can you alter the gain of an amplifier?


I never use active preamps and prefer sources with built-in volume controls over passive preamps when possible.  I've had great success using cd players by Consonance, Theta, & OPPO directly in my amp(s) but find that sometimes, even with the volume full up, the sound level is just not loud enough.  With my big, solid state amps, I know I'm not out of power, just not enough gain (this was particularly problematic with an Aleph clone).  I was wondering if it's possible/feasible to alter the gain of an amp to achieve better results using a passive volume control or the on-board volume control in the source?  I won't be doing the work myself.  I just want to know if a decent repair/mod shop could make the alterations.  Thanks!
lcherepkai

Showing 1 response by douglas_schroeder

Well... you have made decisions which, imo, make it more difficult to achieve superior sound. By insisting upon using volume control in sources, i.e. CDP, you are locking yourself out of potentially far superior systems. You may have had success in using CDP as source and preamp function, but I found in many iterations with very fine CDP's that one can obtain far better sound by doing two things; use the CDP as transport and get an outboard DAC, and use a passive or active preamp with it. You are in no way assured to have superior sound simply because you are using the volume control of the CDP and the CDP's DAC. 

You may lose a touch of the most extreme refinement/cleanness going this route, but you will have an overall far higher end result in terms of most other parameters of fine playback. Trying to futz with amps is not a good solution, imo, and you will still have a largely compromised (not fully realized) system.  :)