Stolen Trademark Amplifier from Jim's Audio on EBAY

At last. Enough for convection cooling. Works well, full bias. Modified with to ekstra output transistors on each half period. Twelve on each channel. Added ekstra driver for each pair. Biased to 0.4 A on each transistor = 2.4 A. The heat transfer to the heatsink improved dramatically with 2mm aluminium oxide insulators plus thermal paste on both sides. The transistors conduct much more evenly. Measure almost the same voltage over each emitter resistor. Way better than the Silpads.
 

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For driving a pair of DIY Apogee Sign. like speakers it is exactly what I have been searching for. It has the power and control for driving low efficiency speakers. Using it for only driving the bass panel.
 

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