Is the Marshall AVT150 a tube amp? Because I've been reading in different places saying it is or it's not.
No. It's a hybrid. It only has one valve in it - the rest of the amp is solid state.
Pre-amp: one tube
Poweramp: solid state
Quote by scottishmob

This is a site for musicians and you're all crying about the sad state of rock? Fuck that. I'm going to practice more and take over radio. I advise you all to do the same.
its valve state, and stay away from it, its a decent amp at low volumes and once u turn it up to 5 it goes to mud alot better amps out there for the price
My Gear:

Gibson Lp
ibson Sg
Fender Strat
Taylor 914

Mesa Boogie Dual Caliber
Mesa Boogie 4x12 w V30's
Marshall Avt 150

Wylde Wah
boss Ds-1
Boss Ch-1
Danelectro delay
the clean channel is alright on it, i find the other channels unusable though