Amplifier Features |
| Amp Type |
Tube |
| Chassis Material |
Aluminum |
| Rectifier Type |
Tube or Silicon Diodes with Patented Rectifier Tracking™ (Auto-matches Tube for all 10 Watt Modes, Diode for all 90 Watt Modes, selectable Tube or Diode for 45 Watt Modes on Channels 1 and 2, Diode for 45 Watt Mode on Channel 3 - Patent 7,193,458) |
| Rectifier Tubes |
1x Mesa 5U4GB |
| Variac Power Switch |
Tweed Power Switch |
| Preamp Tubes |
7x Mesa 12AX7 |
| Power Amp Tubes |
4x Mesa 6L6 STR 440 |
| Bias Switch for Alternate Power Tubes Types |
Bias Select for 6L6 or EL-34 |
| Maintenance Free Fixed Bias |
Yes |
| Wattage(s) Quick Reference |
10, 45 or 90 Watts - Channel Assignable - See Amp Details above for more information |
| Built-In Power Amp Attenuation |
n/a |
| Power Amp Details (Class & Wattage) |
Mesa's exclusive Simul-Class™ Power Amp featuring Multi-Watt™ (Patent 7,602,927) and Duo-Class™ (Patent 7,173,488) technologies which provide three power and three operating-class options that are channel assignable via 10/45/90 Watt Power Switches: Choose 2 power tubes operating in pure vintage Class A (single-ended), producing 10 Watts - 2 tubes running in time-honored Class A/B producing 45 Watts or 4 tubes running in Mesa's legendary Simul-Class™ Power that blends the best of Class A and Class A/B simultaneously to produce 90 Watts of pure tonal magic |
| Convection or Fan Cooling |
Fan Cooled with On/Off Switch |
| Number of Footswitchable Channels (or Modes) |
Three Channels |
| Number of Style Modes |
Nine |
| Number of Style Modes Per Channel |
Three |
| Types of Style Modes Per Channel |
Ch. 1 = Clean, Fat or Tweed
Ch. 2 = Edge, Crunch or Mark I™
Ch. 3 = Mark IIC+™, Mark IV™ or Extreme |
| Channel Controls |
Each Channel features Independent 3-Position Style Mode Switch, EQ Assignment Switch (On, Off or Footswitchable), 90/45/10 Watt Multi-Watt™ Switch Gain, Treble, Mid, Bass, Presence, Master, Footswitchable or Auto- Assignable Contour Depth Control, Footswitchable All-Tube, Long Spring Reverb Control, Patented Rectifier Tracking™ (Auto-selects Tube for all 10 Watt Modes, Diode for all 90 Watt Modes, selectable Tube or Diode for 45 Watt Modes on Channels 1 and 2, Diode for 45 Watt Mode on Channel 3 - Patent 7,193,458) |
| Graphic EQ and/or Contour |
5-Band Graphic EQ and Contour |
| Reverb / Effects & Bypass Options |
All-Tube, Long Spring Reverb with Independent Channel Controls - See True-Bypass Options below for more information |
| Effects Loop & Bypass Options |
Fully Buffered Series FX Loop w/Send Level Control - Footswitchable, Channel Assignable or True Bypassable - See True-Bypass Options below for more information |
| Global Output Level Control |
Yes (Over all channels when activated) |
| Global Solo Level Control & Bypassable Options |
Yes (Over all channels when activated)- See True-Bypass Options below for more information |
| True-Bypass Options |
True-Bypass Switch removes FX Loop, Output & Solo Level Controls |
| Tuner Output |
Yes (back panel) with Footswitchable Mute |
| External Switching Jack Options and/or Midi |
External Switching Jacks for Channels 2, 3 (Ch. 1 is default), EQ & Solo |
| Speaker Outputs |
Two 8 Ohm and Two 4 Ohm |
| Cabinet Simulation - Direct Live/Recording Output |
n/a |
| Headphone Output |
n/a |
| Slave Output |
Yes with Level Control |
