Music / Instruments
User Manual for Electro-Harmonix East River Drive Overdrive Pedal
Quick guide for the Electro-Harmonix East River Drive overdrive pedal. Learn about controls, power requirements, battery replacement, and technical specifications.
Table of contents
Quick guide from the manual
The East River Drive is a compact overdrive pedal designed to maintain your guitar's character while adding grit. It features true bypass switching to ensure your signal remains unaffected when the pedal is off.
Controls
- DRIVE Knob: Adjusts the input gain. Turning clockwise increases the overdrive from a mild edge to classic distortion.
- TONE Knob: Shapes the frequency response. Turning clockwise emphasizes treble, while counter-clockwise emphasizes bass.
- VOL Knob: Controls the overall output volume of the pedal.
- FOOTSWITCH and LED: Toggles the effect on and off. The LED lights up when the effect is engaged.
Connections
- INPUT jack: Connect your guitar or instrument cable here. Input impedance is 375kΩ.
- AMP jack: Connect your amplifier or next pedal in the chain here. Output impedance is 250Ω.
Power and Battery
The pedal can be powered by a 9V battery or an optional 9VDC AC adapter. If using an adapter, it must be center negative and capable of delivering at least 25mA. The pedal draws 6mA of current at 9VDC.
Changing the battery: To replace the 9V battery, remove the four screws on the bottom of the enclosure. Carefully remove the bottom plate. Do not touch the circuit board while the plate is off to avoid damaging components.
Practical help
Common problems
Pedal does not turn on or LED does not light up
Ensure the 9V battery is fresh or the AC adapter is properly connected and meets the 9VDC center negative requirement.
No sound output
Check that the input and output cables are securely connected to the INPUT and AMP jacks respectively.
Before use
- Ensure you have a 9V battery or a compatible 9VDC AC adapter.
- Verify the AC adapter is center negative.
- Connect your guitar to the INPUT jack.
- Connect your amplifier to the AMP jack.
Specs in practice
- Input Impedance
- 375kΩ - affects how the pedal interacts with your guitar pickups.
- Output Impedance
- 250Ω - ensures signal integrity to your amplifier.
- Current Draw
- 6mA - the amount of power the pedal consumes at 9VDC.
Model compatibility
- Requires 9VDC power supply.
- AC adapter must be center negative.
- Adapter must be capable of delivering at least 25mA.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.