What mlsstl describe is an attempt to get a good "gain structure" or gain staging .
Sources can have to high output level and most likely both amps and preamps can have to much gain . If your always use the bottom half of you volume control your system has to much gain somewhere . And subsequently you amplify input noise and stuff , probably at every stage , at the preamp and then the power amp . This board amp TPA3116 ? Does it have any built in gain adaption ? If not you can build your own L-pads ( a couple of resistors per channel ) or buy passive attenuators to put on the rca inputs to lower the gain by -10dB for example ? Then you can happily use the Touchs own volume . Fixed attenuators or L-pads can be built with very good precision compared to a potentiometer , as it just a bunch of low power resistor it cost peanuts to buy very hig precision ones . ( OT , best case would be if the stuff had actuall gain adjustment or proper gain to begin with , attenuation solve a large chunk of the problem , but amps still amplify itsp's self generated noise at its own input , there is not only SN-ratio stuff have absolute noise levels to ) -------------------------------------------------------------------- Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3 sub. Bedroom/Office: Boom Kitchen: Touch + powered Fostex PM0.4 Misc use: Radio (with battery) iPad1 with iPengHD & SqueezePad (spares Touch, SB3, reciever ,controller ) server HP proliant micro server N36L with ClearOS Linux http://people.xiph.org/~xiphmont/demo/neil-young.html ------------------------------------------------------------------------ Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=105611 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
