Always. 2 transistor get hot, 2 remain cold all the time.
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Show posts MenuQuote) "Tame" your Randall by soldering a 15K resistor from the left pin of R45 to the right one of R46.
Left and right as seen on the schematic, on the actual board they might point anywhere.
QuoteIf it clips your powered mixer, probably the direct out pot isn't working properly.
QuoteOnly way you can operate them as preamps, is to unhook the PSU for poweramp, so the only thing working in the circuit is the preamp, and you hook it to mesa or whatever via effect send jack.