Introduction
The TC Electronic Plethora X1 is a compact multi-effects pedal designed to provide guitarists with a versatile array of TonePrint effects in a streamlined form factor. It features seven dual-effect mini-boards, offering a total of 14 different TonePrint effects. The pedal integrates with the TonePrint app for extensive customization and includes a MASH footswitch for real-time expression.
Product Overview

Figure 1: Front view of the TC Electronic Plethora X1 pedal. The pedal features three large control knobs labeled A, B, and C at the top, along with a smaller MASH button and an LED indicator. Below these, a central display screen shows the active effect (e.g., "CORONA CHORUS"). To the right of the display, a rotary selector with numbers 1 through 7 allows selection of different effect slots. At the bottom, a large MASH footswitch is visible, labeled "TRUE BYPASS". Stereo input and output jacks are located on the sides.
Key Features:
- Multi-effects Guitar Pedal with 7 Boards
- True/Buffered Bypass functionality
- 1-inch Color Display for clear visual feedback
- A/B Switching for dual effect configurations
- Three universal parameters for efficient tone tweaking
- MASH footswitch for real-time expressive control
- USB-C and Bluetooth connectivity for TonePrint app integration
Setup
1. Unpacking and Inspection
Carefully remove the Plethora X1 pedal from its packaging. Inspect the unit for any signs of damage that may have occurred during shipping. Retain the packaging for future transport or storage.
2. Power Connection
The Plethora X1 requires a standard 9V DC power supply (not included), center-negative. Connect the power supply to the DC input jack on the pedal. Ensure the power supply meets the specified voltage and polarity requirements to prevent damage.
3. Audio Connections
- Mono Setup: Connect your instrument (e.g., guitar) to the "STEREO IN MONO" jack using a standard 1/4-inch instrument cable. Connect the "STEREO OUT MONO" jack to your amplifier or next pedal in the signal chain.
- Stereo Setup: For stereo operation, connect your instrument to both the "STEREO IN MONO" and the other input jack (if available, typically labeled "STEREO IN"). Connect both "STEREO OUT MONO" and the other output jack (if available, typically labeled "STEREO OUT") to your stereo amplifier setup or audio interface.
4. Initial Power-On
Once all connections are secure, apply power to the pedal. The display screen will illuminate, and the pedal will boot up, ready for use.
Operating Instructions
1. Basic Controls
- Knobs A, B, C: These three large knobs control the primary parameters of the selected effect. Their specific functions will vary depending on the TonePrint loaded. The display will indicate the parameter being adjusted.
- Rotary Selector (1-7): This knob allows you to select one of the seven available effect mini-boards. Each mini-board can hold a dual-effect configuration.
- MASH Footswitch: This pressure-sensitive footswitch provides real-time expressive control over various effect parameters. Pressing harder on the switch will modulate the assigned parameter.
- Display Screen: The 1-inch color display shows the currently active effect, parameter names, and values, as well as menu navigation.
2. TonePrint Integration
The Plethora X1 is designed to work seamlessly with the TC Electronic TonePrint app, available for PC, tablets, and smartphones. This app allows you to:
- Browse and load artist-curated TonePrints.
- Deeply edit and customize effect parameters.
- Assign parameters to the MASH footswitch.
- Organize and save your custom presets.
Connect to the TonePrint app via USB-C or Bluetooth for full control and customization.
3. A/B Switching
The pedal supports A/B switching, allowing you to toggle between two different effect settings or configurations within a single mini-board. This feature provides enhanced versatility for live performance or quick tonal changes.
4. Saving and Loading Presets
Refer to the on-screen menu and the TonePrint app for detailed instructions on saving your customized effect settings to the pedal's memory and recalling them later. The seven mini-board slots are designed to store your preferred configurations.
Maintenance
1. Cleaning
To clean the pedal, use a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, but ensure no liquid enters the jacks or controls. Avoid abrasive cleaners or solvents.
2. Firmware Updates
TC Electronic periodically releases firmware updates to improve performance, add features, or fix bugs. It is recommended to keep your Plethora X1's firmware up to date. Updates are typically performed via the TonePrint app or a dedicated updater tool connected via USB-C. Check the official TC Electronic website for the latest firmware and instructions.
3. Storage
When not in use for extended periods, store the pedal in a cool, dry place, away from direct sunlight and extreme temperatures. Disconnect all cables, especially the power supply, before storing.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output. | Incorrect cable connections, power issue, pedal bypassed. | Check all audio cables are securely connected. Ensure power supply is connected and functional. Verify the pedal is engaged (not in true bypass mode if applicable). |
| Pedal freezes or becomes unresponsive. | Software glitch, power fluctuation. | Disconnect and reconnect the power supply to restart the pedal. Ensure a stable power source. Check for and install any available firmware updates. |
| Bluetooth connection is spotty or fails. | Interference, distance, app issue, pedal firmware. | Ensure your device is close to the pedal. Close and reopen the TonePrint app. Restart both the pedal and your device. Check for app updates and pedal firmware updates. |
| Unexpected noise or hum. | Ground loop, faulty cables, power supply noise. | Try a different power outlet or isolated power supply. Test with different cables. Ensure proper grounding of all equipment. |
Specifications
- Model: Plethora X1
- Brand: TC Electronic
- Dimensions (L x W x H): 5.25 x 3.8 x 2.3 inches
- Weight: 13.7 ounces
- Bypass: True/Buffered Bypass
- Display: 1-inch Color Display
- Control Parameters: 3 universal parameters
- Connectivity: USB-C, Bluetooth
- Power Requirement: 9V DC, Center-Negative (Power supply not included)
- ASIN: B0DDYFP148
- UPC: 644216648504
Warranty and Support
For detailed warranty information, please refer to the official TC Electronic website or the warranty card included with your product. Warranty terms and conditions may vary by region.
For technical support, product registration, or further assistance, please visit the official TC Electronic support page:





