Gibson GB440, in the family line of Acoustic, AMP, and Thunderfunk. This one is #176 of those David Funk made after he bought Gibson out. If you like a Thunderfunk but can't afford the price, this amp is for you! It's punchy, loud, and versatile. Same basic design as the Tfunks. David took this design and improved it. Selling to pay for what? My new TFB550-B. $425 + shipping to CONUS.