I went ahead and bought the marshall av50 head. it sounds pretty cool. I like it alot tone wise. It sounds kind of bad though because i am playing it through my 4 ohm avatar bass 4x10 cab because thats the only cab i have. I tried turning it up to see how loud it gets. it gets pretty loud but theres no head room for what I need. My question is, would my amp be noticable louder if I used to through a full sized 4 ohm guitar cab ?(marshall makes those 3/4 size 4x12's but they are kind of small) I have to keep it as cheap as possible because my job gives me very few hours and i have car insurance. would i be good with just one 4 ohm 4x12, or should I save up for 2 cheap 4x12 cabs and go full stack for shows? that seems kind of outragouse, but im thinking that because my amp doesnt seem to quite me loud enough going through my bass 4x10 cab, but that might be the problem. thanks and sorry for my bad grammer skills.