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Cayin RU6 USB DAC & Headphone AmpInput: USB (B or C)DAC: HiFi R2R resistor ladderOutput: Balanced or unbalanced headphonesSpecs: See FigureCayin RU6 R2R DAC, portable dongle DAC with balanced 4.4mm amp output. RU6 uses the sought after R2R Resistor Ladder DAC design - known for its natural tone, it is new in this price range and in a micro sized portable product. We like that the RU6 has a volume control custom designed by Cayin for a compact r2r application - 99 volume levels, thanks to sets of resistors and micro relays, will provide total control of the volume to match with any high sensitivity earphone and a noise free, black background.This DAC is in as-new condition with original box, manual, cable, adapter, etc. It has very low use and is for sale simply because I rarely listen to music on my phone these days...LINKSProduct Pagehttps://en.cayin.cn/features/7/124/488.htmlSALE SITEShttps://audio46.com/products/cayin-ru6-portable-usb-dac-head-amp-donglehttps://headphonebar.com/products/cayin-ru6-r2r-dacREVIEWShttps://www.ear-fidelity.com/cayin-ru6/Cayin RU6, the best DAC of 2021 at Ear Fidelity. Well, this title wasn’t granted by accident, and we’re sure of it. This is the cheapest R-2R DAC, with a fantastic soundstage, very good technical capabilities, and a lovely timbre. It’s may not be for everybody, especially as it’s changing the sound signature drastically, so if you own several pairs of IEMs, all of them will be somewhat brought together in terms of tonality. However, it is a lovely, R2R-ish type of tonality, so there’s much to love.Definitely recommended.https://headfonics.com/cayin-ru6-review/The Cayin RU6 offers a different “analog” approach in the world of highly integrated delta-sigma chipset packages and DSP filters. One that preserves a tube-like musical quality but with much finer volume control and packed within a favorable form factor.I have never imagined an R-2R dongle could come alive let alone offer oversampling features and step volume features on USB-powered devices. It gives the system a lot of flexibility and modern technicalities yet still delivers a distinctly natural sound with a lot of character.CAYIN RU6 SPECIFICATIONSDAC: 24bit Discrete R-2ROutput: 5mm + 4.4mm BalancedDisplay: 0.96? 128×64 OLEDDigital Decoding: PCM: 44.1kHz~384kHzDSD: DSD64/128/256Dimension: 65mm x 25.4mm x 13.7mmChassis: CNC AluminumNet Weight: ~28g3.5MM HEADPHONE OUTPUT SPECSPower Rating 138mW@32ohmsResponse 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 0.5ohm4.4MM HEADPHONE OUTPUT SPECSPower Rating 213mW@32ohmsResponse 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 1ohmhttps://www.headfonia.com/cayin-ru6-review/The Cayin RU6 DAC/AMP dongle has a very musical, natural and analogue like presentation. That combined with the strengths of the R2R technology, makes it a very interesting dongle for a lot of headphiles.The RU6 is a full bodied and smoother sounding DAC/AMP, where the bass and more forward vocals have prominent roll. The RU6 is easy on the ears and it always has great clarity and a pitch black background. The volume control is one of the very best we have experienced with all of the dongles so far. The RU6 requires high quality cables to achieve its best sound and performance (the included cable is not bad).
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