The Amp Garage

It's not a 240 vac amp. It is a 110-117 volt amp. Don't let the 3 prong cord fool ya'! That cord was made to plug into a system not a wall socket. It can easily be rewired to a standard U.S. 3 conductor cord and work just fine. I know as I have about 8 Maas-Rowe carrilon amps of different wattages a...

MOV on the AC are to protect transients on the AC. The diodes on the tubes are to protect from transient spikes due to the inductance collapsing on the output tranny, usually occurs at high power output and hard attack I believe.