JOYO BSK-40 MULTIFUNCTIONAL LIVE STREAMING AMP

Owner's Manual

The JOYO BSK-40 is a versatile 40W, 2-channel amplifier designed for live streaming, practice, and performance. It integrates a guitar channel, a microphone channel, a built-in drum machine, and digital effects, making it suitable for musicians and content creators.

Detailed Safety Instructions

Use only the attached power adapter. Using other adapters may cause noise, damage internal circuits, or affect the built-in battery.
Do not expose the product to damp areas (e.g., bathtubs, sinks, swimming pools) or allow liquids to spill into it, as this can cause malfunction or electric shock.
Avoid using the product in environments with flammable or explosive gases (e.g., gas stations) or dusty areas.
If the attached power adapter is broken, replacement adapters must match the original's polarity and maximum power specifications.
Turn off the power switch after use to conserve energy.
Clean the product with a clean, dry cloth. Do not use alcohol or other cleaning fluids, as they can damage the surface.
Do not open the case. For malfunctions, contact professional maintenance personnel or your local retailer.
Do not pull on the power cord or other parts to avoid damage.
During thunderstorms, lightning, or extended periods of non-use, turn off the product and unplug it.
Avoid colliding, throwing, or vibrating the equipment.
To protect the built-in battery, ensure it is fully charged if the product is not used for a long time, and recharge it every 2 months.
If the low battery indicator appears, charge the unit promptly. Over-discharge can lead to irreversible loss of battery capacity and damage.
Use only with accessories (cart, stand, tripod, bracket, table) specified or sold by the manufacturer. Exercise caution when moving combinations to prevent tip-overs.

Features

40W, 2-Channel multi-functional outdoor live streaming amplifier (1 Guitar Channel / 1 Mic Channel).
Built-in drum machine with 20 drum patterns.
Built-in digital effects: REVERB, CHORUS, DELAY.
Two 3.5mm jacks for smartphone recording and live streaming.
Internal lithium battery for up to 3 hours of continuous outdoor use on a full charge (4.5 hours charging time).
Ability to connect to 2 amps in series.
Precise power indication via an LCD screen.
Support bracket and support hole for versatile placement.
DI Output Jack for connecting to mixers or PA systems, with a MUTE button.
USB OTG Jack for live streaming, with a Type-C Jack.

Package Contents

BSK-40 Amplifier x 1
Power adapter x 1
Power cable x 1
Type-C to Lightning Adapter x 1
Type-C to Type-C USB cable x 1
Owner's manual x 1
Nylon guitar amp carry bag x 1

Note: The carry bag contains anti-collision EPE foam; please do not discard it.

Panel Controls and Ports

The BSK-40 features a comprehensive control panel. Key elements are numbered for reference:

