Marshall JMP Super Lead 1959 MK II 2-Channel 100-Watt Guitar Amp Head 1976- Black

Description

This 1976 Marshall JMP Super Lead 100-watt head is tested and works well. There is wear to the exterior Tolex, and it looks as if one output jack is missing from the back panel. Additional photos of the electronics are available upon request. The amplifier also comes with the front panel. If you’re interested, please make an offer.

Please note that the cabinet pictured is not included. The pictured cabinet is used to verify that the head works, but it is not for sale. The Super Lead 100 amp head is only for sale, not the cabinet.

Shipping is estimated at $200. Send us your address for an accurate shipping quote.

The 1976 Marshall JMP 1959 MK II Super Lead 2-Channel 100-Watt guitar amp head is known for its raw power and iconic rock tone. Below are the detailed specifications of this amp, based on available information from the web and historical data about the JMP series: Below are the detailed specifications for this model, based on available information from the web and historical data about the JMP series:

Specifications:

• Model: Marshall JMP 1959 MK II Super Lead
• Type: Tube Guitar Amplifier Head
• Power Output: 100 Watts RMS
• Channels: 2 (Bright and Normal, with high and low sensitivity inputs for each)
• Year: 1976 (part of the 1975–1981 production range for the MK II designation)
• Country of Origin: England
• Preamp Tubes: 3 x ECC83 (also known as 12AX7)
• Power Tubes: 4 x EL34 (Note: Some 1976 models, especially those exported to the USA, may have shipped with Tung-Sol 6550 tubes for durability during transport, though EL34s were standard for the classic Marshall sound. Conversion to EL34s was common for North American units.)
• Rectifier: Solid-state rectifier (replacing earlier tube rectifiers for improved reliability)
• Front Panel Controls:
  • Presence
  • Bass
  • Middle
  • Treble
  • Volume I (Bright Channel)
  • Volume II (Normal Channel)
• Inputs: 4 x 1/4″ jack inputs (2 per channel: High and Low sensitivity)
  • High Sensitivity Input 1 (Bright Channel)
  • Low Sensitivity Input 1 (Bright Channel)
  • High Sensitivity Input 2 (Normal Channel)
  • Low Sensitivity Input 2 (Normal Channel)
• Output Transformers: Drake transformers (original for 1976 models)
• Choke: Dagnall choke (typical for the era)
• This 1976 Super Lead was the first to have a combination of hand-wired elements and circuits.
• Covering: Black Tolex (standard for 1976 models, though custom colors like red existed in rare cases).
• Impedance Selector: Rear panel impedance selector for 4, 8, or 16 ohms (some units had hardwired outputs to 8 or 16 ohms to avoid issues with aging selectors).
• Tone Characteristics: The 1976 JMP 1959 MK II Super Lead head features Plexi sounds. It’s rich in harmonics and has a roaring upper midrange with heavy low-mids.