The Ampeg SVT-3PRO is Ampeg"s most popular amp. This powerful, expressive head features multiple preamp tubes (3 x 12AX7), a 450-watt MOSFET power amp, and Ampeg"s sweet 5-position mid frequency selection for the killer bass sound that you"ve always wanted. The SVT-3PRO features professional, locking, high-conductivity Neutrik SpeakOn speaker connectors, a Mute button and a Tuner Out jack. If you"ve looked for the right amp to match your pro rig, this is the one. Ampeg SVT-3PRO Features Input Pad & Bright Switch Mute Function Tuner Out Variable Line Out Level Time Delayed Turn-On DC Supplied Filaments Variable Fan Speed 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 Pro Series heads live. All Pro Series heads feature multi-tube preamps (not a single 12AX7 like many competitors), five position mid frequency selection, and Neutrik Speak-On connectors that lock and provide better conductivity. A Mute button lets you change instruments in the middle of a set without the annoying pop, and a Tuner Out jack that stays active even with Mute button on. Pro Series heads are built for the long haul. The units remain cool with variable speed fans that only turn as the temperature dictates. DC supplied filaments ensure noise-free tube performance. And the 1/8 foot thick extruded aluminum front panels not only allow safe racking, the contoured fronts have an awesome look. Your creative mind now has the palette to deliver the goods.