Quote:
Originally Posted by DragonSarc
question what does the preamp tube do? i kinda figured that (like the jcm 900 has 3 preamp tube) is it 1 for clean which is V1 and 2 is for the OD on V2 and the 3rd is the phase inverter which balance the pre amps or all the preamp tube works on both clean and OD?  |
All the tubes are working at the same time regardless of what channel you're on. With your 900 the V1 and V2 would mostly affect your gain and tone. The phase inverter drives the current into your poweramp section. When you order tubes for your phase inverter make sure you order one with balanced triodes. The other 2 don't need to be balanced.