This is a 1x12 combo version of the GTS-C head and also uses the same circuit found in the GTS 200w head with the addition of a dual independent channel EQs, and is scaled down to lower power offerings customizable from 20w to 100w in a 1x 12 semi-open back cabinet. The amp is the perfect grab and go solution for studio sessions, bed room jamming, or apartments and condos and you spare no sacrifice in tone due to size as it utilized the same exact circuit as the full size version. This is achieved by repositioning the circuit layout in a deeper but narrow chassis and eliminating all the typical excess wiring and transformer space with Extra precaution taken to prevent any noise caused from proximity. The GTS-C is however slightly heavier than a typical 1x12 tube combo but is has a huge heavy tone that will make you question everything you know about the size and power of amps you have experienced prior.