I use a SKB
1SKB-SC192U soft case for my power amp. It has space above and below. I did take two spare rubber feet cut them and wedge them above and below the amp just as a precaution so the racks didn't have to support all the weight of the amp.
Both flaps open completely and the front has velcro to keep the flap out of the way while it's open. Big front pocket, strap handles and shoulder strap. I think it ran around $75
