Introduction
The JOYO JAM Buddy II is an all-in-one portable electric guitar amplifier and effects pedal, designed for guitarists seeking versatility and portability. This compact unit features dual 2-inch full-range speakers, a bass radiator, 14 amp models, 9 built-in effects, a 3-band EQ, 36 drum patterns, a 30-second looper, OTG recording, and Bluetooth connectivity. This manual provides essential information for setup, operation, maintenance, and troubleshooting to ensure optimal performance of your JAM Buddy II.
What's in the Box
- JAM Buddy II Electric Guitar Amplifier
- Metal phone mount
- USB Type-C cable
- Owner's manual
Setup
Powering On/Off & Charging
To power on the JAM Buddy II, locate the power switch and flip it to the 'ON' position. The device features a built-in rechargeable battery. Connect the provided USB Type-C cable to the device and a compatible power source (not included) for charging. The power LED indicates charging status. The unit offers up to 5 hours of playtime on a full 3-hour charge and auto powers off after 20 minutes of inactivity.
Connecting Your Guitar
Plug your electric guitar into the 6.35mm mono input jack located on the side of the unit. Ensure the cable is securely connected.
Bluetooth Pairing
To connect a Bluetooth-capable device for backing tracks, flip the Bluetooth switch to 'ON'. The Bluetooth LED will indicate pairing mode. On your device (phone, tablet), search for 'JAM BUDDY' in the Bluetooth settings and connect. The Bluetooth volume is controlled independently from your device.
Video: JAM Buddy II Complete Controls & Setup Guide. This video demonstrates how to set up and use the JOYO JAM Buddy II, including connecting instruments and navigating controls.
Operating Instructions
Controls Overview
The JAM Buddy II features a new LED display and multi-function knob (press & rotate) for intuitive control. Knobs include: Delay Mix, F.Back, Time, Master Volume, Tone, Drive Gain, and Clean Gain. Switches control Power, Bluetooth, and Drive Mode (Classic/High Gain). Footswitches allow switching between channels and controlling the looper.

Image: Front panel of the JOYO JAM Buddy II, showing all control knobs, switches, and footswitches.
Amp Models & Effects
The unit offers 14 crafted amp head models, ranging from clean Jazz and Blues tones to high-gain Metal. It also includes 9 built-in effects: Modulation, Delay, and Reverb. Shape your tone using the dedicated 3-band EQ and GAIN controls. Three independent channels (Clean, Rhythm, Lead) cover various tonal requirements.

Image: Close-up of the JOYO JAM Buddy II display showing amp model selection and EQ settings.
Drum Machine, Looper & Memory
Enhance your practice with the new 36-pattern drum machine and a 30-second looper. The one-tap memory function allows instant saving of custom tone and drum settings across all 3 channels. A built-in tuner function assists with accurate tuning.
OTG Direct Recording & Bluetooth Playback
The built-in OTG audio interface connects directly to your phone or computer via USB-C for recording, live streaming, composing, and content creation. Bluetooth ensures a stable connection for wireless playback of music and backing tracks. Dedicated volume knobs for guitar and Bluetooth audio allow for perfect level balancing.

Image: The JOYO JAM Buddy II connected for OTG recording to a phone and paired via Bluetooth for backing tracks.
Versatile Connectivity
The JAM Buddy II offers various input/output options. Use the 3.5mm headphone output for silent practice. Connect directly to a mixer, audio interface, or PA system via the balanced 6.35mm TRS Output and Line Out ports. The USB Type-C port supports OTG recording and streaming.

Image: Side view of the JOYO JAM Buddy II highlighting the input, output, headphone, and USB-C ports.
Maintenance
Keep the device clean by wiping it with a soft, dry cloth. Avoid using abrasive cleaners or solvents. Store the JAM Buddy II in a dry place away from extreme temperatures and direct sunlight. Ensure all connections are secure before use.
Troubleshooting
- No Sound: Check all cable connections (guitar, output, headphones). Ensure the device is powered on and volume levels are adjusted appropriately on both the JAM Buddy II and any connected Bluetooth device.
- Bluetooth Connection Issues: Ensure Bluetooth is enabled on both the JAM Buddy II and your external device. Try unpairing and re-pairing the device.
- Poor Sound Quality: Check guitar and cable integrity. Adjust tone and gain settings. Ensure the battery is sufficiently charged.
- Device Not Charging: Verify the USB Type-C cable and power source are functioning correctly.
Specifications
| Item Weight | 1.87 pounds |
| Product Dimensions | 7.09 x 6.18 x 2.36 inches |
| Item Model Number | Manufacturer-JOYO-JAM BUDDY |
| Batteries | 1 Product Specific batteries required. (included) |
| Output Wattage | 10 Watts |
| Battery Type | Polymer |
| Power Source | Corded Electric, Battery Powered |
| Compatible Devices | Electric guitar, Mixer, PA system, PC, Phone |
| Connector Type | 3.5mm Jack, 6.35mm Jack |
| Material Type | Acrylonitrile Butadiene Styrene (ABS), Metal, aluminum alloy |
Warranty & Support
For any product issues or support inquiries, please refer to the contact information provided in your owner's manual or reach out to the seller directly through your purchase platform. JOYO TECHNOLOGY is committed to assisting customers with product-related concerns.





