Sedond, I did contact them and the update for the preamp sounds ok. They remove the FET's from the circuit. Brant mentioned that he does not have parts for the photentiometer and did not mention a new one. He said that I would be better off updating the MAT-180 then the Maestro. He said I should just jumper out the balance and get a stepped volume control, but this eliminates my remote, that I love.