1. PHONES Module: Includes a [Headphone Jack], an amplifier's [Mute Button], and a VOLUME knob for headphone level adjustment.
2. MIC Input Jack: For connecting a microphone.
3. Guitar Input Jack: For connecting a guitar.
4. 6.35mm Amp Connection in Series Input Jack: Connects to another amplifier's output.
5. 6.35mm Amp Connection in Series Output Jack: Outputs signal to another amplifier's input.
6. USB DC5V Output Jack: Provides 5V DC output for charging external devices.
7. XLR DI Output Jack: Balanced output for connecting to mixers or PA systems.
8. RECORDING Function Module: Features two 3.5mm jacks (PORT 1, PORT 2) for smartphone live streaming/recording, a Type-C OTG jack for live streaming/recording, and a VOLUME knob for recording channel level.
9. Battery indicator: Displays remaining battery life.
10. Working status indicator: Shows the operational status of the unit.
11. Power adapter charging port: Connect the included AC adapter here.
12. Power switch: Turns the unit on/off.
13. Guitar Channel Volume Control knob: Adjusts the volume for the guitar channel.
14. Mic Channel Volume Control knob: Adjusts the volume for the microphone channel.
15. Guitar Channel Bass Control knob: Adjusts the bass frequencies for the guitar channel.
16. Mic Channel Bass Control knob: Adjusts the bass frequencies for the microphone channel.
17. Guitar Channel MIDDLE Control knob: Adjusts the mid frequencies for the guitar channel.
18. Mic Channel Treble Control knob: Adjusts the treble frequencies for the microphone channel.
19. Guitar Channel Treble Control knob: Adjusts the treble frequencies for the guitar channel.
20. Mic Channel REVERB Mix Ratio Control Knob: Controls the amount of reverb for the microphone channel.
21. Guitar Channel CHORUS Mix Ratio Control Knob: Controls the amount of chorus effect for the guitar channel.
22. Drum machine Channel Volume Control Knob: Adjusts the volume of the drum machine.
23. Guitar Channel REVERB Mix Ratio Control Knob: Controls the amount of reverb for the guitar channel.
24. Drum machine Channel drum pattern selection Knob: Selects the drum pattern.
25. Guitar Channel DELAY Mix Ratio Control Knob: Controls the amount of delay effect for the guitar channel.
26. Drum machine Channel TAP TEMPO button: Sets the tempo for the drum machine.
27. Guitar Channel DELAY TAP TEMPO button: Sets the tempo for the guitar channel's delay effect (up to 1000ms).
28. Master Volume Control Knob: Adjusts the overall master volume.
29. MUSIC Function Module: Includes [Previous Button], [Pause/Play Button], [Next Button], a port for USB drives (MP3), an AUX IN Jack, a Bluetooth switch, and a VOLUME knob for music playback level.

Connection Diagrams

The BSK-40 offers flexible connectivity options:

Instrument and Microphone: Connect your guitar to the 'Guitar Input Jack' (3) and your microphone to the 'MIC Input Jack' (2).
Monitoring: Plug headphones into the 'PHONES Jack' (1) for private listening.
External Audio Output: Use the 'XLR DI Output Jack' (7) to connect to a mixer or PA system for larger sound reinforcement.
Series Connection: Link multiple amplifiers together using the '6.35mm Amp Connection in Series Input/Output Jacks' (4, 5).
Live Streaming & Recording: Connect smartphones or portable devices (iPad, MP4) for live streaming or recording via the 'RECORDING Function Module' (8) using its 3.5mm jacks (PORT 1, PORT 2) or the Type-C OTG jack.
External Audio Input: Connect external audio sources (e.g., media players) via the 'AUX IN Jack' (29).
Music Playback: Connect a USB drive to the 'MP3' port (29) for direct music playback.
Bluetooth: The amplifier supports Bluetooth connectivity for wireless audio streaming. Long press the Bluetooth switch to turn it on/off; tap to disconnect the Bluetooth connection.
USB Power Output: The 'USB DC5V Output Jack' (6) can provide 5V DC power to charge external devices.

Specifications

AC Adapter Input Voltage: AC100-240V 50-60Hz
AC Adapter Output Voltage: DC 24V/2.5A
Battery Specification: 18.5V/5.2Ah (lithium battery)
USB Charging Output: DC 5V/1A
Guitar Channel Input Sensitivity: -11.5dBV 1MΩ
Mic Channel Input Sensitivity: -41dBV 5.6KΩ
AUX IN Sensitivity: 0dBV 3.9KΩ
PORT 1, PORT 2 Input Impedance: 10KΩ
Headphone Out Impedance: 32Ω
AMP IN Impedance: 11KΩ
AMP OUT Impedance: 1KΩ
DI OUT Impedance: 1KΩ
RMS Power: 40W
Bass Unit: 6.5 inches, 4Ω, 50W
Treble Unit: 2.75 inches, 8Ω, 15W
Dimensions: 30cm x 24cm x 24.4cm
Weight: 5.7kg

Regulatory Information

FCC Warning Statements

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.

Caution: Any changes or modifications to this device not explicitly approved by the manufacturer could void your authority to operate this equipment.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

The device has been evaluated to meet general RF exposure requirements. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and your body.

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