krzys Wrote: > Aren't the active buffer or gain stages used to match or better match > impedances of the source/cable/amplifier combo ? And this better match > doesn't it have a diffect influence on the sound ? > Chris
It is true that too low an input impedance will present a hard load to a source possibly causing it to distort, but not all passives have the same problems with impedances. While an active preamp will present a nice easy input impedance to the source compared to a low ohm pot which presents a heavy load, those aren't the only options. TVCs present a varying impedance to the source based on the amount of attenuation. Once a reasonable amount of attenuation is present a TVC is actually a pretty easy load. I'm sure if I turned the knob all the way up it'd be a hard load, but even with inefficent maggies that is way too loud with 400watts ;-). I usually listen with mid 20s attenuation. If I'm not loading my source too hard and have all the gain I need (UCD400 modules need 2v for full gain and the DAC1 provides 2v) why would I want to use an active? Check out the reviews of the Bent and Django units and you won't find many people missing their actives. -- samplesj Jeremy '2 Channel system' (http://www.audiocircle.com/circles/member_systems.php?sysid=619) / 'HT system' (http://www.audiocircle.com/circles/member_systems.php?sysid=620) / 'Den' (http://www.audiocircle.com/circles/member_systems.php?sysid=636) ------------------------------------------------------------------------ samplesj's Profile: http://forums.slimdevices.com/member.php?userid=3342 View this thread: http://forums.slimdevices.com/showthread.php?t=25614 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
