Introduction
This manual provides essential information for the safe and effective use of your Yamaha THR10II WL Wireless Desktop Guitar Amplifier. Please read this manual thoroughly before use to ensure proper operation and to maximize your experience with this versatile amplifier. Keep this manual in a safe place for future reference.
Product Overview
The Yamaha THR10II WL is a compact, wireless desktop guitar amplifier designed to deliver realistic tube-amp tones and feel in a portable package. It features a wide range of amp models, effects, and connectivity options, making it ideal for practice, recording, and casual playing.

Figure 1: Front view of the Yamaha THR10II WL Wireless Desktop Guitar Amplifier.
Key Features:
- Realistic tube-amp tones and feel with essential effects.
- 15 Guitar amp models, 3 bass amp models, 3 mic models for acoustic-electrics, and flat modes for other instruments.
- Bluetooth support for audio playback and editing via the THR Remote app.
- Built-in wireless receiver compatible with the optional Line 6 Relay G10T transmitter.
- Built-in rechargeable battery for portable use.
- Hi-fi audio playback with extended stereo technology.
- Plug-and-play USB connectivity for recording and playback.
- THR Remote editor/librarian app for desktop and mobile devices.
Setup
1. Powering On the Amplifier
The THR10II WL can be powered using the included AC adapter or its built-in rechargeable battery.
- AC Power: Connect the supplied power adapter to the 15V DC IN jack on the rear panel and plug it into a wall outlet.
- Battery Power: Ensure the internal battery is charged. The battery indicator lights will show the charge level.
2. Connecting Your Instrument
Connect your guitar or bass to the INPUT jack on the right side of the amplifier using a standard 1/4-inch instrument cable. For wireless operation, insert a compatible Line 6 Relay G10T transmitter (sold separately) into the INPUT jack. The amplifier will automatically pair with the transmitter.
3. Connecting to the THR Remote App (Bluetooth)
The THR Remote app allows for deeper editing of amp models and effects. To connect:
- Turn on the THR10II WL amplifier.
- Enable Bluetooth on your mobile device or computer.
- Open the THR Remote app. The app should detect and connect to your amplifier.
- For audio playback, pair your device with the amplifier via your device's Bluetooth settings.
4. USB Audio Connection
For recording or playback through your computer, connect the amplifier to your computer using a USB cable (Type B port on the amp). The THR10II WL functions as a USB audio interface, allowing direct recording of your guitar signal and playback of computer audio through the amplifier's speakers.
Operating Instructions

Figure 2: Top panel controls of the Yamaha THR10II WL.
Controls Overview:
- AMP Knob: Selects the amplifier type (CLEAN, CRUNCH, LEAD, HI GAIN, SPECIAL) and other modes (BASS, ACO, FLAT).
- GAIN Knob: Adjusts the input gain for the selected amp model.
- MASTER Knob: Controls the overall output volume of the amplifier.
- BASS, MIDDLE, TREBLE Knobs: Adjust the equalization (EQ) for your tone.
- EFFECT Knob: Selects and adjusts various modulation effects (CHORUS, TREMOLO, PHASER, ECHO).
- ECHO/REV Knob: Selects and adjusts delay and reverb effects (ECHO, SPRING, HALL).
- GUITAR Knob: Adjusts the volume of your guitar relative to other audio sources.
- AUDIO Knob: Adjusts the volume of audio played via Bluetooth or AUX input.
- AUX Input: Connect external audio players via a 3.5mm stereo mini-jack.
- PHONES Output: Connect headphones for silent practice via a 3.5mm stereo mini-jack.
- USER MEMORY Buttons (1-5): Save and recall your favorite settings.
- TAP TIME/HOLD TUNER Button: Tap to set delay time or hold to activate the built-in tuner.
Using Amp Models and Effects:
Rotate the AMP knob to select your desired amplifier type. Experiment with the GAIN, MASTER, and EQ knobs to shape your core tone. Use the EFFECT and ECHO/REV knobs to add spatial and modulation effects. For more detailed control and access to additional parameters, utilize the THR Remote app.
Video 1: Official Yamaha overview of the THR II Desktop Amp, demonstrating its features and sound capabilities.
Maintenance
Cleaning:
Wipe the amplifier's exterior with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or waxes, as these can damage the finish. Do not spray liquids directly onto the amplifier.
Battery Care:
To prolong the life of the built-in rechargeable battery, avoid fully discharging it frequently. If storing the amplifier for an extended period, ensure the battery is charged to approximately 50% and recharge it every six months.
Storage:
Store the amplifier in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity. Ensure it is protected from dust and physical impact.
Troubleshooting
No Sound:
- Check that the amplifier is powered on and the volume knobs (MASTER, GUITAR, AUDIO) are turned up.
- Ensure your instrument cable is securely connected to both the guitar and the amplifier.
- If using a wireless transmitter, confirm it is charged and properly paired with the amplifier.
- If using headphones, ensure they are fully plugged into the PHONES jack.
Bluetooth Connectivity Issues:
- Verify Bluetooth is enabled on both the amplifier and your mobile device.
- Ensure the amplifier is not already paired with another device.
- Try restarting both the amplifier and your mobile device.
- If using the THR Remote app, ensure it is the latest version.
Distorted Sound:
- Reduce the GAIN knob setting.
- Lower the volume of your guitar or the input level from your audio source.
- Check for damaged cables or connections.
If problems persist, consult the official Yamaha support resources or an authorized service center.
Specifications

Figure 3: Dimensions of the Yamaha THR10II WL amplifier.
| Specification | Detail |
|---|---|
| Brand | Yamaha |
| Model Name | THR10II |
| Model Number | THR10II WL |
| Output Wattage | 20 Watts |
| Speaker Size | 8 Centimeters |
| Power Source | Battery Powered, Corded Electric, Rechargeable |
| Item Dimensions (D x W x H) | 5.5"D x 14.49"W x 7.2"H |
| Item Weight | 4.4 Kilograms |
| Connector Type | Wireless |
| Amplifier Type | Tube (modeling) |
| GTIN | 889025123860 |
| UPC | 889025123860 |
Warranty and Support
Warranty Information:
The Yamaha THR10II WL comes with a 1-year manufacturer warranty from Yamaha Corporation of America. This warranty applies only to products purchased from an authorized Yamaha retailer in the fifty United States (including the District of Columbia) and used in this area. For detailed terms and conditions, please review the Yamaha limited warranty for this product on the official Yamaha website.
Customer Support:
For further assistance, technical support, or service inquiries, please contact Yamaha customer support or visit their official website. Authorized Yamaha retailers are also equipped to provide sales and service support.





