Overtone HRM 50

  • 50 Watt

The Ceriatone Overtone Special HRM 50 is another unique Ceriatone perspective on classic American high-gain tone.

The Overtone Special HRM is a Ceriatone-massaged version of a certain “D” circuit iteration.  These amps are commonly referred to as “HRM”, which is a tip of the hat to hot-rodded British guitar tones.  The sound is generally more aggressive than their non-HRM counterparts, especially when the Preamp Boost is engaged.

HRM amps have an internal adjustable tonestack (treble, middle, bass) for the overdrive channel.  This allows the player to fine tune gain tone to their liking.  Also unique to the HRM amplifier, each channel has it’s own independent Master Volume control.

Like other OTS amps, we have labored carefully to select the finest components to suit the design.  As with all Ceriatone amplifiers, it uses our specially designed, custom transformers for superior reliability, frequency response, and feel.

Power Output 50 Watt
Feature Overview
  • Hi and Lo Inputs
  • Push-pull Bright switch on Gain control
  • Mid-boost, Deep, and Rock/Jazz toggle switches
  • Treble, Middle, Bass equalization (shared between channels)
  • Overdrive channel with Drive and Level controls
  • Internal Treble, Middle, Bass tonestack trimmers (overdrive channel)
  • Push-pull Bright switch on Overdrive Level control
  • Separate Volume controls for each channel
  • Footswitch (Channel and Preamp Boost)
  • Rear panel OD Trim (fine tunes response of overdrive channel)
  • Passive effects loop
  • Full/Half Power switch
  • Tubes
  • Power : 2 x 6L6GC
  • Preamp : 3 x 12AX7/ECC83
  • Rectifier : Solid State
  • Head Complete Head Unit USD 1,345.00 25.0kg Full working chassis in head cabinet. Footswitch included
    Options Without tubes USD 1,255.00 25.0kg Full working chassis without tubes in head cabinet. Footswitch included
    Without head cabinet USD 1,125.00 17.0kg Full working chassis without head cabinet. Footswitch included
    Without head cabinet and tubes USD 1,035.00 17.0kg Full working chassis without tubes and head cabinet. Footswitch included
    Complete Head Unit with Clator Built In USD 1,645.00 27.0kg Full working chassis in head cabinet with C-lator built in. Footswitch included
    Combo Complete Combo 1x12 Unit USD 1,400.00 35.0kg Full working chassis in combo 1x12 cabinet, sans speaker. Email us to enquire on speaker choice.
    Overtone HRM 50 Kits Package 1 USD 495.00 8.0kg All components with assembled board, faceplate, and chassis. Only OT, PT, choke, tubes and head cabinet not included. Footswitch included.
    Package 2 USD 715.00 17.0kg All components with assembled board, faceplate, chassis, choke, OT and PT . Only tubes and head cabinet not included. Footswitch included.
    Package 1 with assembly USD 815.00 8.0kg All components with assembled board, front plate, rear plate, and fully assembled in chassis. No OT, no PT, no choke, no tubes and no cabinet. Footswitch included.
    Board Assembled board USD 220.00 3.5kg Eyeleted, Sprague PS caps, RN65D and CF resistors, Teflon wired
    Cabinet Head USD 220.00 22.0kg Weight is for empty head cabinet only.Option to include C-lator cut out.
    Combo 1 x 12 cabinet USD 275.00 35.0kg Price and weight is for empty combo cabinet, without speaker. Email us to enquire on speaker choice.
    Chassis Steel USD 70.00 4.5kg Laser Punched Steel, Thickness 1.5 mm
    Faceplate Front plate USD 28.00 1.5kg Aluminum Panel, Reversed Silk Screened. Laser Cut and Punched, Black Color
    Rear plate USD 28.00 1.5kg
    Trannies Power & output trans & choke USD 220.00 11.0kg
    Tubes 3 x 12AX7, 2 x 6L6GC USD 90.00 3.5kg
    Layout Overtone HRM 50W Download
    Manual Overtone HRM 50W Download