Suhr SL67 MKII Hand-Wired 50W Tube Amp Head - Black Tolex

Definitive 1967 Super Lead Tone with Modern Master Volume Control

Engineered by John Suhr and the master builders in Lake Elsinore, California, the Suhr SL67 MKII™ Hand-Wired Amp Head is the definitive realization of the iconic 1967 and 1968 50-watt British Super Lead circuit. Built using point-to-point hand-wired construction, custom hand-wound transformers, and ultra-premium components, the SL67 MKII delivers the explosive dynamics, rich harmonic compression, and woody vocal crunch that defined classic rock tone.

Powered by a matched pair of EL34 power tubes and three 12AX7 preamp tubes, the SL67 MKII outputs a muscular 50 watts RMS of Class A/B power. The updated MKII design incorporates John Suhr's transparent post-phase-inverter Master Volume (PPIMV) circuit on the rear panel. This allows players to achieve fully cranked power-section saturation, aggressive upper-midrange bite, and sag at whisper-quiet studio volumes or full stage levels without compromising the amp's natural organic tone.

Dual Inputs, Channel Bridging & Precision Tone-Shaping

The SL67 MKII features two distinct channels with four individual inputs: Channel I (High Treble) for signature Plexi bite, presence, and upper-midrange slice, and Channel II (Normal) for deep, round low-end response. Players can run directly into either channel or bridge Channels I and II using a short patch cable to blend the bright and normal preamp stages for complete control over gain staging and tonal balance. The front panel includes Volume I, Volume II, Treble, Middle, Bass, and Presence controls for intuitive, highly reactive tone shaping.

Technical Specifications:

• Circuit Design: Point-to-point hand-wired Class A/B all-tube circuit
• Power Output: 50 Watts RMS
• Power Tubes: 2 x EL34 matched power tubes
• Preamp Tubes: 3 x 12AX7 preamp tubes
• Master Volume: Rear-panel Master Volume (PPIMV circuit with true-bypass feature)
• Channels: 2 Channels (Channel I / Channel II) with 4 inputs (High/Low sensitivity per channel)
• Controls: Volume I, Volume II, Treble, Middle, Bass, Presence
• Outputs: Dual speaker outputs with selectable impedance switch (4Ω / 8Ω / 16Ω)
• Transformers: Custom hand-wound power and output transformers
• Cabinet Construction: Resonant solid pine cabinet in Black Tolex with Tolex front panel
• Dimensions & Weight: 29" (W) x 11" (H) x 8.25" (D) | Weight: 42 lbs
• Origin: Hand-built in Lake Elsinore, California, USA

Sanctuary Expert Note:

If you crave the legendary response, roar, and touch-sensitivity of a vintage 1967 50-watt Plexi but need modern Master Volume flexibility to work across any gig or recording session, the Suhr SL67 MKII is unmatched in modern hand-wired amplifier manufacturing.