Spectral DMA 50 schematic

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I remember someone looking for a Spectral DMA 50 schematic. I have one from Nelson via a customer that couldn't get it fixed.
I generated a schematic from the board. It is pretty close I may have a part or a connection in the wrong place. This is just the front end.
A pretty nice amp with low noise and distortion in the working channel. It's bandwidth exceeds 200K the limits of my AP. A nice 100 Watt amp in a compact package.
The outputs are four Hitachi Mosfets per channel.
 

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