IC-based power amps Maplin "50W HiFi"
 

On 1 Oct, 20:07, Dave Osborne wrote:

I recently came across this (it's been around for ten years, but passed
me by):

http://en.wikipedia.org/wiki/Gainclone

Says it all really. HiFi as a concept is pretty dead for me. Almost
everything audio sounds 'good enough' these days (if used in an
appropriate context, natch).

There's a very interesting design in 'Elektor' magazine this month,
for a power amplifier using lots of op-amps in parallel, by Douglas
Self. Seems a very good idea, I haven't heard of it before, with
advantages including no heatsinks and their asociated assembly
difficulties, because the dissipation is divided among the chips, 32
of them in this case, fully protected against short circuits, due to
the self-protecting nature of each op-amp, amplifiers can be
paralleled to work into a lower load impedance, as each op-amp has a 1-
ohm resistor at it's output, these are all effectively in parallel to
give a very low source impedance.