Powered by a 12AX7 triode vacuum tube and sporting fifty amp, cabinet, pedal and modulation presets with a built in wah/volume pedal to boot, the Vox Valvetronix Tonelab ST is a comprehensive multi-effect unit with an affordable price tag. Built with USB capabilities for editing and an even wider expanse of customized effects, this unit is a great alternative to an overcrowded pedalboard and a great introduction for the newcomer to effects.