Henriksen Amps are top shelf Jazz Amps that incorporate 5 infinitely adjustable frequency bands on the amp control panel which allows a jazz guitarist to dial out troublesome frequencies and tailor their sound to exactly what they are looking for. Add a "Tweety" (tweeter speaker) and you add frequency range and turn the Henriksen into a fine acoustic amp. Henriksens are also available as a separate head unit only. If you are a Jazz guitarist, look into Henriksen amps...you won't be sorry.