Recent content by prog

How did you attach it to the case?

I also want to try some polypropylene caps, but I'm not sure how much noise those thin unshielded wires will pick, being so close to the power supply.

I have bad experience with the CM108 driver. While using it weird things used to happen with my DAC. After 5-10 minutes playback the music fully disappears and I get only crackling noise. Only restarting the playback makes it work again. No problems with the build-in xp driver so far.

Quote: Originally Posted by rbej Volume down in Foobar -3db and volume up +3db in amplifier=no clipping, great dynamics and details. =no clipping, less dynamics and detalis. You're amplifying also the noise from the DAC, this lowers the S/N ratio.

I/V and Ref resistors explained: diyAudio Forums - Non Oversampling DAC-complementing CD-PRO - Page 6

Well I'm not familiar with the I2S bus, but I suppose that CM108's output is too high for the TDA1543's.

You just need to lower the output in Foobar/Winamp, set the playback volume at -6dB and the distortion will stop.

The DAC chips' voltage on my Dec. 2008 Valab was 7.8V, I'm getting the 2009 this week (hopefully), but I think the chips' voltage remained unchanged. The 2009 edition seems to have more free space around the tantalum output caps, I will try to fit some 10uF Mundorf MCap or Audyn QS there.

Why don't you measure Valab's voltage first?

The byt52's are Vishay Fast Avalanche Sinterglass Diode, I would leave them on.

rbej, I will try this, but it won't solve the overheating problem, so I will have to change the supply voltage and the I/V and Vref resistors.

I just tested the Valab with TrueRTA and 1kHz sine wave: Something seems to be completely wrong with my unit.

Quote: Originally Posted by Bill Allen All this for $200 …. you have got to be @#$%+&* kidding me! If this doesn't work for you, it's not the Dac, it your crappy sounding system. Well, I tried the late Dec. 2008 version, and I don't like it that much. The DAC has now about 200...

Hi, I was wondering how the Valab DAC would perform compared to a high quality sound card (like ESI Juli@, M-Audio 192 or Emu 0404/1212) ? Can I use KS or asio4all with foobar and the Valab Dac via USB?