Originally Posted by Dougr33
I've finally saved up for, and got a great price on a used DAC1 USB. I'm LOVING it! I'm using it to directly drive my NAD C275bee amp and psb Image T6 speakers, as well as AKG K702 phones.
Maybe these questions have been answered directly, but I've not found them, so hope you don't mind!
- Most of my music are flac files thru J. Rivers Media Center. I removed the HPA jumper so it goes full bore, which allows me to get a nice level on the 702s while using Replay Gain (I bounce around a lot while listening, so this is invaluable to me). But I'm curious: it outputs 24 bits to the DAC1, using Wasabi event mode(so volume controlled by the dac after the replay gain adjustment, of course). Am I losing much sound quality using the replay gain? (it sounds great, but I can't tell a difference with it off.. hard to measure because of course the volume level is hard to match for a/b tests).
- Is there any way I can get use out of the AES input? I'm using the usb for the computer, spdif for a cd deck, and toslink for the tv. Are there adapters that would allow another spdif coax input, or are voltages/resistance too different?
Thanks for your time sir!!
Just to address your question here, I'll paste Rory's reply from the Benchmark forum:
1. We have not tested the Replay Gain feature of J River, but based on its handling of the signal (64bit), I'm not surprised that you cannot hear a difference between on/off. What does happen is that the noise floor will come up by the gain reduction amount of the program, but its affect sonically will be inaudible at even the most extreme listening levels.
2. The AES input on the DAC1USB and DAC1 will accept a 75 ohm coaxial cable by the addition of an Impedance Transformer. There are a few companies that offer these. We sell one manufactured by Canare. It can be found here:
Simply plug it into the DAC's rear XLR digital input, and connect the coax cable from the source. A cable with a BNC connector on one end will be required: