how do power amps work?

[blackmesa]

like whats the deal with the "20/20" or "50/50" why are they written like that. sorry for the lack of knoladge. but yea whats the deal with those? Thanks!

Eddie

 

[t0aj15]

Quite simply the two amps you mentioned are stereo poweramps. The 20/20 has 20 watts per channel stereo, and the 50/50 is selectable between either 15 or 50 watts per channel. They are only poweramps and still need a preamp to drive them.

 

[Nick_cor]

simply put as - preamp = the thing you plug your guitar into to get your tone, then preamp into the poweramp. the poweramp serves one purpose - to amplify the preamp level because it's a really low signal and can't be heard ( think of it as a "master volume " on the amp ) and the preamp is are the EQ and gain settings ) also note that, the poweramp has a distinct tone as well.. so that's why people prefer different poweramps. all these factors contribute to tone. now to answer your question about the name 20/20 , and 50/50 these are named because these mesa poweramps are in stereo.. meaning two distinct channels with distinct volume knobs. Most preamps are in stereo ...so you just send one channel to a cab and the other to another cab.. this is usefull for nice stereo effect processors.. hope that helps,