banzai Wrote: > > In both cases the SB3 is used as my volume attenuator so I can't run it > at max level while playing music. > This is bad. For a hifi setup you should use an attentuator or preamp, for safety reasons if nothing else. The problem is you are taking a DAC with a decent SNR, and then only using a *TINY* fraction of its range down close to the noise floor. I can not stress enough how detrimental this will be to the sound quality! > > However, the fact that the right-channel noise/interference level does > not seem to change when I raise or lower the volume while it's not > playing strikes me as odd. > Actually, that is the expected behavior. The noise floor does not change when you use digital attenuation. > > Can you locate my returned SB3 and give it a try? > I just did. :)
http://www.seanadams.com/1.gif http://www.seanadams.com/2.gif 1.gif is a full-scale sine wave, and 2.gif is the noise floor when nothing is playing (both plots are right-channel only). The peak you're hearing is at 8865 Hz and is at -120.70 dBr. The left channel is quieter, but still, 120dB down is very low **provided you have a reasonable signal level**. -- seanadams ------------------------------------------------------------------------ seanadams's Profile: http://forums.slimdevices.com/member.php?userid=3 View this thread: http://forums.slimdevices.com/showthread.php?t=24445 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
