Peter,
There shouldn't be any unwanted hum unless the amp is poorly implemented.
These amps are also called "gainclones". The 47 Labs gain card amplifier started the use of these chips thus "gainclone." I think you'll find them on ebay or audiogon. Most are DIY projects.
Jim
There shouldn't be any unwanted hum unless the amp is poorly implemented.
These amps are also called "gainclones". The 47 Labs gain card amplifier started the use of these chips thus "gainclone." I think you'll find them on ebay or audiogon. Most are DIY projects.
Jim