I've gigged quite a bit with just the combo alone and then recently added the 121H extension cab. Mostly weddings and small jazz fusion type gigs. The extension cab really helps get the sound up closer to your ear but the combo alone sounds great. Plenty of low end and good volume. No problem keeping up with a full drum kit. At reasonable volumes it can handle a low B fairly well too. I used to have the mini CMD 12 combo which I liked, but the bass response and compression horn on the 121H sound superior to my ear. I guess my only complaint and a minor one is the sort of flimsy rubber handle on top of the combo. I would have preferred the bar handles on the side