Uncommon MB Electronics Model 2120MB Monster Amp== 6 X 7027 Output Tubes!

Description

Uncommon MB Electronics Model 2120MB Monster Amplifier. The amp uses six 7027 Output Tubes. I powered up the amp using a variable autoformer. It came up to power with no excessive current draw. The front meter indicated approximately 550-600 plate volts which is consistent with the schematic. There was also cathode current on every output tube though the switch contacts were a little dirty in switching each of the output tubes for measurement. I did not make any adjustments or attempt any further testing. The terminal switch on the back panel for the output signal is broken and should be replaced. High quality power supply uses two 5R4 rectifier tubes and is choke input. The amp includes a detailed Manual with operating and service instructions as well as a schematic.  All of the other tubes are included.  This will make someone a great high power, high quality amplifier. Amp is very heavy. Buyer pays 0 shipping in CONUS.