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Cayin

Cayin - RU7

Portable Discrete 1-Bit DAC & Amp
Sale price₹ 26,999 Regular priceMRP: ₹ 28,999
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Variant: Cayin - RU7
DELIVERY
Ships in 2-3 days
7 Day Replacement Guarantee

In case you receive the Cayin - RU7 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 - RU7 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.

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Chi-Fi
Excellence

1 Year of
Warranty

Ideal for Audiophiles

These DAC & Amps are designed for discerning music lovers. If audio quality is important to you, a set of DAC & Amps like these would be ideal.


You can expect these DAC & Amps to present you with a refined listening experience. The audio quality exhibited by these DAC & Amps is a beautiful mix of musicality, technical brilliance and high precision.


These DAC & Amps deliver a spacious & open soundstage that makes you feel you are sitting at a live concert. Experience the magic and delve into pure sonic tranquility!
Ideal for Commuting

If you’re someone who enjoys listening to music while commuting. These portable Amps & DACs allow you to listen to your favourite track without compromising on the audio quality
Best Suited for Portable Use

For those who value them, being able to carry their favourite DAC & Amp equipment when they are on the move is invaluable.


These DAC & Amps offer the ultimate portability experience without sacrificing sound quality. If you’re someone who appreciates cutting-edge engineering, quality sound and portability, then look no further.


Designed to be trusty companions, these DAC & Amps are cleverly engineered with the latest technology to offer the ultimate combination of portability & Hi-Fidelity!

4.4mm
Balanced Output

Discrete 1-Bit DSD
DAC

Pair with Laptop via USB

A majority of people use a laptop as the primary source device to listen to music or watch movies. Since the laptop is an essential part of the audio chain there are headphones and devices designed to work a laptop or computer system flawlessly. With the availability of USB connectivity, it becomes easier to pair various devices like an Amp, DAC or even headphones without worrying about drivers or any additional piece of software.

Upto 400mW @32Ω
Power Output

Connect With
USB-C

Metal
Build

Volume Controls

If your DAC & Amps include volume controls or volume rockers, you can easily change the volume with a button press or volume knob turn.


DAC & Amps that have volume controls make its operation incredibly simple; turn up the volume on your smartphone or your source devices and then change the volume on DAC & Amps to the desired level.


This design feature allows you to have complete control over the desired volume according to your listening preferences.

Sets a New Benchmark For an Ultra-Portable DAC & Amp

Cayin is committed to creating the best audio gear and distributing Hi-Fi products. Cayin's audio devices have distinct cultural overtones and fall within a broad pricing range. One such product that was well ahead of its time, the RU6, now gets an upgrade in the form of RU7. It is a USB-powered ultra-portable 1-Bit Resistive Ladder DAC and amplifier.

Discrete 1-Bit DAC With Fully Balanced Resistor Networks

Cayin designed a micro-miniaturized 1-Bit DAC circuit from discrete components to convert digital signal to analogue signal through a fully differentiated 4-ch DAC architecture. A resistor network composed of 128 pieces (4 x 32) of high-precision thin film resistors makes up the 1-Bit DAC circuit. Cayin's well-liked N7 Digital Audio Player has the same design architecture. After going through a 3-level active LPF, the resistor network's output will be changed to a single-ended signal for volume adjustment.

Discrete 1-Bit DAC With Fully Balanced Resistor Networks

Cayin designed a micro-miniaturized 1-Bit DAC circuit from discrete components to convert digital signal to analogue signal through a fully differentiated 4-ch DAC architecture. A resistor network composed of 128 pieces (4 x 32) of high-precision thin film resistors makes up the 1-Bit DAC circuit. Cayin's well-liked N7 Digital Audio Player has the same design architecture. After going through a 3-level active LPF, the resistor network's output will be changed to a single-ended signal for volume adjustment.

High Precision Signal Enhancement

It has excellent digital audio capabilities with user-selectable All-to-DSD available with the Cayin RU7. It supports native DSD from DSD64 to DSD256 (Direct Stream Digital) and PCM (Pulse Code Modulation) up to 384kHz. Its Audio Bridge will receive various audio formats and undergo highly accurate signal amplification. Before being fed to the discrete 1-Bit DAC circuit, all-digital audio signals are converted to the specified DSD format (DSD64, DSD128 or DSD256).

