W/D/W with the ability to combine outputs for the brootulz powa!!
The ability to turn off un-used channel/s when not needing them
Mix and Match any power tubes with auto-bias
Presence and Depth controls
Power scaling
Tube failure protection that will keep the amp going for the gig because tube failures will happen
Tube/SS rectos
Vintage/Modern switching
Spongy/Bold option for each channel
Proper cooling
Quiet
Circuit breakers instead of fuses (never have any when you need them)