The Vox VT20X features a next-gen Vox modelling engine which uses VET (Virtual Element Technology). VET accurately simulates and mirrors the tones of a variety of classic and well-loved amplifiers and as a the result the VT20X is able to respond to dynamics and pedals just like the real thing! The addition of the Vox Valvetronix tube preamp with analog circuitry provides added warmth for a more authentic sound. The cab has been designed from the ground up to provide maximum bass response for a small cabinet. 13 onboard effects adds to the versatility of the VT20X.