Mesa Headcase for the Carbine family of amps, though I think it would work for M-Pulse 600 as well. BB750 fits in there also, but will stick out the back of the headcase by about 3/4 inch. Includes the Mesa cover. [DEL]I also have a Mesa Headcase for the Walkabout.[/DEL] Walkabout Case is Sold Both have the Mesa cover, both are in good shape. $125 + shipping for each. Pics of Carbine Headcase: Will post pics of the Walkabout Headcase soon (looks like the Carbine Headcase, but smaller in dimension).