Cayin – RU6

Chi-Fi Excellence 1 Year ofWarranty Ideal forAudiophiles Best Suited forPortable Use 4.4mmBalanced Output MetalBuild R-2R Resistor LadderDAC Chip Pair with Laptop via USB-C Connect WithUSB-C Upto 213mW @ 32ΩPower Output VolumeControls Super LightweightDesign A R2R DAC, is pretty much the buzzword of the year. Everyone wants one. But most are incredibly expensive, and need a big fat setup. The Cayin RU6 is set to change that. Pocket-sized, on the go, R2R goodness for everyone. RAGHAV SOMANI Headphone Guru About Raghav Somani Raghav Somani is the Founder & CEO of Headphone Zone. An avid audiophile and musician since 2008, his choice of headphones include STAX Electrostats, Audeze LCD 3, and for music on the go, the JH Audio Roxanne + Astell&Kern SP1000 is never too far away. On his playlist, you’ll find A.R. Rahman, Michael Jackson, and the Eagles. DESCRIPTION INNOVATIVE 24BIT DISCREET R-2R RESISTOR LADDER DAC CIRCUIT The Cayin RU6 features a self-developed 24bit discrete R-2R resistor ladder circuit that can decode up to 384kHz PCM audio. The basic idea of the R-2R ladder is a matched pair of resistors, the first is “R” and the other is “2R” which has twice the value of R. To achieve 24 bit decoding, RU6 equips 48 units of resistors (23 x R and 25 x 2R), and that’s for one channel. So for a stereo 24 Bit R-2R decoder, RU6 features 96 units of resistors for life-like audio reproduction. With the advent of the R-2R circuit, Cayin RU6 establishes itself as master of the fully-discrete resistor DAC topology in portable audio. OFFERING OVERSAMPLING AND NON-OVERSAMPLING DA MODES Cayin offers both Oversampling and Non-oversampling DA modes in RU6. For Oversampling mode, the Digital Audio Bridge will upsample the digital audio data to 384kHz through digital filters. This will enhance the resolution, reduce noise and improve the anti-aliasing of the digital signal. The Oversampling DA mode will offer a noticeable improvement on details and frequency extension. The playback is clean and sharp with a darker background. On the other hand, NOS DA mode maintains the sampling rate of the original bit-stream and playback will become very musical with a natural and organic presentation. EQUIPPED WITH FULLY ANALOGUE RESISTOR ARRAY VOLUME CONTROL Most USB DAC/Amps will rely on the volume control of your mobile phone to control the volume of the headphone output. Technically this was not a viable solution to Cayin RU6. Understanding this issue, Cayin developed a fully analogue resistor array volume control circuit that provides 99 steps volume control through 9 segments of resistors and switching relays. Resistor Array volume control features a very high-quality volume control design, extremely transparent when implemented correctly and it is found in a lot of high-end preamps and integrated amplifiers. FEATURING DUAL CIRCUIT BOARD LAYOUT FOR DSD AND PCM PLAYBACK To minimise audio signal interference, Cayin has split the RU6’s circuit into two 6-layers PCB, with digital and analogue circuits installed on separate boards. This safeguards the audio signal integrity and ensures the noise from the reference clock and DSP do not bleed into the amplification circuit. This architecture in turn delivers artefact free audio every single time. This circuit design combined with the R-2R architecture enables the RU6 to support hi-resolution PCM and DSD audio formats with support for 384kHZ PCM and DSD 64/128/256 natively. INTUITIVE AND VERSATILE OPERATION WITH LOW POWER CONSUMPTION Discreet R-2R circuitry is a low power DAC circuit when compared to other highly integrated DAC chipsets. This architecture minimises power drain from the mobile source allowing you to enjoy music without the need to worry about battery drain. USB-C connection offers compatibility with a wide range of phones, consumer electronics and computers. The hardware has been designed in an intuitive manner, where the volume buttons double as menu selectors and the OLED screen displays playback information accurately. The Cayin RU6 also offers two gain settings to enhance performance with various IEMs and headphones. All this is wrapped in a 28g package. SPECS PRODUCT INFORMATION DAC 24bit Discrete R-2R HEADPHONE 3.5mm + 4.4mm Balanced USB Type C USB Audio Input DISPLAY 0.96 inch 128×64 OLED DIGITAL DECODING PCM: 44.1kHz ~ 384kHzDSD: DSD64/128/256 CONTROL Volume +/-, Mode DIMENSION 65mm x 25.4mm x 13.7mm CHASSIS CNC Aluminum NET WEIGHT ~28g RU6 HEADPHONE OUTPUT (OS MODE)- 3.5MM POWER RATING 138mW @ 32Ω FREQUENCY RESPONSE 20Hz-20kHz (±0.5dB) THD+N 0.032% (1kHz, Output: 0.5V) DYNAMIC RANGE 109dB (20Hz-20kHz, A-Weighted) SNR 113dB (20HZ-20kHz, A-Weighted) OUTPUT IMPEDANCE 0.5Ω RU6 HEADPHONE OUTPUT (OS MODE)- 4.4MM POWER RATING 213mW @ 32Ω FREQUENCY RESPONSE 20Hz-20kHz (±0.5dB) THD+N 0.04% (1kHz, Output: 1V) DYNAMIC RANGE 110dB (20Hz-20kHz, A-Weighted) SNR 114dB (20HZ-20kHz, A-Weighted) OUTPUT IMPEDANCE 1.0Ω IN THE BOX BOX CONTENTS 1. Cayin RU6 2. USB C to C cable (shielded) 3. USB A to C adapter FAQs What is the warranty period on the Cayin RU6? The warranty period of the Cayin RU6 is of 1 year. In order to claim warranty, please visit our Cayin Warranty Page here. We are very helpful guys, just saying What all devices are compatible with Cayin RU6? The Cayin RU6 is compatible with devices with USB-C connection and can also be connected to PC and laptops with a USB-C to USB-A adapter included in the box. How is the overall build quality of the Cayin RU6? The Cayin RU6 comes with a sleek and robust design making it an ideal pick for portable use. Which DAC Chip does the Cayin RU6 come with? The Cayin RU6 is loaded with R-2R Resistor Ladder DAC chip that offers a best in class audiophile-grade sound quality. Do I need to charge the Cayin RU6? No, you don’t need to charge the Cayin RU6 just plug and play. Can I use the Cayin RU6 with my tab? Yes! You can easily connect the Cayin RU6 to your tab with USB C connection. Can I use the Cayin RU6 while traveling? The Cayin RU6 is lightweight and portable making them best while commuting. Does the Cayin RU6 come with a mic? No, the Cayin RU6 does not come with a microphone. Warranty & MEDIA REVIEWS 1 Year Warranty Don’t sweat it, this Cayin RU6 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. “At the RU6’s business end sit two headphone outputs: a 3.5mm single-ended socket and balanced 4.4mm Pentaconn socket. Switchable high/low gain assists with headphone/earphone matching.” Read More “The Cayin RU6 offers a different “analog” approach in the world of highly integrated delta-sigma chipset packages& DSP filters. Preserves a tube-like musical quality but with much finer volume control.” Read More “If you are in the market for a very high-end Dongle DAC that delivers a lot more than most — the Cayin RU6 is the one you want. It offers all the features most need, great sound, and good power.” Read More “RU-6 is the 2021 dongle for me, a dongle that will make premium brands sweat. RU-6 value is its naturalism of replay and presenting the flavor of R2R w/o dropping technicalities.” Read More