GX 5 : An excellent amp.

This amp offers excellent performance at a reasonable price. The sound quality is first class and it's well made. The fan does create some noise but this would only be an issue in a very quiet room where you probably wouldn't need the PA anyway. I have never found this to be a problem and the fan noise is insignificant once the venue fills up and the band gets going. It's not the lightest of amps but not the heaviest either. One in a flight case is liftable on your own. I wouldn't recommend two together unless they are on wheels. I have been using these amps for a number of years and they have been very reliable. They are also not that deep so plenty of space in the back of the rack. They have a multitude of connections on the back which will cope with all eventualities.