1. Introduction
The JOYO Bluejay BanTamp Series Mini Amp Head is a compact and portable 20-watt hybrid tube amplifier designed for guitarists. It features a single 12AX7 tube in the preamp section and a solid-state power amp, delivering warm clean tones and rich overdrive suitable for blues and jazz. The amplifier includes a 'Normal' channel that accommodates pedals effectively, an FX loop for time-based effects, and Bluetooth connectivity for audio playback.

Figure 1.1: Front angle view of the JOYO Bluejay BanTamp Mini Amp Head.
2. Safety Information
- Power Supply: Use only the provided DC18V/2A power supply. Using an incorrect power supply can damage the unit and void the warranty.
- Speaker Connection: Always connect the amplifier to a speaker cabinet with the correct impedance (minimum 8Ω) before powering on. Operating without a speaker connected can cause damage to the amplifier.
- Ventilation: Ensure adequate ventilation around the amplifier to prevent overheating. Do not block ventilation openings.
- Moisture: Keep the amplifier away from water or any liquids. Do not operate in damp environments.
- Servicing: Do not attempt to service the unit yourself. Refer all servicing to qualified personnel.
- Volume Levels: Prolonged exposure to high volume levels can cause permanent hearing damage. Use caution when adjusting volume.
3. What's in the Box
Upon unpacking, please verify that all the following items are included:
- JOYO Bluejay BanTamp Series Mini Amp Head
- DC18V/2A Power Supply
- Speaker Cable
- Footswitch (for channel switching)
4. Product Overview
4.1 Front Panel Controls

Figure 4.1: Detailed view of the front panel controls.
- INPUT: 1/4" (6.35mm) jack for connecting your guitar.
- NORMAL/BRIGHT Switch: Toggles between the Normal (clean) channel and the Bright (overdrive) channel.
- BLUETOOTH Button: Activates Bluetooth pairing mode.
- GAIN Knob: Adjusts the input gain level, affecting the amount of overdrive/distortion.
- TONE Knob: Controls the overall tonal character, from darker to brighter.
- VOLUME Knob: Adjusts the overall output volume of the amplifier.
- ON/POWER Switch: Toggles the amplifier power on or off.
4.2 Rear Panel Connections

Figure 4.2: Detailed view of the rear panel connections.
- SPEAKER OUTPUTS (MIN 8Ω): Connects to your speaker cabinet using the provided speaker cable. Ensure the cabinet impedance is 8 ohms or higher.
- DC18V 2.0A: Power input for the DC18V/2A power supply.
- PHONES: 1/8" (3.5mm) headphone output with speaker emulation for silent practice.
- FX LOOP (SEND/RETURN): Allows connection of external effects pedals. Connect the SEND to the input of your effects pedal and the output of your effects pedal to the RETURN.
- FOOTSWITCH: Input for the included footswitch to remotely switch between channels.
5. Setup
- Connect Speaker Cabinet: Using the provided speaker cable, connect the SPEAKER OUTPUT on the rear panel of the BanTamp to your speaker cabinet. Ensure the speaker cabinet has an impedance of 8 ohms or higher.
- Connect Power: Plug the DC18V/2A power supply into the DC18V 2.0A input on the rear panel, then plug the power supply into a suitable wall outlet.
- Connect Guitar: Plug your guitar into the INPUT jack on the front panel.
- Connect Footswitch (Optional): If desired, connect the included footswitch to the FOOTSWITCH input on the rear panel for remote channel switching.
- Connect FX Loop (Optional): If using external effects, connect the SEND jack to the input of your effects pedal and the output of your effects pedal to the RETURN jack.
- Power On: Ensure the VOLUME knob is set to a low level, then press the ON/POWER switch to turn on the amplifier.

Figure 5.1: Example setup with the BanTamp connected to a cabinet and a smartphone via Bluetooth.
6. Operating Instructions
6.1 Basic Operation
- Channel Selection: Use the NORMAL/BRIGHT switch on the front panel or the footswitch to select between the clean (Normal) and overdrive (Bright) channels.
- Adjusting Tone: Use the GAIN, TONE, and VOLUME knobs to shape your sound. Experiment with different settings to find your preferred tone.
- Headphone Use: For silent practice, plug headphones into the PHONES jack on the rear panel. The speaker output will be muted automatically.
6.2 Bluetooth Connectivity
The Bluejay BanTamp features Bluetooth for playing along with backing tracks or learning songs.
- Press the BLUETOOTH button on the front panel. The Bluetooth indicator light will begin to flash.
- On your Bluetooth-enabled device (e.g., smartphone, tablet), search for available devices and select "JOYO BanTamp".
- Once paired, the Bluetooth indicator light will remain solid. You can now play audio from your device through the amplifier.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the amplifier's exterior. Do not use abrasive cleaners or solvents.
- Tube Replacement: The 12AX7 preamp tube has a finite lifespan. If you notice a decrease in performance or unusual noise, the tube may need replacement. This should be performed by a qualified technician.
- Storage: When not in use for extended periods, store the amplifier in a dry, dust-free environment.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from speaker cabinet |
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| No sound from headphones |
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| Bluetooth not pairing |
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| Weak or distorted sound |
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9. Specifications
| Feature | Detail |
|---|---|
| Output Wattage | 20 Watts |
| Preamp Tube | 1 x 12AX7 |
| Power Amp | Solid State |
| Channels | 2 (Normal/Bright) |
| Connectivity | Bluetooth |
| FX Loop | Yes (Send/Return) |
| Headphone Output | Yes (with speaker emulation) |
| Speaker Output Impedance | Min 8Ω |
| Power Supply | DC18V/2A (included) |
| Item Weight | 2.65 pounds (1.2 kg) |
| Product Dimensions | 5.51 x 4.33 x 6.42 inches (14 x 11 x 16.3 cm) |
| Material | Metal |

Figure 9.1: Dimensions of the JOYO Bluejay BanTamp Mini Amp Head.
10. Warranty and Support
JOYO Technology provides a warranty for its products. For specific warranty terms and conditions, please refer to the documentation included with your purchase or visit the official JOYO website. If you encounter any product issues or require technical assistance, please contact the seller directly via your order details for the best service.
Manufacturer: JOYO Technology Co., Ltd.
Website: www.joyoaudio.com



