Introduction
The MXR Duke of Tone Overdrive is a guitar effects pedal designed in collaboration with Analog Man. It is engineered to enhance your guitar's tone by adding warmth and grit while preserving the natural character of your high-end equipment. This pedal offers versatile gain options, allowing for clean boosts, mild overdrive, and richer distortion, making it suitable for various musical applications and stacking with other gain pedals.
Setup
Power Requirements
The Duke of Tone pedal operates on 9V or 18V DC power. For increased headroom and clarity, especially in Boost mode, 18V operation is recommended. Ensure your power supply meets these specifications to prevent damage to the unit.
Connections
- Connect your guitar to the IN jack on the side of the pedal using a standard 1/4-inch instrument cable.
- Connect the OUT jack on the opposite side of the pedal to your amplifier's input or the next pedal in your signal chain using a standard 1/4-inch instrument cable.
- Connect a compatible 9V or 18V DC power supply (not included) to the power input jack.

Figure 1: Input Jack (IN)

Figure 2: Output Jack (OUT)

Figure 3: Power Input Jack
Operating the Pedal
The MXR Duke of Tone features a straightforward control interface designed for ease of use and sonic versatility.

Figure 4: Pedal Controls Overview
Controls
- VOLUME: Adjusts the overall output level of the effect.
- DRIVE: Controls the amount of gain and overdrive. Higher settings increase saturation.
- TONE: Shapes the tonal character, from darker to brighter sounds.
Boost/OD/Distortion Switch
This three-way toggle switch allows you to select between different clipping characteristics:
- BOOST: Provides a clean, vigorous signal boost without significant distortion, ideal for pushing your amplifier or other pedals.
- OD (Overdrive): Adds a touch of grit and compression, offering a classic overdrive sound.
- DIST (Distortion): Delivers a more saturated and thicker distortion, suitable for higher-gain tones.
Internal Treble Trim Pot
For advanced tonal shaping, the pedal includes an internal treble trim pot. This allows users to fine-tune the high-end response, which can be particularly useful for darker amplifiers or to add extra sparkle to your sound. Accessing this trim pot requires opening the pedal enclosure.
True Bypass
The Duke of Tone features true bypass switching, ensuring that your guitar's signal remains unaffected when the pedal is disengaged.
Official Product Videos
MXR Duke Of Tone Overdrive Feat Mike Pierra CSP039
Video 1: This video features Mike Pierra discussing the collaboration between MXR and Analog Man for the Duke of Tone pedal, highlighting its design philosophy and key features.
MXR Duke Of Tone Overdrive Demo Video CSP039
Video 2: A demonstration video showcasing the various sounds and capabilities of the MXR Duke of Tone Overdrive pedal.
Maintenance
To ensure the longevity and optimal performance of your MXR Duke of Tone pedal, follow these maintenance guidelines:
- Keep the pedal clean by wiping it with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Store the pedal in a dry environment, away from extreme temperatures and humidity.
- Disconnect the power supply when the pedal is not in use for extended periods.
- Regularly check all cable connections for secure fit and signs of wear.
Troubleshooting
If you encounter issues with your MXR Duke of Tone pedal, consider the following:
- No Sound: Ensure all cables are securely connected. Verify the power supply is correctly plugged in and providing the correct voltage (9V or 18V DC). Test with different cables and a different power supply if available.
- Unwanted Noise/Hum: Check for proper grounding in your setup. Ensure your power supply is regulated and free from noise. Try isolating the pedal from other electronics.
- Effect Not Engaging: Confirm the footswitch is functioning correctly. If the LED does not light up when pressed, check power and connections.
For persistent issues, refer to the warranty information or contact customer support.
Specifications
| Feature | Specification |
|---|---|
| Brand | MXR |
| Model Name | Duke of Tone Overdrive |
| Model Number | CSP039 |
| Style | Compact |
| Color | Purple |
| Product Dimensions (L x W x H) | 2.13" x 1.63" x 3.63" |
| Item Weight | 8.48 ounces |
| Voltage | 18 Volts (compatible with 9V) |
| Amperage | 9 Milliamps |
| Audio Output Effects | Volume |
| Controls Type | Touch |
| Hardware Interface | 1/4-inch Audio |
| Signal Format | Analog |
| Sound Profile | Warm and Natural |
| UPC | 710137128507 |
Warranty
Dunlop Manufacturing, Inc. will repair or replace, at its discretion, defective workmanship or materials on all new Dunlop electronics directly or through the selling dealer or authorized service technician, for one year from the date of purchase, at no cost to the original purchaser. Repair or replacement parts installed will then be warrantied for the unexpired portion of the original warranty term.
Support
For further assistance, technical support, or warranty claims, please contact Dunlop Manufacturing, Inc. customer service or visit their official website. Ensure you have your product model number (CSP039) and proof of purchase available.





