Hi Some time ago I remember seeing some pics of mini tube amps - I mean about the size of a paperback novel. Anyone rememebr what make they were as I am considering something like that for my new PC set-up. Obviously not for serious listening but just for messsing around with the PC. Do they sound half decent or are they just a gimmick? Also looking for cheap second hand Alesis M1 Active Mk 2s as an alternative.