Sound Digital SD12KD any help appreciated

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Good day to every electronics enthusiasts! Got this amp in for repairs with a numerous blown transistors all over the place:) The main issue i have are the output transistors and driver IC`s since numbers are brushed off and no idea what are they. Tried searching online with no luck:/ Sound Digital itself was as ignorant and rude as it can possibly be, could not believe it... If anyone has any info on them PLEASE share it?? Thanks in advance.

Please see photos attached...

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Can any of the Mosfets be used for outputs in this amp Since they are defaced ? High Rail voltage is +189V @12V

IRFB4332PBF or IXFP80N25X3

Also, does anyone know where to source those smaller IR4427s That are used in this amp. The smallest I have used in other amps are IR4427STRPBF but this amp uses a much smaller package. Any help would be very much appreciated.
 
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