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 |
2x Mesa EL-84 |
Bias Switch for Alternate Power Tubes Types |
n/a |
Maintenance Free Fixed Bias |
Yes |
Wattage(s) Quick Reference |
10 or 25 Watts - Channel Assignable - See Power Amp Details for more information |
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 two power levels, each with different wiring configurations (Pentode/Triode) via two 10/25 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 tubes operating in Mesa's proprietary Dyna-Watt Class A/B Pentode for maximum power, punch and clarity, producing 25 Watts |
Convection or Fan Cooling |
Convection |
Number of Footswitchable Channels (or Modes) |
Two Channels |
Number of Style Modes |
Six |
Number of Style Modes Per Channel |
Three |
Types of Style Modes Per Channel |
Ch. 1 = Clean, Fat or Crunch Ch. 2 = Mark IIC+™, Mark IV™ or Extreme |
Channel Controls |
Each Channel features Independent 3-Position Style Mode Switch, 10/25 Watt Multi-Watt™ Switch, Gain, Treble, Mid/Boost* (Ch 1), Mid (Ch 2), Bass, Presence, Reverb (back panel), Master and Graphic EQ Assignment Switch (On, Off or Footswitchable) - *The Mid/Boost Control on Channel 1 doubles as a standard Mid Control when set between 0 to 5 and turns into a Variable Gain Boost when set from 5 to 10 |
Graphic EQ and/or Contour |
Selectable 5-Band Graphic EQ (Footswitchable, Channel Assignable or Off) |
Reverb / Effects & Bypass Options |
All-Tube, Spring Reverb with Independent Channel Controls |
Effects Loop & Bypass Options |
Fully Buffered Series FX Loop |
Global Output Level Control |
n/a |
Global Solo Level Control & Bypassable Options |
n/a |
True-Bypass Options |
n/a |
Tuner Output |
n/a |
External Switching Jack Options and/or Midi |
n/a |
Speaker Outputs |
One 8 Ohm and Two 4 Ohm |
Cabinet Simulation - Direct Live/Recording Output |
Built-in Mesa CabClone™ Cab Simulator with Internal Amp Load & Headphone Output - Featuring Closed Back & Open Back Cabinet Simulations, Speaker On/Off and Ground Lift Switches |
Headphone Output |
Yes (see Cabinet Simulation for more information) |
Slave Output |
n/a |