What makes different amps produce different sound?


I think many of us know and undertand how various components in a 2-channel or HT system have an effect on sound output. While I understand the undr the hood workings of pre-amps, sources, and speakers, I know very little about amps. Obviously, there's more to amps then type (tube vs. SS) and power ouput.

I've done a web search for a good resource on amplifiers but haven't come across anything of value. Anyone know of a site that describes the theory behind amp design and its various components? Also, since there is a degree of subjectivity that accompanies amp performance, what aspects of your amp of choice contribute most to its performance?

Jeff
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Showing 1 response by pmwoodward

Hi Jeff,

One design in particular, negative feedback has a rather substantial effect on sound... way back, adding massive amounts of negative feedback was a popular way to woo a consumer by drastically reducing THD or Total Harmonic Distortion... In reality, anything below 1% THD is considered (by most) to be inaudible... negative feedback seems to greatly reduce the 3D soundstage abilities of an amp... other features such as high current can sound different based on the power consumption needs of a particular pair of speakers...