The ADA MP1 is a classic 1980's tube pre-amp. It has almost 100 presets that cover a wide range of sound from clean to high gain. The stereo chorus is amazing. You can dial in and save your own presets. The MC1 foot controller lets you instantly toggle between 9 patches - great for live performance. MP1's have a hardwired battery that maintains its presets, and it often fails with age. I had my unit professionally modified to use a standard lithium ion battery for backup and presets, so you will be good to go! Open to trades for music gear.