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Old 21st October 2013
  #3
Lives for gear
 
NeoHippy's Avatar
 

hey,

its true. Amps usually work best when they are driven near their max value.
If you turn down the volume on the macbook you will reduce the SNR. Since the signal is still in the digital domain. That means your dynamic is much less. In other words the noisefloor will be much closer to your peak signal. Thats not good. Best thing to do would be to hook up an analog monitor/level controller between soundcard/macbook and amp.
But usually good controller are quite expensive.
I have a passive monitoring system and I drive the soundcard on max outout and turn down the amp. Thats the way it sounds best in my situation.

cheers