haha..i think here only nuforce and HeadphoneAddict knows what chip they used
post #91 of 1841
12/13/09 at 12:41am
Thats exactly what I thought. A passive volume control is at zero gain at full volume. Its just like a volume attenuator (like you get with many headphones on their cables), not an active preamp volume control.
Maybe Larry didn't set his to full volume so that he could get matching outputs with other dacs he was comparing with like the pico. After all, at full volume the udac will sound louder than most other usb powered dacs because of its 2 volt output.
Right, it doesn't need to be at max to match the Pico DAC-only line out levels, and the uDAC volume knob can go even lower to match the EF2's DAC when I was comparing DACs.
And, with the EF5 amp having a little bit of channel imbalance at very low volumes I can get the amp's volume knob up higher and out of the problem area by turning the uDAC down a little. I used to do the same kind of thing with the volume knob on my apogee mini-DAC. I've even been known to turn an amp up to 3-4 o'clock and control the volume of my amps entirely by using the Apogee mini-DAC's volume. The uDAC allows me to do the same thing.