High Power Dual Parallel Amplifiers

Cayin has designed the amplification circuitry with dual amplifiers in parallel, providing 4-CH high power Balanced driven output. The second phone amplifier is a parallel unity gain inverting phase amplifier. You get an impressive upgrade in phone output power with 3.5mm SE, 160mW @32 Ohms, 4.4mm BAL, 400mW @32 Ohms.

Shared Line-Out Functionality

The shared line-out function will configure the 3.5mm or 4.4mm phone output into fixed voltage output (bypassing volume control): 3.5mm SE, 160mW @32 Ohms, 4.4mm BAL, 400mW @32 Ohms. The line out voltage is carefully selected to retain as much detail and dynamic of the 1-Bit DAC with minimum noise and distortion. This functionality enables you to connect the RU7 to a portable/desktop amplifier or home audio system and use it as a miniature 1-Bit DAC.

Discrete Volume Control For Precise Adjustment

Discrete Resistor Network DAC circuit is very demanding on incoming data integrity Cayin recommends keeping the digital volume of mobile phones at maximum output to safeguard the quality of the digital audio signal. Cayin has developed its discrete resistor network volume control with 100 steps volume control. This design is done through 3 segments of resistors and switching relays, offering precise control over a volume range, satisfying even the need of the most sensitive IEM users. The segment ranges from Segment 1: 1-49, Segment 2: 50-79, and Segment 3: 80-100.

Dual 6-Layer PCBs Minimise Interference

RU7's circuitry is split into dual 6-layer PCB, with digital and analogue circuits installed in separate boards to minimise interference. This design architecture safeguards signal integrity, making sure the noise from the reference clock and DSP will not bleed into the amplification circuit.

Compatible with Common Platforms & Devices

A discrete resistor network is a low-power DAC circuit when compared to other highly integrated DAC chipsets, minimises power drain from a mobile source. Redesigned amplification circuit increases output power dramatically while maintaining the overall power drain at 100-110mA. Low power consumption allows RU7 to be compatible with the following digital audio sources: Android-based mobile devices, iOS and iPad OS mobile devices, macOS computers, Windows 7/8/8.1/10 computers, and Digital Audio Players with USB Audio output.

OLED Screen Display & Hardware Volume Controls

All surfaces are smoothly curved to enhance the look and feel of the RU7. The small and lighter chamfering is done for better handling. The 128*64 pixel OLED screen displays playback information with good visibility displaying all relevant information. The hardware volume button conveniently controls volume and acts as a menu selection button when entering the mode setting.

High Precision Signal Enhancement

It has excellent digital audio capabilities with user-selectable All-to-DSD available with the Cayin RU7. It supports native DSD from DSD64 to DSD256 (Direct Stream Digital) and PCM (Pulse Code Modulation) up to 384kHz. Its Audio Bridge will receive various audio formats and undergo highly accurate signal amplification. Before being fed to the discrete 1-Bit DAC circuit, all-digital audio signals are converted to the specified DSD format (DSD64, DSD128 or DSD256).

High Power Dual Parallel Amplifiers

Cayin has designed the amplification circuitry with dual amplifiers in parallel, providing 4-CH high power Balanced driven output. The second phone amplifier is a parallel unity gain inverting phase amplifier. You get an impressive upgrade in phone output power with 3.5mm SE, 160mW @32 Ohms, 4.4mm BAL, 400mW @32 Ohms.

Shared Line-Out Functionality

The shared line-out function will configure the 3.5mm or 4.4mm phone output into fixed voltage output (bypassing volume control): 3.5mm SE, 160mW @32 Ohms, 4.4mm BAL, 400mW @32 Ohms. The line out voltage is carefully selected to retain as much detail and dynamic of the 1-Bit DAC with minimum noise and distortion. This functionality enables you to connect the RU7 to a portable/desktop amplifier or home audio system and use it as a miniature 1-Bit DAC.

