The majority of Ampeg Pro Series heads feature multi-tube preamps (not a single 12AX7 like many competitors), 5-position mid frequency selection, and Neutrik Speak-On(r) 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 in. thick extruded aluminum front panels not only allow safe racking, the contoured fronts have an awesome look.
Features :
Input Peak LED, Input Pad and Bright Switch, Mute Function, Tuner Out, Variable Line Out Level, Time Delayed Turn-On, DC Supplied Filaments, Variable Fan Speed
RMS Power Output (8 Ohms): 275-Watts , RMS Power Output (4 Ohms): 450-Watts , Preamp: Tubes (3 x 12AX7) , Driver Tubes: 1 x 12AX7, 1 x 12AU7 , Power Amp: Solid-State, Tone Controls : 3-Band
Mid Tone Control: 5-Position , Graphic EQ: Yes, 9-Band , Ultra Low/High Boosts: Yes , Balanced Line Out: Yes, Pre/Post with Ground Lift and Level , Effects Loop: Yes , Preamp Out/Power Amp In: Yes, Dimensions (W x H x D inches): 19 x 3.5 x 15.5, Weight: 26 Pounds
Mid Tone Control: 5-Position , Graphic EQ: Yes, 9-Band , Ultra Low/High Boosts: Yes , Balanced Line Out: Yes, Pre/Post with Ground Lift and Level , Effects Loop: Yes , Preamp Out/Power Amp In: Yes, Dimensions (W x H x D inches): 19 x 3.5 x 15.5, Weight: 26 Pounds