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This late 1980's Dumble Overdrive Special #140 is a commanding example of the legendary amplifier designs created by Alexander Dumble. Built during the era when the Overdrive Special had fully evolved into a refined, harmonically rich performance machine, #140 embodies the rare balance of explosive power, dynamic touch sensitivity, and smooth, vocal overdrive that defines the Dumble legacy.
At its core, this amplifier delivers 100 watts of power, with a practical 50/100-watt switch that allows players to tailor headroom and response to the venue or recording environment. In full 100-watt mode, the amp offers massive clean headroom with piano-like lows, articulate mids, and shimmering highs that remain composed even at high volumes. Switching down to 50 watts introduces earlier breakup, softer attack compression, and a more elastic feel under the fingers—ideal for expressive lead work and studio applications.
The Overdrive Special #140 runs on a set of 6L6 power tubes, contributing to its bold American-voiced foundation. These tubes provide tight low-end authority, open top-end clarity, and a muscular midrange punch that allows the amplifier to sit perfectly in a band mix. Clean tones bloom with depth and dimension, while the overdrive channel delivers the signature Dumble character: smooth, singing sustain with layered harmonic complexity and remarkable note separation.
A defining feature of #140 is its 4-Way Rotary Switch, which dramatically expands tonal versatility. This switch allows the player to reshape the amp’s voicing and feel, effectively offering multiple personalities within a single chassis. From glassy, scooped cleans to thicker mid-forward textures, and from articulate rhythm crunch to saturated lead tones, the rotary control fine-tunes the amp’s response and harmonic contour without sacrificing clarity or dynamic sensitivity.
What truly sets the Dumble Overdrive Special #140 apart is its responsiveness. The amplifier reacts instantly to picking dynamics and guitar volume adjustments, transitioning seamlessly from pristine clean to rich overdrive without the need for pedals. Each note carries a three-dimensional quality—clear at the attack, blooming through the sustain, and resolving with harmonic sweetness.
Rare, meticulously crafted, and sonically authoritative, the Dumble Overdrive Special #140 stands as a testament to the uncompromising design philosophy of Alexander Dumble. With its 100-watt power platform, 6L6-driven output section, switchable wattage flexibility, and versatile 4-way rotary voicing, it remains a benchmark for expressive, high-headroom tube amplification and one of the most coveted amplifiers ever built.
Other specifications include:
- 100 Watts (50/100 Switch)
- 6L6's
- 4-Way Rotary Switch
- Dumble Book not included
- Built in the Mid-to-Late 1980's
- #0140
For more information about this Dumble amplifier, please contact us.
This amp is available for in-store pickup only.
We will not ship this amp due to it's value. Please contact us to arrange transit options.
- Manufacturer
- Dumble
- Series
- Overdrive Special
- Model
- Overdrive Special
- Condition
- Excellent
Product Images
Product Videos
Downloads
Description
This late 1980's Dumble Overdrive Special #140 is a commanding example of the legendary amplifier designs created by Alexander Dumble. Built during the era when the Overdrive Special had fully evolved into a refined, harmonically rich performance machine, #140 embodies the rare balance of explosive power, dynamic touch sensitivity, and smooth, vocal overdrive that defines the Dumble legacy.
At its core, this amplifier delivers 100 watts of power, with a practical 50/100-watt switch that allows players to tailor headroom and response to the venue or recording environment. In full 100-watt mode, the amp offers massive clean headroom with piano-like lows, articulate mids, and shimmering highs that remain composed even at high volumes. Switching down to 50 watts introduces earlier breakup, softer attack compression, and a more elastic feel under the fingers—ideal for expressive lead work and studio applications.
The Overdrive Special #140 runs on a set of 6L6 power tubes, contributing to its bold American-voiced foundation. These tubes provide tight low-end authority, open top-end clarity, and a muscular midrange punch that allows the amplifier to sit perfectly in a band mix. Clean tones bloom with depth and dimension, while the overdrive channel delivers the signature Dumble character: smooth, singing sustain with layered harmonic complexity and remarkable note separation.
A defining feature of #140 is its 4-Way Rotary Switch, which dramatically expands tonal versatility. This switch allows the player to reshape the amp’s voicing and feel, effectively offering multiple personalities within a single chassis. From glassy, scooped cleans to thicker mid-forward textures, and from articulate rhythm crunch to saturated lead tones, the rotary control fine-tunes the amp’s response and harmonic contour without sacrificing clarity or dynamic sensitivity.
What truly sets the Dumble Overdrive Special #140 apart is its responsiveness. The amplifier reacts instantly to picking dynamics and guitar volume adjustments, transitioning seamlessly from pristine clean to rich overdrive without the need for pedals. Each note carries a three-dimensional quality—clear at the attack, blooming through the sustain, and resolving with harmonic sweetness.
Rare, meticulously crafted, and sonically authoritative, the Dumble Overdrive Special #140 stands as a testament to the uncompromising design philosophy of Alexander Dumble. With its 100-watt power platform, 6L6-driven output section, switchable wattage flexibility, and versatile 4-way rotary voicing, it remains a benchmark for expressive, high-headroom tube amplification and one of the most coveted amplifiers ever built.
Other specifications include:
- 100 Watts (50/100 Switch)
- 6L6's
- 4-Way Rotary Switch
- Dumble Book not included
- Built in the Mid-to-Late 1980's
- #0140
For more information about this Dumble amplifier, please contact us.
This amp is available for in-store pickup only.
We will not ship this amp due to it's value. Please contact us to arrange transit options.
- Manufacturer
- Dumble
- Series
- Overdrive Special
- Model
- Overdrive Special
- Condition
- Excellent
Media Gallery
Downloads
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True Product Images
Yes, this is the actual guitar you’re looking at – not a generic stock photo! We take the time to individually photograph each and every guitar we sell so that you know exactly what you’re getting. From the grain of the wood to the unique finish and subtle character marks, what you see in the photo is the very guitar that will be shipped to your door. No surprises, no guesswork – just full transparency and confidence in your purchase.
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