Cayin RU6 USB DAC Headphone Amplifier

Product Information

Unfortunately, Cayin can’t afford to use the same high precision resistors, so they went down one step and adopted high precision low TCR Thin Film Resistors rated at ±0. The superb performance of the Cayin RU6 makes it an easy recommendation to anyone who is looking for a dongle with R2R capabilities. On the RU6, this led to a degradation of sound quality since the R-2R DAC is very demanding on the incoming data integrity – with digital mobile phone volume control resulting in lower sound quality.

When off-the-shelf volume options cannot meet the high precision, low noise, low power consumption requirements of RU6, Cayin developed their own discrete resistor array volume control.

However, they often ended up being too clean sounding that they lacked musicality and some even lacking realism altogether. The initial listen was just a tad harsh and bright in the upper midrange, while the low end was warm and thick, with a smooth and relaxed treble. Otherwise from quality perspective I found both to be quite satisfying, there are times I want to have solid crispness and solid imaging and the 4. With warmer or bassier IEMs, the RU6's charm is not as balanced, and with things like the CCA CRA, I find it too bottom heavy. Just like my previous DAPs of N6ii E02 and N3 Pro, black theme with glass faceplate implemented here to cement the signature look of Cayin.

So, when you are adjusting the volume and hear a very brief audio pause as you cross every 10 steps, this is normal and intended by design. The RU6 is plug'n play compatible with all USB-OTG devices (iOS and Android), Mac OS, Windows PC through the available driver and it can also be connected to Digital audio players that support USB out.With NOS mode, you get the unadulterated input signal while in OS mode, the digital audio bridge up samples digital audio data to 384kHz using digital filters. I have never imagined either stepped volume control as well as R-2R to be made possible on a USB-powered dongle design, not even a DAP.

This can happen between tracks if the bitrate changes, or switching volume quickly, or at every 10th volume step (i.

It seems this is not an uncommon issue for even the most highly regarded portable DACs including the Chord Mojo, so not really a fault, just a mismatch.