The Holy Grail of High-Gain Amplification Reborn
The Guitar Sanctuary is honored to present the legendary Mesa/Boogie Mark IIC+ Head in Black Bronco tolex with a Black Jute grille. Widely regarded by tone purists, studio legends, and heavy metal pioneers as the single most iconic high-gain tube amplifier in rock history, the original 1984 Mark IIC+ defined the sound of 80s lead playing and aggressive rhythm tracking. Handcrafted in Petaluma, California, this official reissue built under the direction of Mesa founder Randall Smith recreates every nuance, dynamic feel, and searing harmonic response of the historic original circuit.
Simul-Class™ Power & Legendary 5-Band Graphic EQ
At the heart of the Mark IIC+ voice is Mesa’s revolutionary Simul-Class™ Power Amp, combining two 6L6 power tubes running in Class AB for headroom and punch, alongside two 6L6s (or EL34s) running in Class A for rich, sweet harmonic overtones. Rated at 75 Watts (switchable down to 25 Watts Class A), it delivers liquid-like sustain, articulate pick attack, and effortless string clarity even under extreme distortion settings.
The front control panel features the iconic 5-Band Graphic EQ, giving you surgical control over sub-bass thump, mid-range scoop, and high-frequency presence. Coupled with front-panel pull switches for Volume 1 Bright, Lead Bright, Lead Shift, and Bass Shift, you can voice this head for pristine vintage cleans, roaring edge-of-breakup blues, or the explosive, tight "V-Curve" high-gain scoop that reshaped modern metal.
Product Intelligence & Buyers Guidance:
- Best For: Heavy Metal, Hard Rock, Progressive Shred, Fusion, Blues, and Elite Studio Recording.
- Tone Profile: Ultra-fast attack, dense midrange crunch, liquid lead sustain, and tight, non-boomy low-end thump with crystalline treble air.
- Compared To: Modern high-gain multi-channel heads—the Mark IIC+ offers a noticeably tighter, more focused lead response, smoother harmonic blooming, and a distinctive mid-frequency core that cuts through dense mixes.
- Sanctuary Expert Note: "The Mark IIC+ is the definitive holy grail for a reason. Having the exact, authentic circuit back in production with pristine 5-band graphic EQ control gives players access to the exact tone that built classic high-gain records without paying vintage collector prices."
Technical Specifications:
- Build Location: Handcrafted in Petaluma, California, USA
- Amp Type: All-Tube Multi-Mode Guitar Amplifier Head
- Power Output: Simul-Class™ Power (Switchable 75 Watts / 25 Watts Class A)
- Power Tubes: 4 x 6L6 (Selectable Bias Switch for 6L6 or EL34)
- Preamp Tubes: 5 x 12AX7
- Channels: 2 Channels with Rhythm & Lead Voicings
- Controls: Volume 1, Bass, Middle, Treble, Lead Drive, Lead Master, Master Volume
- Pull Switches: Pull Bright (Vol 1), Pull Shift (Bass), Pull Bright (Lead), Pull Shift (Lead)
- Equalization: Classic 5-Band Slider Graphic EQ (Footswitchable / Assignable)
- Reverb: All-Tube Analog Long-Spring Reverb
- Effects Loop: Buffered Series Effects Loop with Slave Out & Level Control
- Cabinet Material: Marine-Grade, Void-Free Baltic Birch
- Finish: Black Bronco Vinyl with Black Jute Grille
- Footswitch Included: 2-Button Footswitch (Lead/Rhythm & EQ Select)
- Dimensions: 9-5/8" H x 18-3/4" W x 10-1/2" D
- Weight: 35 lbs.
PRODUCT NAME & FORMAT: Mark IIC+ Head
PRODUCT SERIES: Mark Series
BUILD LOCATION: Built In Petaluma, CA, with the World’s Finest Materials
QUICK OVERVIEW
WATTAGE: 75 or 25 Watts (Global)
POWER TUBE TYPE: 4x Mesa 6L6 Power Tubes
CHANNELS & MODES: Single Channel/Dual Mode (RHYTHM & LEAD)
MODE VOICINGS/STYLES:
RHYTHM - Traditional Clean to Vintage Gain, Independent Volume 1 (Gain) with Pull Bright & Master 1 with
Pull Deep Controls to set initial gain independent of playing volume
LEAD – Cascading High-Gain (Lead), Utilizes Volume 1 to set initial gain strength then features Independent
Lead Drive (Gain) with Pull Lead (to manually channel switch) & Lead Master with Pull Deep Controls to
adjust the level of cascading gain independent of the playing volume
CHANNEL CONTROLS: Each Channel features Independent 2-Position Style Mode Switch, Gain, Treble, Mid, Bass, Presence, Reverb (back panel), Master & Multi-Soak Power Controls
GRAPHIC EQ / REVERB / FX / SOLO FX Loop/: 5 Band Graphic EQ/Reverb
