The VOX Valvetronix Pro VTX150 Neodynium 150W 1x12 hybrid guitar combo amp offers highly realistic amp models and a versatile array of in-demand sounds and effects. At the heart of every Valvetronix amp is the "Valve Reactor" circuit. First introduced in 2001, the Valve Reactor circuit uses a real vacuum tube to provide it with a true tube tone. It boasts 44 amp models along with a diverse selection of pedal, modulation, delay, and reverb effects to refine your sound. It uses a Celestion VOX NeoDog speaker which allows this amp's nuances and thunderous dynamics to be heard. Ample expandability is provided, including an effect loop and extension speaker output.