The JOYO 40W Acoustic Amplifier BSK-40 is a powerful, rechargeable Bluetooth combo amp designed for acoustic guitarists, street performers and live streamers who need professional sound in a portable format. Built with aluminium alloy, leather and wood, this 40 watt acoustic amp delivers clear, natural tone with impressive projection for outdoor gigs, small stage shows and home practice.

BSK-40 Orange

With dual independent channels for guitar and microphone, built-in digital effects and 20 drum machine patterns, the BSK-40 is more than just an acoustic guitar amp – it’s a complete performance solution for busking, live streaming and rehearsal.

Powerful 40W Acoustic Performance for Stage and Street

The JOYO BSK-40 features a 6.5 inch bass driver (4Ω, 50W) and a 2.75 inch treble unit (8Ω, 15W), delivering a wide soundstage with strong low-end response and crisp high frequencies. The result is a pure, authentic acoustic tone with excellent clarity for vocals and guitar.

With 40W RMS output, this rechargeable acoustic amplifier is loud enough for outdoor playing, small stage performances and busking sessions. The DI output allows you to connect directly to a mixing console or PA system for larger venues, while amp in/out connections support cascading with other amplifiers.

Rechargeable Battery – Ideal for Outdoor Gigs

Powered by an 18.5V / 5.2Ah lithium battery, the BSK-40 can run for approximately 3 hours on a full charge, making it ideal for small gigs, outdoor performances and mobile setups. A built-in battery level display lets you monitor remaining power so you can play with confidence.

The included AC adapter (AC100–240V input, DC 24V/2.5A output) ensures reliable charging wherever you are.

Dual Channels for Guitar and Microphone

Designed with street singers and solo performers in mind, the JOYO BSK-40 features dedicated guitar and mic inputs:

• Guitar Input Sensitivity: -11.5dBV, 1MΩ

• Mic Input Sensitivity: -41dBV, 5.6KΩ

Each channel has independent volume control, allowing you to balance vocals and instrument easily. The amp provides clean, dynamic amplification with excellent sound resolution, suitable for acoustic guitar, electro-acoustic instruments and vocal microphones.

Built-In Reverb, Chorus and Delay

Shape your sound with integrated digital effects including:

• Reverb – add depth and ambience

• Chorus – enhance warmth and width

• Delay – create space and texture

These effects allow you to adapt your tone to different musical styles, from intimate acoustic sessions to more expansive live performances.

20 Drum Machine Patterns for Practice and Songwriting

The smart Bluetooth amplifier includes 20 built-in drum patterns to support guitar practice, rhythm training and composition. This makes the BSK-40 ideal not just for performance, but also for home rehearsal and creative songwriting sessions.

Bluetooth Connectivity and Live Streaming Function

The JOYO BSK-40 is equipped with Bluetooth connectivity for wireless audio playback from smartphones, tablets and computers. Play backing tracks, rehearsal music or accompaniment directly through the amp.

It also features an internal recording and live streaming function, with multiple connection options:

• Two 3.5mm smartphone live streaming / recording ports (PORT 1 & 2)

• USB OTG Type-C live streaming / recording port

• Type-C to Lightning adapter included

• Type-C to Type-C USB cable included

This makes it ideal for online performances, social media streaming and content creation at home or outdoors.

Comprehensive Connectivity Options

The BSK-40 offers a wide range of input and output connections:

• XLR DI OUT (1KΩ) for mixer or PA connection

• AUX IN (0dBV, 3.9KΩ) for external audio sources

• MP3 USB input for music playback

• Headphone output (32Ω) for silent practice

• AMP IN (11KΩ) and AMP OUT (1KΩ) for expansion

• USB charging output: DC 5V / 1A

This rich interface ensures compatibility with acoustic guitars, microphones, headphones, smartphones, computers and external amplification systems.

Portable, Durable Design

With compact dimensions of 24.4 x 30 x 24 cm, the JOYO BSK-40 is easy to transport and store. The cabinet is constructed from aluminium alloy, wood and leather for durability and style.

The amp features a 270-degree elevation design with stand holes, making it suitable for angled placement during outdoor performances and live streaming. A dedicated carrying bag is included for easy transport to rehearsals and gigs.

What’s in the Box

• JOYO BSK-40 Acoustic Combo Amplifier

• Power Adapter and Cable

• Type-C to Lightning Adapter

• Type-C to Type-C USB Cable

• Amp Storage Bag

Key Specifications

RMS Output: 40W

Battery: 18.5V / 5.2Ah lithium

AC Adapter Input: 100–240V, 50–60Hz

AC Adapter Output: 24V / 2.5A

Bass Unit: 6.5 inch, 4Ω, 50W

Treble Unit: 2.75 inch, 8Ω, 15W

The JOYO 40W Acoustic Amplifier BSK-40 is a versatile rechargeable acoustic guitar amp with Bluetooth, drum patterns, digital effects and full DI connectivity. Whether you are busking, performing on a small stage, live streaming from home or practising with backing tracks, this portable combo amp delivers powerful, clear acoustic sound in a compact and professional package.