The Vox VT40X 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 VT40X 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 VT40X.Vox Tone Room editing software is also included with the VT40X which allows you to edit and create your own presets, resulting in almost limitless possibilities.