The AT108 is the guitar amp that puts vintage tone and character in a light, portable package. It's a beautiful-sounding amp for beginners in their bedrooms as well as seasoned performers who need a discreet sidekick for their next gig.ŒæAsk any guitarist what they want most from an amp and theyll answer with a single word TONE. That quest for tone drove us to develop our amplifiers. Our proprietary VTC (Virtual Tube Circuitry) gives the AT108 its in-your-face tube amp tone. It's an amp with such rich, harmonic character and buttery tube-like goodness, youll wonder where we hid the tubes.