Very solid.
I have been using the Cub to do restaurant gigs and whatever small gigs the Cub can handle for over 3 years now. I play on an acoustic Gypsy Jazz guitar. It is solid, reliable and sounds as good as an acoustic amp can possibly get. I recently bought the Super Cub because the small guy just wasn't big enough. The Super Cub is exactly like its name. A Super Cub. It is a bad $@!#% amp. The amp is worth every penny. Good Job guys!