The sound is in your head. You've played countless instruments in search of the ultimate soul mate. Now you need an amp that will speak your sound to the audience. That's where the SVT-3PRO comes in. SVT-3PRO is 450W bass head with tube preamp and solid state power amp. There's a reason this amp is a best seller - it delivers the goods! With up to 450 watts and the sweet sound of tubes, the SVT-3PRO is the top choice of rockers and funkmeisters around the globe. The SVT-3PRO offers SVT tone and performance (with a few modern enhancements) in a convenient rackmount design. Moderate size, significant power and genuine Ampeg Round Sound... everything a serious bassist needs.