dmp
Well-known member
The BA340 is used as an op-amp to drive the output. It is on a 24v power rail. If you fit / solder in a 990 it should work. You just need a DOA that is meant for 24v and has good drive capability.
FYI - you want heatsinks on the at least one of the BA340 transistors if your using that card (forgot which one). If you have it powered up, see which ones get really hot
FYI - you want heatsinks on the at least one of the BA340 transistors if your using that card (forgot which one). If you have it powered up, see which ones get really hot