I'm using a Mac Mini (USB). I don't think my ears are bad! I could try another computer to see if there is something different with the Mac Mini. The volume was more than adequate (too loud) with the high gain board.

Quote: Originally Posted by meusickfrek I also noticed that the volume increases evenly throughout it's range. It has enough juice to drive the HD580s, but the high gain version was definitely louder. After I get used to the low gain V I will go back to the high gain V to see if I...

Do you think the reduced gain will drive high impedance headphones? The "high" gain version is working with my HD650's, but as others have mentioned the volume control is not linear (past 12 o'clock).

My tracking number works - Package Progress Location Date Local Time Description CHEK LAP KOK, HK 03/04/2008 8:10 P.M. DEPARTURE SCAN 03/04/2008 6:58 P.M. HUB SCAN SHENZHEN, CN 03/04/2008 3:38 P.M. DEPARTURE SCAN 03/04/2008 11:01 A.M. ORIGIN SCAN CN 03/04/2008 6:11 A.M. BILLING...

I paid on 2/16, but didn't get an email