philcrack

this is a customizable bass mid and high level control with optional pre-amp with jumper up to +4 db at the signal way with the Motorola 33079. A very good preamp. All Sound change components are removed in the signal away everything runs through. I use a very good epcos for the bass adjustment and a very fine old ERO for the tips. here the circuit board.

Hi, i am currently testing with a reduced voltage on the power supply and a little bit more bias. That´s really good. Thanks Kevin! this is my test table: