DSM Humboldt Dumblifier Overdrive Special

DSM & Humboldt Dumblifier Overdrive Special is an accurate reproduction of the Dumble Overdrive Special amplifier for a fraction of the price.

This pedal is using analog amplifier modeling technology, and does not only recreates the tone but also the unique compression and touch response that makes every note bloom, sustain, and sing—just like on the original amps.

Unlike digital processors, the pedal responds “punchy compression” and smooth sustain that Dumbles are known for. The pedal is based on a genuine 1970’s Dumble ODS. Other “Dumble-style” pedals are meant to run in front of amplifiers, so the final tone depends mostly on the amp itself. This pedal, however, goes further—it can operate as a complete analog amp replacement with cab-sim and stereo features, or as a two-channel overdrive pedal in front of any rig.

Its TRS outputs with cab-sim bypass make it extraordinarily flexible. With stereo FX loop, stereo reverb, cabinet simulation, and DI outputs, the pedal  is equally at home on stage, in the studio, or in your practice setup.

The pedal replicates the nuances of the Dumble power amp design. The clean Level and RATIO volumes set the input gain into the power amp, so you can adjust the power amp compression and drive. Higher preamp levels and low master gives more compression and vice versa. The presence controls the amount of mid-hi and high frequencies.

The FX loop has a mono send from the amplifier’s output, and a dual return. For mono effects use the left (mono) return. After the FX loop, a stereo reverb effect is applied to the signal. You can control the amount of reverb with the REVERB knob in the front of the pedal, and select 3 types of reverb (Room, Ethereal, and Plate). The Reverb can be switched On and Off with the REV/PAB footswitch when the footswitch function switch is on the “REV” position.

Please note: this pedal is powered by a standard 9 volts power supply (not included).

DSM & Humboldt Dumblifier Overdrive Special demo video