The Dumble website went live with a product page on October 6, and for the first time in the brand's history you can look at a Dumble amplifier with a number next to it:
| Model | Price | Status at time of writing |
|---|---|---|
| Dumble® Tweedle Dee® | $7,000 | Sold out |
| Dumble® MegaPLX™ | $12,000 | Sold out |
| Dumble® Overdrive Special® | $25,000 | Sold out |
Units are expected to ship late October 2026. Prototypes were shown at NAMM earlier this year, so this has been coming — the website is the part that's new.
I spent 25 years behind a counter in Austin and I have appraised a lot of things people were emotional about. So let me do the unglamorous part first, because it's my job.
What You Are Actually Buying
Howard "Alexander" Dumble died in 2022. That is not a footnote, it is the whole appraisal.
For fifty years the value of a Dumble was never really the circuit. Circuits leak. Schematics for the Overdrive Special have been traced, posted, argued over and built by hobbyists for two decades — Two-Rock, Fuchs, Bludotone, Ceriatone and a dozen one-man shops have been selling Dumble-derived amps the entire time, some of them very good. What you could not buy was Howard deciding what your amp should be, listening to your playing, and voicing a one-off accordingly. Every real Dumble is a different amp because that was the product.
So these are recreations of his most famous circuits, built after his death. Per gearnews, prices aren't actually transacted on the page — you apply, which deliberately mirrors how Howard worked. That's a tasteful choice and I don't begrudge it.
Here is how I'd price it for a client, which is the only way I know how to talk:
- A real Overdrive Special with provenance has traded well into six figures. That market is unaffected by this. Possibly helped.
- A new $25,000 Overdrive Special is competing with Two-Rock Classic Reverb Signature territory at a third of the money, from a company whose current builders are known and whose service is known.
- The $25,000 is buying the name, the first-run position, and a bet on how history treats this. That is a legitimate thing to buy. It is not a tone purchase, and anyone who tells you it's about the tone is selling.
I own a 1964 Deluxe Reverb and a pre-CBS Strat and an original gold Klon, and I will cheerfully talk your ear off about all three. So I am the last person who will mock a provenance purchase. I just want it labeled correctly.
Now the part that matters to almost everyone reading this, which is the 99% of us who will never order one.
Three Modelers, Three Different Dumbles — and One That Isn't One
This is the thing I had to go verify before I believed it, and it changed how I set up my own patches.
There is no such thing as "the Dumble model." The big three each went and modeled a different specific amplifier, and the differences are circuit-level, not preference-level:
| Platform | Model name | What it's actually based on |
|---|---|---|
| Fractal (Axe-Fx III, FM9, FM3) | ODS-100 Clean / ODS-100 Ford | Schematics said to represent Robben Ford's tan Dumble, serial #102 |
| Fractal | ODS-100 HRM | Cliff Chase's own Dumble, serial #213 — EL34s, HRM circuit |
| Neural DSP (Quad Cortex, Nano Cortex) | Dumbell ODS | A 1992 Overdrive Special, low-plate "Skyliner," non-HRM |
| Line 6 (Helix, HX Stomp, POD Go, Native) | Litigator | Not a Dumble. Line 6 calls it an original Line 6 design. Our own cheat sheet lists it as Fuchs ODS-50 derived — which is a Dumble-derived amp, one generation removed |
Read that last row twice if you own a Helix, because it is the single most common misconception in this corner of the gear world. The Litigator is the Helix's Dumble-flavored amp, and it is genuinely excellent — our underrated Helix models piece ranks it and makes the case that "it's not a real amp" is the wrong reason to skip it. I agree with that entirely. But if you are chasing a documented Overdrive Special tone, you are starting from a model of a clone, not a model of the thing.
That is a provenance distinction, and provenance is what I do.
HRM Is the Fork That Decides Everything
If you remember one piece of vocabulary from this, make it this one.
HRM — "Hot Rubber Monkey," and yes that's really what it's called — is a Dumble modification that puts a fixed Marshall-style tone stack at the output of the overdrive channel. A Marshall tone stack scoops the mids. That is its defining behavior.
So:
- HRM Dumbles (Fractal's ODS-100 HRM, #213) have a mid scoop baked into the drive channel that you cannot dial out, because it isn't on a knob. More aggressive, more modern-rock, more obviously "distorted."
- Non-HRM Dumbles (Neural's Dumbell ODS, the 1992 Skyliner) have no such scoop. The mids stay where the amp put them. More open, hornier in the midrange, much closer to the John Mayer / Larry Carlton idea most people actually have in their head when they say "Dumble."
This is why two players can both say "I'm using the Dumble model" and be describing two different amplifiers. They are.
Practical consequence: if you've been trying to get a non-HRM clean-into-sweet-drive sound out of an HRM model by cranking the Mid knob, you've been fighting a fixed network with a variable one. You can get partway. You cannot get there. Switch models instead.
Where I'd Actually Start, Per Platform
The Overdrive Special's identity is high headroom and crystalline cleans, with the drive sitting on top of that rather than replacing it. Most people set these models up like a gain amp and then wonder why they sound generic. The clean channel is at least half the amp — our cheat sheet notes exactly that in the Litigator row, and it's correct.
On a Helix family unit (Litigator):
Start at the cheat sheet's Gain 48% and resist the urge to go up. Then:
- Master to 7.0–8.0, and pull the block Level back to compensate. You want the modeled power section working, because sag and compression are where the "it breathes" quality lives. (Helix amp parameters are a 0–10 scale, not 0–1. If you've been entering decimals you have a different problem and we have written about it.)
- Treble around 5.5, Presence low — 3.0 or under. The thing that makes clones sound like clones is too much presence standing in for clarity. Clarity on this circuit comes from headroom, not top end.
- Get your drive from a Minotaur or Teemah block in front, gain low, level past noon. The amp stays mostly clean and the pedal does the lifting. That is how the real thing is played by most of its famous users anyway.
On a Quad Cortex (Dumbell ODS): you already have the non-HRM voicing, which means leave the mids alone. The scoop you might reflexively dial in is the thing this amp is specifically not doing. Push the Master, keep Drive conservative.
On a Fractal unit: you have the actual choice. ODS-100 Ford for the singing, mid-forward lead sound; ODS-100 HRM when you want the scoop and the extra aggression; ODS-100 Clean as a pedal platform. Pick deliberately rather than by whichever loaded first.
And in all three cases: a compressor in front, set gently, is not optional on this voice. Light ratio, slow-ish attack, enough makeup to restore unity. The Overdrive Special's famous sustain is substantially a function of running an amp with enormous headroom hot into a compressed front end. Our compressor settings guide has the starting numbers, and compressor placement in a modeler preset covers why pre-amp is the right slot here and not post.
If you want the fuller treatment of this voice in context, the best Helix amp models for blues and John Mayer's clean tone settings are both built on this same circuit family.
My Honest Read
The amps returning is good news and I'm glad the name didn't die with him. If you have $25,000 of discretionary money and you want to own first-run unit, that's a real asset and I'd appraise it without smirking.
But the useful thing that happened this week is not the price list. It's that a bunch of players are about to go look up "Dumble" for the first time, find the model in their modeler, and assume it's the amp on that website. It isn't — and depending on which box they own, it's either a different Dumble, a specific guy's Dumble, or not a Dumble at all.
Knowing which one you've got is free. The amp is $25,000.
Sources: gearnews, Dumble.com amplifiers page, Guitar World, Fractal Audio forum — ODS-100 (Dumble Overdrive Special) model notes, Neural DSP device list.
