Desert Amplifier Repair is proud to offer service for all OEM Trainwreck Circuits amplifiers.
Mesa Boogie Mark III head from the 1980’s. These Amplifiers are renowned for being incredible studio amplifiers.
Changing the stock fixed bias, found in many amplifiers, to an adjustable fixed bias has several potential benefits.
The early versions of the JCM2000 were prone to an issue that has been coined the “bias drift” issue. It’s been discussed at length on countless fan forums and since around mid-2004 the issue was resolved in manufacturing by Marshall.
Desert Amplifier Repair Specializes in Ampeg V4 Service and Restoration, with dozens of V series amplifiers having been on the bench.