Overdrive Special-Inspired Overdrive and Amplifier Solution
The DSM Humboldt Dumblifier Overdrive Special is an advanced analog amplifier pedal inspired by the legendary 1970s Dumble Overdrive Special, and the first release in DSM Humboldt’s new ESSENTIALS series. It was developed through extensive analysis of real ODS amplifiers, capturing not only the tonal character, but also the dynamic response and feel that made these amps iconic.
The Dumblifier features a two-channel Clean and Overdrive architecture, with the clean channel feeding the overdrive stage just like the original amp. A genuine PAB (Preamp Boost) bypasses the tone stack for added gain and punch, while Rock and Jazz tone stack modes allow you to tailor the EQ response from classic FMV behavior to a wider-range Baxandall-style circuit. A modeled power amp section adds compression, sustain, and touch sensitivity, making the pedal feel responsive and expressive under the fingers.
Designed as a complete amplifier solution, the Dumblifier includes a stereo FX loop, stereo reverb, and stereo cabinet simulation, allowing it to be used straight into a PA, recording interface, FRFR system, power amp, or traditional guitar amp. Flexible routing, DI outputs, headphone monitoring, and an aux input make it equally at home on stage, in the studio, or for silent practice.
From articulate clean tones to silky overdrive that blooms effortlessly into sustain, the Dumblifier delivers the feel and responsiveness players associate with iconic Overdrive Special recordings from artists such as Robben Ford, Michael Landau, Joe Bonamassa, and John Mayer.
DSM Humboldt Dumblifier Overdrive Special Features
• Two-channel CLEAN and OVERDRIVE design with shared EQ
• PAB (Preamp Boost) with tone stack bypass
• Rock / Jazz tone stack switch
• Power amp section with master level and presence control
• Stereo FX loop with mono compatibility
• Stereo reverb with three reverb types
• Stereo cabinet simulation with selectable speaker and cabinet types
• Switchable input boost for low or high output pickups
• Three footswitches: Bypass, Channel, and Rev / PAB
• Stereo DI outputs and TR outputs with selectable cab simulation
• Headphone output with level control and 3.5 mm Aux input
• Power: 9–12V DC
• Current Draw: 150 mA
Specs
| Type | Speaker Simulator, Overdrive |
| Condition | New |
| Power | 9-12V DC |
| Manufacturer Warranty | 2 years |
| Country of Origin | Chile |
FREE SHIPPING
- Free shipping within Canada.
- Free shipping to the USA.
- Free shipping on international orders over 520$.
Visit the Shipping page for more.
Fast Delivery
- Canada : 1 - 2 business days
- USA : 1 - 2 business days
- Rest of the world: 3 - 5 business days.
Hassle-Free Returns
You have 45 days to test your new gear. If you choose to return it, we’ll send a full refund. It’s that simple: no bogus restocking fees or charges.
Visit the Returns page for more.
Frequently Asked Questions
-
How can I tell if an item is in stock? +
Each product page shows an availability status.
• In stock items are ready to ship.
• Out of stock items are currently unavailable.
You can enter your email to be notified when an item is back in stock.
-
Where are you located? +
We’re based in Blainville, Quebec, Canada.
-
When will my order ship? +
Orders placed before 12 PM EST ship the same business day.
Tracking details are sent shortly after purchase.
-
How much does shipping cost? +
Most orders ship free to Canada and the US.
International orders ship free on purchases over $520 CAD.
-
Which shipping methods do you use? +
Orders ship via UPS Expedited by default.
For faster delivery, you can select UPS Express Saver at checkout.
-
How long does shipping take? +
Typical delivery times are:
• Canada: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• USA: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• International: 3–5 business days with UPS Expedited, 2–3 business days with UPS Express Saver
-
Which payment methods do you accept? +
We accept all major credit cards and PayPal.
Financing options are available through Klarna and RBC PayPlan.
-
Do Canadian customers pay sales tax? +
Yes. Sales tax is applied based on your province of residence:
• Alberta: 5%
• British Columbia: 5%
• Manitoba: 5%
• New Brunswick: 15%
• Newfoundland and Labrador: 15%
• Northwest Territories: 5%
• Nova Scotia: 14%
• Nunavut: 5%
• Ontario: 13%
• Prince Edward Island: 15%
• Quebec: 14.975%
• Saskatchewan: 5%
• Yukon: 5%
-
Do USA customers pay import fees? +
Yes. Starting August 29, 2025, all US-bound shipments will be subject to duties, taxes, and brokerage fees.
These charges are determined by US Customs and collected by UPS at delivery.
-
Do international customers pay import fees? +
Yes. International shipments may be subject to duties and taxes.
These charges are set by the destination country’s customs authority and collected by UPS at delivery.