I recently updated my stage amp to this and I love it. small enough to carry around, but loud enough for full band shows. It’s a tube amp, Has a really nice clean sound as well as nice, but simple sound options. The 4 is the new one, but you can get the older versions cheaper, or get the 4 second hand. I think mine is a 3, second hand, and it was a couple hundred quid. Really reliable and great amp.