I have a G-K 1001RB and an Acme B-2 and I can get the perfect sound I was looking for out of it. I planned on adding a second B-2 in later so I could use the head to a more full potential, but it looks like I might have to upgrade sooner than I had planned. It's just not as loud as I had expected it to be, its great for just practicing by myself, not too bad for band practice, but as far as playing out it's really not enough to fill a decent sized room. I'm pretty sure a couple of others have this same set up, or something like it, and I'm looking for a way to increase my volume while I wait until I have enough money to upgrade again. Also I've been considering either getting the second B-2 because it really is a good cab, just not quite strong enough on its own, OR getting a nice 15in to put under the B-2 I already got....any opinions?