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Synergy OS Dumble Overdrive Special 2-Channel Preamp Moduletrue true
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Gold Coverage Protection
Protect your gear
Gold Coverage Protection
Gold Coverage goes above and beyond the manufacturer's warranty to protect your gear from unexpected breakdowns, accidental damage from handling and failures. This plan covers your product for one, two, three or up to five years from your date of purchase, costs just pennies per day and gives you a complete "no-worry" solution for protecting your investment.
Gold Coverage Includes:
- Unexpected and unintentional spills, drops and cracks
- Normal wear and tear
- Power surges
- Dust, internal heat and humidity
Other plan features include:
- For products over $200, No Lemon Policy applies. If it fails for the same defect 3 times, it is replaced on the 4th breakdown. (Does not apply to failures due to drops, spills, and cracks)
- For products under $200 experiencing the above failures, a Musician's Friend gift card will be issued for the full price of the product + tax.
- Shipping fees covered if required for repair or replacement
- Plans are transferable in the event merchandise is sold
- Plans are renewable on new gear
*Limitations and exclusions apply. See terms and conditions (Opens in new window) for program details
Term for New Gear begins on date of purchase but does not replace the store return policy or manufacturer coverage.
Get the legendary tone of the Dumble Overdrive Special in a two-channel preamp.
No two Dumbles are the same, but it’s the Dumble Overdrive Special that continues to reign as the man’s pinnacle design. The amplifiers boast a unique sound and feel that is praised for its ability to enhance and uncover every nuance of a player’s technique and tone. It is this ability that has earned the amp a reputation for being one of the finest and most revered ever made.
Because these mythical amps are extremely hard to come by, we created the Synergy OS preamp module as our tribute to its iconic sound. The OS module packs the Dumble personality and user experience in a compact format, providing affordability and convenience that the original can never match.
Across the front panel, the OS features the same basic controls as the Overdrive Special amplifier. Dual footswitchable channels enable switching between the unique Dumble clean with its mid-forward clarity to the fabled smooth, singing sustain that gives the Overdrive Special its name. You’ll also find Bright, Deep and Rock/Jazz switches that, along with the 3-band EQ, will tailor your tone while always retaining the Dumble character. Finally, a master presence control adds just the right amount of clarity to the module’s OD mode.
While nothing sounds or feels exactly like a Dumble, with the Synergy OS preamp module, you can possess the essence of one of the finest amps in the world alongside all of the other classic tones available from the Synergy system.
Dumble is a trademark of Howard Alexander DBA Dumble Amplifier. While Synergy’s OS module pays tribute to the original, it is not associated or approved by, or sponsored by Howard Alexander or his Dumble brand.
Cathode Select Switch
This three-position switch allows you to configure the input tube bass response to match the original circuit of the selected module. This will affect the feel and tightness. Each amp designer has a specific combination of components that make up their input tube circuit. Synergy selected the three most popular combinations which you can access with this switch. The module will come preset to Synergy's preferred setting which for the OS module is position two.
Call or click to order today!
- Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded).
- Orders placed before 3 p.m. ET usually ship the same business day.
Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.
Our Gear Advisers are available to guide you through your entire shopping experience. Call or Chat for expert advice and to hear the latest deals.