The CNZ Audio Dumbled Drive is a compact overdrive pedal aimed at players who want what the maker calls "classic, boutique overdrive tones at a budget-friendly price." It is part of CNZ Audio's Vintage Series, and the maker describes it as a customer favorite in its overdrive line1. Like other overdrives, it sits in the same family of pedals covered on the site's Overdrive Pedals page, alongside related CNZ Audio drives such as the CNZ Audio SOD-20 and the CNZ Audio VBL-20 Bluesy.
Name and intent
The pedal's name is a nod to the boutique amplifier builder Alexander "Howard" Dumble. CNZ Audio describes it as "Named in homage to boutique amp legend, Alexander 'Howard' Dumble"1. The maker's stated goal for the pedal is direct: "Our goal with this pedal is to provide classic, boutique overdrive tones at a budget-friendly price"1.
It is worth knowing what the name does and does not promise. As gearnews.com notes in its guide to Dumble-style drives, "All Dumble amplifiers are built specifically to suit the needs of its user. So no two Dumbles are ever alike, even if they share the same model name"2. In other words, there is no single Dumble sound for any pedal to reproduce, and Dumble-style drives are best understood as a family of boutique-flavored overdrives rather than copies of one amp.
Controls and hardware
The Dumbled Drive keeps its control layout simple. The maker highlights the gain control as the main shaping tool: "Perfect your amount of distortion with the Gain Adjustment"1. The pedal is built into a solid aluminum housing on all sides with a firm foot switch, and it uses standard 1/4 inch input and output connectors1.
| Specification | Value |
|---|---|
| Input impedance | 470K ohms1 |
| Output impedance | 1K ohms1 |
| Connectors | 1/4 inch input and output1 |
| Housing | Solid aluminum, all sides1 |
| Foot switch | Firm foot switch1 |
| Dimensions | 3.75 L x 1.77 W x 1.9 H inches1 |
| Weight | .53 lbs (including box)1 |
Power and bypass
The pedal runs from a 9V DC input with the center pin negative and the outside positive, drawing 10 mA1. That low current draw is easy going for any standard pedalboard supply, and the small footprint and light weight make it a straightforward fit on a crowded board.
The 9V DC input is center negative, outside positive. A supply with reversed polarity will not power the pedal correctly, so match the polarity of your daisy chain or isolated supply before plugging in1.
When the pedal is off, True Bypass takes the circuit out of the signal path. CNZ Audio puts it plainly: "True Bypass provides transparent tone when off"1.
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Questions
Is the CNZ Audio Dumbled Drive true bypass?
Yes. CNZ Audio specifies True Bypass for the Dumbled Drive, which the maker says provides transparent tone when the pedal is switched off. With true bypass, the pedal's circuit is removed from the signal path entirely when it is not engaged, so your guitar's signal passes straight through to the output.
Does the CNZ Audio Dumbled Drive sound like a Dumble amp?
The pedal is named in homage to Alexander 'Howard' Dumble, but no pedal can be said to copy a Dumble amp outright. All Dumble amplifiers are built specifically to suit the needs of the user, so no two Dumbles are ever alike even if they share the same model name, as gearnews.com notes in its guide to Dumble-style drives.
What power supply does the CNZ Dumbled Drive need?
The Dumbled Drive needs a 9V DC supply with the center pin negative and the outside positive, drawing 10 mA. That low current draw means almost any standard 9V pedal supply can run it, but the center-negative polarity matters: a supply with the wrong polarity will not power the pedal correctly.
Sources (2)
- VDU-20 | Dumbled Drive Overdrive Pedal | CNZ Audio, CNZ Audio
- Best Dumble-style pedals: 8 drive effects to emulate THE boutique amp, gearnews.com, 2020-07-03
