This is a very rare 1970s Acoustic 270. Frank Zappa used this model during his heyday. It features tremolo, fuzz, and reverb, making it a unique guitar amp for Acoustic. This is a hard-to-find piece in Japan. A must-see for enthusiasts. There are operational issues; there's a lot of noise, and it takes a while for the output to stabilize. The sound itself isn't very strong, and it might be difficult to use in its current state, but it could be greatly improved with an overhaul. There are scratches, stains, and damage. Sold as-is, as junk.