GPA-100 : Unbelievably functional piece of gear

Tired of carrying 30kg amps to the gigs and replacing their tubes again and again, I decided to go digital with my rig. Now, all types of guitar amps are under my feet, however I still want to drive my Marshall stack to hear it. Decided to try this inexpensive toy more as an experiment rather than final solution. And guess what - it stays with me for few years now. It is so convenient it fits to my helix bag pocket along with the wires. The 100W written on the box ain't a joke. In most cases I crank it half way to drive my 1960A. Volume at 3 o'clock makes an sound terror on a stage. :) Pros: Big volume knob, EQ on board, intuitive in/out (as in guitar pedal effect), no external power supply, just regular cord. Lighter than feather, strong as a tank, cheap as dirt, loud and undistorted sound. Cons: ummm.... Came back to buy one spare, just in case.