Discrete Volume Control For Precise Adjustment

Discrete Resistor Network DAC circuit is very demanding on incoming data integrity Cayin recommends keeping the digital volume of mobile phones at maximum output to safeguard the quality of the digital audio signal. Cayin has developed its discrete resistor network volume control with 100 steps volume control. This design is done through 3 segments of resistors and switching relays, offering precise control over a volume range, satisfying even the need of the most sensitive IEM users. The segment ranges from Segment 1: 1-49, Segment 2: 50-79, and Segment 3: 80-100.

Dual 6-Layer PCBs Minimise Interference

RU7's circuitry is split into dual 6-layer PCB, with digital and analogue circuits installed in separate boards to minimise interference. This design architecture safeguards signal integrity, making sure the noise from the reference clock and DSP will not bleed into the amplification circuit.

Compatible with Common Platforms & Devices

A discrete resistor network is a low-power DAC circuit when compared to other highly integrated DAC chipsets, minimises power drain from a mobile source. Redesigned amplification circuit increases output power dramatically while maintaining the overall power drain at 100-110mA. Low power consumption allows RU7 to be compatible with the following digital audio sources: Android-based mobile devices, iOS and iPad OS mobile devices, macOS computers, Windows 7/8/8.1/10 computers, and Digital Audio Players with USB Audio output.

OLED Screen Display & Hardware Volume Controls

All surfaces are smoothly curved to enhance the look and feel of the RU7. The small and lighter chamfering is done for better handling. The 128*64 pixel OLED screen displays playback information with good visibility displaying all relevant information. The hardware volume button conveniently controls volume and acts as a menu selection button when entering the mode setting.

Bespoke Protective Case

The RU7 comes with a handmade magnetic leather case made of soft leather. A tight-fitting protective cutout specifically made for RU7 provides an elegant presentation. Additionally, two spherical metal plates with adhesive tape pads are included in the package.

Type-C cable

This high-quality cable can be used to connect it to your mobile devices. It is made of high-purity materials enabling lossless signal transmission.

USB-A to C adapter

This adapter allows you to use the included Type-C cable to connect to your PCs and other sources.
Discrete 1-Bit DAC architecture is typically found on heavy-duty setups. RU7 packs all these in a compact form factor and has seen improvements when compared to its predecessor, the RU6. It's an incredible DAC if you are someone who prefers pure analogue sound.

RAGHAV SOMANI

Founder, Headphone Zone

HFN Recommended
Headfonia
July, 2023

The additional balanced output power, the technical capability, and several All-To-DSD modes are just some of the key features that elevate and differentiate the RU7 from its peers and the competition. 
The Cayin RU7 has a tuning which is more to the neutral side, but with its full body and powerful, controlled bass impact, it is a very musical and engaging DAC/AMP dongle. Cayin has certainly set the bar very high.
With a smooth, rich and musical tonality, RU7 is also the most versatile dongle I've used with the selection of high-end IEMs in my collection. Highly recommended.
With these additional features, extra power, and excellent sound quality, a dongle like RU7 can be a real competitor to most of the entry level and some mid-fi level DAPs.
Having listened to at least 40 with a wide range of IEMs and headphones over the past 4 years, the Cayin RU7 makes a very strong case for itself and especially at its asking price.
Cayin’s RU7 continues the company’s hot streak of breaking new ground in DAC design for the dongle format, the all-new 1-bit DAC in the RU7 is even more impressive than the R2R DAC in its predecessor.

All You Need To Know About The Cayin RU7

DAC

Fully Balanced Resistor Networks
Discrete 1-Bit DSD DAC

Phone Out
Line Out

3.5mm Single-Ended (Shared)
4.4mm Balanced (Shared)

USB

Type C: USB Audio Input

Digital Decoding

In: PCM 44.1kHz ~ 384kHz
DSD64/128/256
Native

Display

0.96 inch 128x64 OLED



1 Year Warranty

Don't sweat it, this Cayin - RU7 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.

