Mesa Boogie Mark Five 35 Guitar Amplifier Head - Hot Bronco White

Amplifier Features Amp Type Tube Chassis Material Aluminum Rectifier Type Silicon Diodes Rectifier Tubes n/a Variac Power Switch n/a Preamp Tubes 6x Mesa 12AX7 Power Amp Tubes 4x Mesa EL-84 Bias Switch for Alternate Power Tubes Types n/a Maintenance Free Fixed Bias Yes Wattage(s) Quick Reference 35 Watts  Built-In Power Amp Attenuation n/a Power Amp Details (Class & Wattage) Mesa's Patented Multi-Watt™ (Patent 7,602,927) Power Amp, featuring Dyna-Watt™ technology, providing three power levels and two wiring configurations (Pentode/Triode) via two 10/25/35 Watt Power Switches: Choose from 2 power tubes operating in Class A/B Triode for lush harmonics and a sweet, liquid feel at lower volumes, producing 10 Watts or; 2 or 4 tubes operating in Mesa's proprietary Dyna-Watt™ Class A/B Pentode for maximum power, punch and clarity, producing 25 or 35 Watts respectively Convection or Fan Cooling Fan Cooled Number of Footswitchable Channels (or Modes) Two Ch