The awesome power and tonal flexibility of the Ampeg SVT-4PRO make it stand out, and for players looking for a classic sound with modern features, your search is over. This rackmountable bass head excels at keying into a spectrum of tones with a 9-band graphic EQ, frequency control, and footswitch-accessible functions volume boosts. Additional gain and compression controls allow players to delve deeper into the bass tones possible from this head. The Ampeg SVT-4PRO is a fine tuned machine for getting the most out of your bass with a wildly colorful tonal palette.