Specifications

Quick Overview

Wattage Multi-Watt™ 10, 45 or 90 (Channel Assignable)
Power Tube Type 4x6L6 (or EL-34)
Channels & Modes 3 Channels / 9 Modes
Mode Voicings / Styles Ch. 1 = Clean, Fat or Tweed
Ch. 2 = Edge, Crunch or Mark I™
Ch. 3 = Mark IIC+™, Mark IV™ or Extreme
Graphic EQ / Reverb / FX / Solo Reverb, FX Loop & Solo
Footswitchable Functions Ch. 1, 2, 3, Solo, Reverb, FX Loop, Graphic EQ, Mute
Speaker(s) & Impedance 1 - 8 Ohm Celestion Custom 90 / Total Load = 8 Ohms
Weight 65 Lbs.
Dimensions 18 3/4" H x 22 3/4" W x 11 1/2" D
Available Formats Head & 1x12 Combo

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

Additional Amplifier Features

Extra Amplifier Features Normal/Bold Switch on Channel 1; Normal/Thick Switch on Channel 2 (Mark I Mode only); Normal/Bright Switch & Pentode/Triode Switch on Channel 3

Accessories

Footswitch Included - 4x4 - 8 Button Footswitch (Bottom Row: Ch. 1, Ch. 2, Ch. 3 & Solo - Top Row: Reverb, FX Loop, EQ & Tuner Mute)
Slip Cover Included - Fitted Slip Cover

Cabinet Features

Cabinet Material Marine Grade, Baltic Birch
Standard Finish Options (no extra cost) Black Taurus Vinyl with Black Jute Grille
Custom Finish Options See Custom Finish Gallery
Speaker(s) & Impedance 1 - 8 Ohm Celestion Custom 90 / Total Load = 8 Ohms
Transport Assistance Included - Tack-Loc Removable Casters

Additional Cabinet Features

Extra Cabinet Features None

Weight And Dimensions

Weight 65 Lbs.
Height 18 3/4"
Width 22 3/4"
Depth 11 1/2"

Available Formats

DISCLAIMER: In the interest of continuous improvement, all specifications are subject to change without notice. To guarantee correct fit on custom ordered cases & covers, MESA recommends that customers make personal measurements of their product, after they have been received. MESA provides these measurements as a general reference only, without guarantee or liability.