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BC Audio Octal-Plex JMX50


  • The late-1960's 50-watt Plexi circuit enhanced with octal preamp tubes and constructed with true point-to-point wiring make BC Audio's Octal-Plex JMX50 one exceptional amplifier. Distortion Brothers is proud to share these incredible amps being made by Bruce Clement right here in San Francisco.

    At its core, the JMX50 is a classic, medium-gain British tone made extremely versatile with distinct, foot-switchable volume and gain boosts. Tone sculpting is maximized with a Normal + Bright channel linking, a tube-buffered, pre-master return effects loop, and a post-phase inverter master volume.

    To build the JMX50, Bruce uses true point-to-point wiring and the best components available, including American-made paper bobbin/paper layer wound transformers and custom-built 16 gauge zinc-coated steel chassis with welded corners.

    Available for sale here is the Octal-Plex JMX50 head. Matching speaker cabinets, such as the one pictured here, are also available.

  • CATEGORY SPECIFICATION
    Covering Black Tolex with Orange Stripes and Silver Piping
    Output Power 50 watts
    Channels 2 Channels with foot-switchable volume boost & gain boost
    Controls Normal Volume, Channel Select Switch, Bright Volume, Bass, Middle, Treble, Master Volume, & Presence
    Effects None
    Effects Loop Tube-buffered, Persistent Send, Pre-master Return, & True Bypass
    Rectifier Silicon Diode
    Preamp Tubes 4 x 6SL7GT
    Power Tubes 2 x EL34
    Speaker Load 4k/8k/16k ohms
    Measurements 9.5" H x 26" W x 8.75" D & 36 lbs.