The Vox VT40X modeling guitar combo amplifier employs sophisticated digital technology, along with a unique analog circuit, to bring you authentic tube power amp performance. Vox analyzed actual amp components and circuits when they designed the VT40X, so each of its 11 amplifier models sounds incredibly realistic. A multi-stage Valvetronix tube preamp incorporates true tube circuitry, so you feel the subtle nuances that you'd expect from a tube guitar amp. A tightly sealed cabinet and expertly designed bass-reflex structure, along with 13 classic stompbox effects, ensure that the Vox VT40X modeling guitar combo amplifier delivers an unbelievably powerful tone that far exceeds its modest size.