The MARK V is really a collection of amplifiers. There are far too many circuits and sounds to think of it as merely an amp. It is also a living history of Mesa. From the groundbreaking MARK I that introduced the world to high-gain with it's cascading pre amp, to the Mark II - the world's first high gain Dual Mode Channel Switching amplifier and it's later siblings that introduced Simul-Class power. From the MARK III that ushered in the era of 3 Channel footswtching performance, to the MARK IV which gave all this power individual control, the MARK V is the embodiment of the last 40 years of guitar amp history. Specifications: Bias Select Switch (6L6/EL34) Fixed Bias for Consistent, Maintenance Free Performance Full Power/Variac Power Switch (Patent 5,091,700) 3 Fully Independent Channels with 9 Modes (Channel 1 = Clean, Fat or Tweed, Channel 2 = Edge, Crunch or Mark I, Channel 3 = Mark IIC+, Mark IV or Extreme) 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 Each Channel features: Independent Gain, Treble, Mid, Bass, Presence, Master, Footswitchable or Auto-Assignable Contour Depth Control, Footswitchable All-Tube, Long Spring Reverb Control, 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 - Patents 5,168,438 & 7,193,458) 5 Band Graphic EQ is Footswitchable, Channel Assignable and Selectable between 1 group of 5-Band Sliders or 3 channel specific, variable depth Contour Controls Footswitchable, Channel Assignable or True Bypassable All-Tube FX Loop with Send Level Control (over all channels when activated) Output Level Control (over all channels when activated) Footswitchable Solo Level Control - Patent 6,724,897 (over all channels when activated) True Hard Bypass Switch removes FX Loops, Output Level & Solo Level Controls from signal path Tuner Output w/Footswitchable Mute Slave Out w/Level Control Fan Cooled with On/Off Switch External Switching Jacks for Channels 2, 3 (channel 1 is default), EQ & Solo Aluminum Chassis - New 4x4 - 8 Button Footswitch (Bottom Row: Channel 1, Channel 2, Channel 3, Solo - Top Row: Reverb, FX Loop, EQ & Tuner Mute)
