This Morgan PR12 is one of two prototypes that were built for Josh Smith to use on his Grammy Awards performance with Mick Jagger in 2011. There are a few videos on YouTube of the two amps being played together. This is an impressive little amp! I have a few small complaints about the design, but they are mostly preferences, so I will keep them to myself. Overall, I have liked every Morgan amp I’ve worked on, and this is no exception.