Originally Posted by vk6kro
There are high powered audio amplifier chips that are really high powered opamps.
One I found on a quick search was this one:
http://www.national.com/mpf/LM/LM3876.html#Parametrics
It has a Gain bandwidth of 8 MHz and it can deliver 56 watts into 8 ohms. This is 21 volts RMS or about 60 volts peak to peak.
It uses a power supply of plus and minus 35 volts.
Futurlec have them for $6. You would need a heatsink.
But that is just an example. There seems to be heaps of such chips out there.
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Thanks that is great. I will check the slew rate and the frequency of operation.
