DSM & Humboldt | Dumblifier Overdrive Special | Dual Channel Stereo Amp | w/ Reverbs | Based on ODS Dumble Amp | PRE-ORDER

PRE-ORDER (1st Batch shipping Mid-January)

DSM Humboldt DUMBLIFIER Overdrive Special is the inaugural release in the new ESSENTIALS series, a product line dedicated to faithfully recreating the sound of mythical and historically significant guitar amplifiers. These are designs that defined entire generations of guitar tones, and the ESSENTIALS series aims to preserve both their sonic identity and the playing experience that made them legendary.

The Dumblifier is built around a deep and meticulous study of the 1970s Dumble Overdrive Special. DSM Humboldt analysed original schematics, archived recordings, video references, and spent extensive time testing real Dumble amplifiers. Every gain stage, tone-shaping element, and dynamic interaction was examined and recreated with the goal of capturing the true behaviour of the original circuits.

Although each original Dumble amp was custom-built for its owner, they shared a common design philosophy. This philosophy produced a uniquely compressed yet punchy response, exceptional touch sensitivity, and a dynamic feel that reacts instantly to the player. The Dumblifier preserves this core character, translating it into a compact, fully analog format without sacrificing authenticity.

In terms of tone, the Overdrive Special is exceptionally versatile. The Clean channel delivers pristine, articulate, and punchy tones with plenty of headroom, while pushing the levels introduces smooth, fat clipping. The Overdrive channel is rich and silky, with every note blooming naturally and responding directly to picking dynamics and playing style.

What truly sets the Dumblifier apart is the feel. Fast note recovery, a strong initial attack, and long, singing sustain invite you to hold notes and shape harmonics with ease. This inspiring response encourages expressive playing and makes it easy to achieve infinite sustain. The Dumblifier doesn’t just recreate the sound of a legendary amplifier - it recreates the experience of playing one.

• Dual-channel design with Clean and Overdrive channels in series

• Shared EQ and preamp tone switches for both channels

• Overdrive channel with Gain and Ratio controls for level balancing

• PAB (Preamp Boost) bypasses the tone stack for approximately +10dB gain

• Bright switch enhances high frequencies at lower Clean levels

• Mid Boost switch adds body and low-mid presence

• Rock / Jazz switch changes tone stack behaviour

• Authentic Dumble-style power amp modelling with adjustable compression

• Presence control for fine-tuning brightness across different amplifiers and setups

• Stereo FX loop with mono send and stereo return

• Stereo reverb with Room, Ethereal, and Plate modes

• Independent stereo cabinet simulation for left and right channels

• Multiple speaker and cabinet combinations selectable

• JFET input boost with low and high gain options

• Footswitches for Bypass, Channel select, and Reverb / PAB control

• Headphone output with dedicated level control

• 3.5mm stereo Aux input with routing selection

• Stereo DI outputs with cabinet simulation always active

• TR outputs with selectable cabinet simulation on/off for amp, FRFR, or recording use