The Ceriatone Overtone Special HRM 100 is a Ceriatone amplifier. Close alternatives include the Rowin LEF-315 Dumbler Amp Sim and the DSM Silver Linings Drive Preamp Engine. It pairs well with the Walrus Audio Eons and the Colorsound Overdriver.

Ceriatone Overtone Special HRM 100

Ceriatone · amplifier

The Ceriatone Overtone Special HRM 100 is the 100-watt version of Ceriatone's hand-wired Dumble Overdrive Special clone built with the His Royal Majesty midrange tone stack. The extra power gives a very large, three-dimensional clean channel that stays articulate and punchy at high stage volume, while the HRM overdrive channel produces a forward, vocal midrange and long, singing sustain with strong harmonic detail. Like the rest of the Overtone Special family it is point-to-point wired and strongly touch sensitive, responding to pick attack and guitar volume the way the original circuit does. Its scale suits players working at band and stage volume, particularly blues, fusion and soul lead work where clean headroom matters as much as the lead voice.

What stands out

  • “Its scale suits players working at band and stage volume, particularly blues, fusion and soul lead work where clean headroom matters as much as the lead voice”

    — from the listing

  • “The extra power gives a very large, three-dimensional clean channel that stays articulate and punchy at high stage volume, while the HRM overdrive channel produces a forward, vocal midrange and long, singing sustain with strong harmonic det…”

    — from the listing

  • “Chosen mainly for headroom: at 100 watts the clean channel stays clear and dimensional where smaller amps compress, which is why it appears on larger stages”

    — from the community notes

  • “Like the rest of the Overtone Special family it is point-to-point wired and strongly touch sensitive, responding to pick attack and guitar volume the way the original circuit does”

    — from the listing

  • “The trade-off is that it is difficult to use at home or in a small room, and many owners pair it with an attenuator”

    — from the community notes

  • clean
  • headroom
  • clarity
  • clean headroom
  • vocal
  • attenuator
  • clear
  • singing sustain

Good for

  • Live

Genres the Ceriatone Overtone Special HRM 100 is commonly used in

  • Soul
  • Blues
  • Jazz
    citedInferred from shared tonal signals, not a stated genre tag.
  • Rock
    citedInferred from shared tonal signals, not a stated genre tag.
  • Blues Rock
    citedInferred from shared tonal signals, not a stated genre tag.
  • Jazz Fusion
    citedInferred from shared tonal signals, not a stated genre tag.

Pedals that stack with the Ceriatone Overtone Special HRM 100

Walrus Audio Eons

Walrus Audio

21% match
$210.49via Reverb

clean platform takes the driveA clean, high-headroom stage takes on dirt it can't generate by itself. (transparent → fuzzy)

Walrus Audio Eons leans this transparent tone toward fuzzy, which it doesn't make on its own

Goes in front of the amp

Colorsound Overdriver

pedal

21% match

clean platform takes the driveA clean, high-headroom stage takes on dirt it can't generate by itself. (transparent → fuzzy)

Colorsound Overdriver leans this transparent tone toward fuzzy, which it doesn't make on its own

Goes in front of the amp

EarthQuaker Devices Hoof Reaper

EarthQuaker Devices

20% match
$299via Reverb

clean platform takes the driveA clean, high-headroom stage takes on dirt it can't generate by itself. (transparent → fuzzy)

Into a transparent tone, EarthQuaker Devices Hoof Reaper brings a pull toward fuzzy that's missing

Goes in front of the amp

Boss BF-2 Flanger

Boss

14% match
$100via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Keep Ceriatone Overtone Special HRM 100's transparent voice out front: Boss BF-2 Flanger goes after Ceriatone Overtone Special HRM 100 in the signal chain so its lush voice doesn't muddy it

Goes in front of the amp

Wampler Mini Ego 76 Compressor

Wampler

11% match
$179.28via Reverb

shapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain.

Wampler Mini Ego 76 Compressor's own compressed character is the real reason this is worth trying

Goes in front of the amp

Binson Echorec Delay

Binson

7% match

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Put Binson Echorec Delay in Ceriatone Overtone Special HRM 100's effects loop, clear of Ceriatone Overtone Special HRM 100's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

Electro-Harmonix Memory Boy Analog Delay

Electro-Harmonix

7% match
$104.76via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Keep Electro-Harmonix Memory Boy Analog Delay in Ceriatone Overtone Special HRM 100's effects loop, clear of Ceriatone Overtone Special HRM 100's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

Dr. Scientist Frazz Dazzler V2

Dr Scientist

tonal match
$203.84via Reverb

Goes in front of the amp

Dr. Scientist Frazz Dazzler V2 leans this transparent tone toward fuzzy, which it doesn't make on its own

Alternativessee all similar tone character →

See all alternatives to the Ceriatone Overtone Special HRM 100 (cheaper + boutique) →

Questions people ask

What are good alternatives to the Ceriatone Overtone Special HRM 100?+

The closest matches in character are the Rowin LEF-315 Dumbler Amp Sim, the DSM Silver Linings Drive Preamp Engine, the Mooer Micro PreAmp 010 (Two Rock Coral).

What pairs well with the Ceriatone Overtone Special HRM 100?+

Strong matches from rig and tone-complementarity evidence: Walrus Audio Eons, Colorsound Overdriver, EarthQuaker Devices Hoof Reaper — Walrus Audio Eons leans this transparent tone toward fuzzy, which it doesn't make on its own.

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