I've been expanding my effects pedals and using AC adapters. This was fine, but each time I went to play I had to disconnect everthing, reconnect, find a AC outlet, then break it down and set it back up again. This was the best option and was On Sale. Going rechargeable with a case is the best. Just unplug my Input cable and Output cable. Place in case, which has extra room for cables and stuff, plus a front storage pouch and I'm gone. This was the perfect size for 4 pedals. I've charged it once and used several 2-hour practices and charge light is still good!.