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: 10am-6:30pm.Average answer time: 2-3 Hours
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Customer Reviews

Based on 15 reviews
87%
(13)
0%
(0)
7%
(1)
7%
(1)
0%
(0)
b
bhaumik modi (Ahmedabad)
RU7 - a different direction in a good way

Cayin RU6 vs RU7 - Tale of the Two cities. (not an upgrade completely different)
RU6 r2r
-Warmer sound & less details with deep Soundstage
-Relaxed sound paired with Maestro Mini (can listen for hours)
-Better for iems only
-Electronic & Bollywood music, Synth Sounds, Lower Paced music
-https://music.apple.com/.../drop-that.../pl.u-G21zt8kEemd
RU7 1Bit
-Punchier bass, SLAM, more treble energy & air with better seperation of instruments crisper tonality to crave for.
-Converts all to DSD
-Took away midbass focus from Xe6 immediately & made it clean sounding
-Powerful enough to drive mid range headphones easily
- Rock, Metal & Drum focused music where slam & speed is required to enjoy.
-https://music.apple.com/in/playlist/d-d-rum/pl.u-oW6lT0Ay6Kp
-https://music.apple.com/in/playlist/dope/pl.u-ok61I0Ay6Kp

User picture User picture

Thanks a lot for your detailed and genuine feedback, we'll share your thoughts with the brand as well. It'll also help our fellow customers to make the right choice!

P
Pavan kumar (Hyderabad)
Great organic tonality and the soundstage plus the superb LO implementation

On its own, it has a terrific tonality with a wide soundstage and precise imaging. Much more resolving and clear than the RU6. Tonality is mostly the same. Technicalities are better than RU6. Now, coming to the most impressive part is the Line-out feature. I paired with the source (Tempotec V6 - Bit perfect) and Topping NX7 Amp and there is no looking back. Brilliant soundstage with great directional accuracy and paired with Aful Performer 8, it's musical bliss. P8 has an intimate/immersive soundstage which has widened with this pairing. I highly recommend RU7 just for the LO. Rest is a bonus.

User picture

We are glad you had a comfortable shopping experience with us and it is delightful to read such positive reviews on your product! Cheers!

S
Shivam (Delhi)
Great instrument seperation

I was using fiio ka3 before and compare to that the ru7 sounds more natural and soundstage got little bigger, not a huge difference but the huge difference is in how ru7 seperate micro details from rest of the music.
I'm using moondrop variations with ru7 and compare to fiio ka3, the sound is smoother but still more detailed and the seperation in music is so good with ru7 and bass also got little more withh more midbass as well.
More musical than fiio ka3 with bigger soundstage, more details and most importantly great instrument seperation.

Thanks a lot for your detailed and genuine feedback, we're glad that you have such positive thoughts about the product and we'll share your thoughts with the brand as well. It'll also help our fellow customers to make the right choice!

S
Subin (Pune)
Addictive little dac !!!

Pairs very well with monarch mk 2. Gives it the additional warmth which is slightly lacking in the bass slam. Also goes well with hexa. It does have problem sometimes playing on all to dsd128,256 mode on apple devices depending on the lightning cable but its an apple issue...given in the manual too due to power consumption restriction on lightning ports. No playback issues on android. Its an addictive dac/amp...can go on for long sessions.

User picture

Hey Subin, thanks a lot for this lovely review and we are glad you are enjoying it! Keep the music playing.

J
Joston Fernandes (Mumbai)
Unbeatable dongle for an unbeatable price……

I was planning to buy the Cayin N7 after auditioning as it sounded exceptional with every iem I had. But after reading great online reviews about the Cayin RU7 I just bought it to give it a try.
I could not believe my ears when I just started using it…….This is an absolute gem…… It is so close to the Cayin C7 which I used for a few days for auditioning and which comes in at a fraction of the price. It has power for every iem out there and can even drive my HE1000se and ZMF auteur quite well…….
I have tried several dongles before but nothing comes close to Cayin RU7……
Very Natural sounding with excellent detail retrieval and with wide soundstage…..
I am using it with ie900 and FIR audio RN6 iems and they sound phenomenal……
This is my daily dongle which is connected to A&K SR25 DAP which makes it very small to carry around on the go....
Thank you Headphone Zone for great service and prompt delivery

User picture

Hey Joston, thank you so much for the amazing feedback! It means a lot to us. We are so happy to hear that you are loving our products and services.

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