I bought this amp as part of a set, which included the B-550 5 string bass guitar. The bass was fine, but I expected that because it was the third HB bass I bought and every bass arrived in pretty good shape. The amp, however, was and is a horrible experience. First off, Thomann neglected to use decent packing material. That resulted in an amp that arrived pretty badly beaten up. The box at least. After unpacking, it turned out the amp wouldn't turn on. I have been in contact with customer support and they offered to replace it, free of charge. As it turned out, a fuse had come undone during transport. Luckily the fuse was still rolling around in the box so that problem was sorted rather quickly. The real problem, however, is the DI output that does not work. Frankly, that was the only true selling point for me, so basically the amp is just sitting there, collecting dust. As much as I like the HB instruments, my experience with their equipment is far from ideal and I will most definitely not recommend this amp to anyone.