I just buy one. I compared it with a Yamaha P3500S, a Peavey PV1500 (FRRE twin of the Crest CPX 1500), an Inter M L1400. It has a better sound. None of these amps is transparent, but the Crown is the least bad, and that's why I chose it. It has a fan which is quite noisy, but if it is to make the sound was okay. The volume pots are Prominent, we have to pay attention during transport. This amp is now to be replaced by a new series that will work best under low impdance (according to the manufacturer) and will have a few more gadgets, we must recognize that the XLS 402 is quite dpouill then there must be a way to grab the latest copies cheap, for the fans!