FOOTSWITCHABLE FUNCTIONS: Modes, EQ, Reverb
SPEAKER(S) & IMPEDANCE: n/a
WEIGHT: 39 lbs | 17.69 kg
DIMENSIONS: 9 1/4” H X 18 3/4” W X 10 3/8” D
AVAILABLE FORMATS: Head & 1x12 Combo
AMPLIFIER FEATURES
AMP TYPE: Tube
CHASSIS MATERIAL: Steel
RECTIFIER TYPE: Silicon Diodes
RECTIFIER TUBE(S): n/a
VARIAC POWER SWITCH: n/a
PREAMP TUBES: 5x 12AX7
POWER AMP TUBES: 4x 6L6
BIAS SWITCH FOR ALTERNATE POWER TUBE TYPES: n/a
MAINTENANCE FREE FIXED BIAS: Yes
WATTAGE(S) QUICK REFERENCE (SEE POWER AMP
DETAILS FOR MORE INFO): 75 or 25 Watts (Global)
BUILT-IN POWER AMP ATTENUATION: n/a
POWER AMP DETAILS (CLASS & WATTAGE): Exclusive Simul-Class™ Power Amp – Provides the benefits of vintage Class-A and modern Class A/B running simultaneously
CONVECTION OR FAN COOLING: Fan Cooled
NUMBER OF FOOTSWITCHABLE CHANNELS (OR MODES): Single Channel, Dual Mode
NUMBER OF STYLE MODES: 2
NUMBER OF STYLE MODES PER CHANNEL: Single Channel, 2 Modes
TYPES OF STYLE MODES PER CHANNEL:
RHYTHM Mode - Traditional Clean to Vintage Gain, Independent Volume 1 (Gain) with Pull Bright & Master
1 with Pull Deep Controls to set initial gain independent of playing volume
LEAD Mode – Cascading High-Gain (Lead), Utilizes Volume 1 to set initial gain strength then features
Independent Lead Drive (Gain) with Pull Lead (to manually channel switch) & Lead Master with Pull Deep
Controls to adjust the level of cascading gain independent of the playing volume
CHANNEL CONTROLS RHYTHM/LEAD: Shared Controls: Volume 1 (sets initial gain strength for both channels), Treble, Bass, Middle, Assignable/Foot-Switchable 5-Band Graphic EQ, Reverb & Presence
GRAPHIC EQ AND/OR CONTOUR: 5-Band Graphic EQ
REVERB / EFFECTS & BYPASS OPTIONS: EQ Bypass
EFFECTS LOOP & BYPASS OPTIONS: Tube-Driven, Series FX Loop
GLOBAL OUTPUT LEVEL CONTROL: n/a
GLOBAL SOLO LEVEL CONTROL: n/a
TRUE-BYPASS OPTIONS: n/a
TUNER OUTPUT: n/a
SPECIFICATIONS:
EXTERNAL SWITCHING JACK OPTIONS AND/OR MIDI: n/a
SPEAKER OUTPUTS: 1x 8 Ohm and 2x 4 Ohm
CABINET SIMULATION - DIRECT LIVE/RECORDING OUTPUT: n/a
INTERNAL AMP LOAD (FOR SPEAKER-LESS PERFORMANCE): n/a
HEADPHONE OUTPUT: n/a
SLAVE OUTPUT: n/a
ADDITIONAL AMPLIFIER FEATURES
EXTRA FEATURES: n/a
ACCESSORIES
FOOTSWITCH: Two: 1x Single-Button Footswitch (Modes 1/2), 1x Two-Button Footswitch (Reverb/EQ)
SLIPCOVER: Included - Fitted Slipcover
CABINET FEATURES
CABINET MATERIAL: Marine Grade, Baltic Birch
STANDARD FINISH OPTIONS (no extra cost): Black Bronco Vinyl, Black Nylon Grille, Black Rubber Handle with Chrome End Caps & Metal Corners
CUSTOM FINISH OPTIONS: n/a
SPEAKER(S) & IMPEDANCE: n/a
CASTERS: n/a
We are open Tuesday-Saturday from 10am until 6pm CDT.
Any order placed before 3pm CDT Tuesday through Saturday is processed for shipment the same day. Orders placed Sunday-Monday will be processed for shipment the following Tuesday.
For Free Shipping items, Effects pedals and small goods items are generally shipped via USPS Priority Mail, and Guitars and Amplifiers are generally shipped via UPS Ground.
Due to our central location in the middle of the US, most orders will be delivered within 1-3 days delivery time.
Other shipping methods are available (at an additional cost), including next day air.
Please call us directly at (972)540-6420 if you have any questions regarding shipping for your order.
Product Videos
Videos Hide Videos Show Videos
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Official Trailer: The legendary MESA/Boogie® Mark IIC+ returns
Watch the full demo HERE: https://youtu.be/l7IB39wehzE?si=gXou...
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MESA/Boogie® Mark IIC+ full demo & tutorial ft. Doug West & Tommy Waugh
The wait is over–enjoy the full demo of the MESA/Boogie Mark I...
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Dialing in your MESA/Boogie® Mark IIC+ deep dive with Doug West – All tones & settings tutorial
Doug West shows you exactly how to use your MESA/Boogie® Mark ...
Custom Field
Product Reviews
1 Review
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MKII C+ RI
Great amp! What can I say thats not already said. I am also not an owner of an OG MKIIC+ but I do have a MKIII Purple stripe, MKIV RevA, JP2C, Traixis / 2:90 combo. This amp is my go to for THE sound and FEEL. Don't hesitate to get one, you won't regret it if you are a MK fan
