upgraded CS-44C4411 balanced cable features shielded OCC Litz conductors and twisted OFC wire, enhancing clarity, imaging, and reducing noise.

Powered By Direct Battery Power Supply With Replaceable Battery Design For Impressive Power Supply

Cayin C9ii is powered by four Samsung 35E 3400mAh 18650 batteries, providing a direct ±8.4V supply to the amplification circuit, eliminating the need for DC/DC regulation. This design ensures excellent transient current delivery for superior audio performance. Premium components, such as WIMA film capacitors, C0G-type MLCCs, Panasonic POSCAPs, and OS-CON capacitors, create a low-resistance, fast-responding power supply with enhanced noise filtering. The Samsung 35E batteries, known for high energy density and low internal resistance, improve headroom and transient response. The modular, tool-free battery tray features quick-release latches, self-locking mechanisms, and a secure SATA interface, also functioning as a standalone charger. The replaceable battery design allows users to experiment with different 18650 batteries to fine-tune sound quality.

Provides Effective Heat Dissipation With an Advanced Thermal Management System

Cayin C9ii features a thermal management system with high-conductivity graphite pads and CNC-machined heat sinks for efficient heat dissipation. The chassis, made from 6063-T6 aluminium alloy, offers excellent thermal conductivity (~200 W/m·K) and improved strength due to T6 heat treatment. The increased width (from 160mm to 165mm) allows for additional heat sinks on the side panels, ensuring even temperature distribution and minimizing heat-related performance issues for consistent operation.

Industrial Design With Exquisite Details & Dual Input/Output Options

Cayin C9ii is meticulously crafted with a high-precision CNC-machined chassis for an industrial design and exquisite metallic feel. The sides feature an elegant curved design with enhanced grip comfort while significantly increasing heat dissipation. It equips 4 LED battery indicators that display the battery capacity and the LED flashes as charging indicators when connected to a USB charger. It features mini handles on each side to protect the toggle switches from accidental bumps or damage. It embeds 2 display windows for Nutube VFD, while the iconic gold ring on the potentiometer of the C9 series features CNC mirror polishing and PVD gold plating techniques. C9ii features input and output options of 4.4mm Balanced and 3.5mm Single-ended. Single-ended input will convert to a Balanced audio signal internally to take full advantage of the high-current balanced headphone amplifier.

Dual Headphone Output

Cayin C9ii features dual headphone output options featuring 4.4mm Balanced and 3.5mm Single-ended to connect with various devices.

Dual Input Option

Cayin C9ii to pair with various audiophile grade devices, it features 4.4mm Balanced and 3.5mm Single-ended input ports.

Pre-In & NFB Selector

Cayin C9ii features a Pre-In and negative feedback selector and indicator for a customised music listening experience.

Accessories to Get you Started

1. C9ii Battery Module (Mounted on the device)
2. CS-35C35II Single-Ended Interconnect Cable
3. CS-44C44II Balanced Interconnect Cable
4. Samsung INR18650-35E Batteries x4
5. Hi-Res Stickers
6. Type-C Cable
7. User Manual


All You Need To Know About The Cayin C9ii

Headphone Output
3.5mm TRS (Single-Ended)
4.4mm TRRRS (Balanced)
Input
3.5mm TRS (Single-Ended)
4.4mm TRRRS (Balanced)
Timbre Circuit
Tube: KORG Nutube 6P1 x2
Solid State: Toshiba 2SK209 JFET x4
Battery
Battery: Samsung INR18650-35E (3400mAh) x4
Battery Duration:
Timbre: Solid State
Mode: Class AB
3.5mm (Single-Ended): ~17.5 Hours
4.4mm (Balanced): ~13.5 Hours

Mode: Class A
3.5mm (Single-Ended): ~15 Hours
4.4mm (Balanced): ~10.5 Hours

Mode: Hyper
3.5mm (Single-Ended): ~14.7 Hours
4.4mm (Balanced): ~10.2 Hours

Timbre: Vacuum Tube (Modern)
Mode: Class AB
3.5mm (Single-Ended): ~12.5 Hours
4.4mm (Balanced): ~9.5 Hours

Mode: Class A
3.5mm (Single-Ended): ~11.5 Hours
4.4mm (Balanced): ~8.2 Hours

Mode: Hyper
3.5mm (Single-Ended): ~11.2 Hours
4.4mm (Balanced): ~8 Hours

Charging:
Condition: Standard Charger (5V-2A)
Time: ~6.5 Hours
Condition: Quick Charge QC3.0/PD2.0 (9V2A)
Time: ~3.8 Hours
Power 3.5mm (Single-Ended)
Setting: Tube/Solid State
Parameter:
16 Ohms: 1200 mW
32 Ohms: 700mW
150 Ohms: 160mW
300 Ohms: 80mW
Frequency Response:
Tube: 20Hz-80kHz(±0.5dB)
Solid State: 11Hz-80kHz(±0.5dB)
Test Condition: High/Low Gain
Power 4.4mm (Balanced)
Setting: Tube/Solid State
Parameter:
16 Ohms: 4100mW
32 Ohms: 2600mW
150 Ohms: 640mW
300 Ohms: 320mW
Frequency Response:
Tube: 20Hz-80kHz(±0.5dB)
Solid State: 11Hz-80kHz(±0.5dB)
Test Condition: High/Low Gain


1 Year Warranty

Don't sweat it, this Cayin - C9ii 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
The Cayin C9ii is a showcase of advanced engineering, blending cutting-edge components and meticulous design to deliver a highly customizable and versatile portable amplifier. The C9ii combines flexibility, power, and performance
C9ii offers more than C9, making it a valuable investment. DAPs come and go, but a portable amp like C9ii should last you a long time to enhance any source you pair it up with.

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 Amp & DAC
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 C9ii Dual Nutube Portable Headphone Amplifier
C9ii Battery Module (Mounted on the device)
CS-35C35II Single-Ended Interconnect Cable
CS-44C44II Balanced Interconnect Cable
Samsung INR18650-35E Batteries x4
Hi-Res Stickers
Type-C Cable
User Manual


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