1. Introduction
The Zoom MS-70CDR MultiStomp Chorus / Delay / Reverb Pedal is a versatile multi-effects unit designed for guitarists and other musicians. It combines the power of a rack-mounted multi-effects device into a compact stompbox design, offering a wide array of chorus, delay, and reverb effects. This manual provides essential information for setting up, operating, and maintaining your MS-70CDR pedal.
2. Key Features
- Easy-to-use interface includes LCD, footswitch, and analog-style cursor keys/parameter knobs.
- 86 effects types (16 choruses, 26 delays, 29 reverbs, 15 various flangers/tremolos/vibratos/phases/modulators) can be used in any combination.
- AC (adapter sold separately) and USB bus powered.
- Stereo input and output jacks for versatile connectivity.
- Onboard chromatic tuner with various tuning options.
- Zoom's noise reduction algorithm (ZNR) for clear sound.
- 50 patch memories for storing custom effect chains.
3. Setup
3.1 Powering the Unit
The MS-70CDR can be powered in several ways:
- AA Batteries: The unit operates on two AA batteries (included). Open the battery compartment on the underside of the pedal and insert the batteries, ensuring correct polarity.
- AC Adapter: For extended use, an optional 9V DC, 500mA AC adapter (sold separately) can be connected to the DC9V 500mA input jack.
- USB Bus Power: The pedal can also be powered via USB by connecting it to a computer or compatible USB power source using the USB port.
The unit powers up automatically when a connector is inserted into its input jack.

Figure 3.1: Rear view of the MS-70CDR, highlighting the USB and DC9V power inputs.
3.2 Connecting Your Instrument
Connect your instrument to the input jack(s) on the MS-70CDR. The pedal supports both mono and stereo inputs. Use the L (MONO) input for mono signals. For stereo signals, use both L (MONO) and R inputs.

Figure 3.2: Front view of the MS-70CDR, showing the L (MONO) and R input/output jacks.
Connect the output jack(s) of the MS-70CDR to your amplifier, mixer, or audio interface. Dual line-level output jacks allow for stereo recording.
4. Operating the MS-70CDR
4.1 User Interface
The MS-70CDR features an LCD screen, a footswitch, and three parameter knobs along with cursor keys for navigation. This intuitive design allows for easy navigation and parameter adjustment.

Figure 4.1: The MS-70CDR's user interface with LCD and controls.
4.2 Effect Chaining and Patch Memories
The pedal allows you to use up to six effects simultaneously and arrange them in any order you desire. You can also bring individual effects in and out of the chain as needed. The MS-70CDR has 50 patch memories, with the first 30 preloaded with useful factory settings. You can store your custom edited and chained multi-effects in these memories.
4.3 Chromatic Tuner
An onboard chromatic tuner supports a variety of standard guitar tunings, including drop tunings. You can choose to bypass all effects during tuning or mute the output for silent tuning.
4.4 Noise Reduction (ZNR)
The MS-70CDR incorporates Zoom's Noise Reduction (ZNR) algorithm, designed to remove noise during pauses while preserving your instrument's natural tone.
4.5 Tap Tempo
The Tap Tempo feature allows you to set the tempo for time-based effects by tapping the footswitch.
4.6 Official Product Overview Video
Video 4.2: An official overview of the Zoom MS-70CDR MultiStomp Guitar Effects Pedal, detailing its features and capabilities.
5. Maintenance
To ensure the longevity and optimal performance of your MS-70CDR pedal, follow these maintenance guidelines:
- Keep the unit clean by wiping it with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Protect the unit from extreme temperatures, humidity, and direct sunlight.
- Avoid dropping the unit or subjecting it to strong impacts.
- Remove batteries if the unit will not be used for an extended period to prevent leakage.
6. Troubleshooting
If you encounter issues with your MS-70CDR, consider the following common troubleshooting steps:
- No Power: Check battery installation and charge level. If using an AC adapter, ensure it is correctly connected and providing the specified voltage (9V DC).
- No Sound: Verify all cable connections (instrument to input, output to amplifier/mixer). Check the volume levels on your instrument, pedal, and amplifier. Ensure the tuner is not active and muting the output.
- Unexpected Sound/Noise: Check for loose connections. Ensure proper grounding. If using multiple effects, try isolating them to identify the source of the issue. The ZNR function can help reduce unwanted noise.
- Pedal Not Responding: Try restarting the unit by disconnecting and reconnecting the power source. If issues persist, a factory reset might be necessary (refer to the full user manual for instructions).
7. Specifications
| Specification | Value |
|---|---|
| Item Weight | 12.6 ounces |
| Product Dimensions | 6.75 x 3.75 x 3 inches |
| Item Model Number | ZMS70CDR |
| Batteries | 2 AA batteries required (included) |
| Hardware Interface | USB |
| Signal Format | Analog |
| Power Source | Corded Electric |
| Voltage | 15 Volts |
| Amperage | 300 Milliamps |
8. Warranty and Support
For detailed warranty information and further support, please refer to the official resources:
- User Manual (PDF): Download Official User Manual
- Zoom Store: Visit the Official Zoom Store on Amazon
