Portable wireless PA system

A battery-powered speaker and wireless microphone system with built-in music playback, audio effects and sound controls on both the speaker and the microphone.

Studio render of the speaker main board with its display, rotary controls and three combo input jacks — Speaker main board with display and controls

Speaker main board seen from above, with the display, rotary controls and three combo input jacks — Speaker main board, controls side

Back of the speaker main board with the wireless module — Speaker main board, wireless module side

Assembled wireless microphone boards with the display, rotary control and buttons — Wireless microphone boards, assembled

Back of the wireless microphone board with an ESP32 module and USB-C connector — Wireless microphone board

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Client: Developer of portable audio systems for musicians
Scope: Hardware and firmware
Delivered: Speaker and microphone electronics and firmware
Timeline: 6 months

The challenge

A full PA setup that fits under one arm

The client wanted a portable PA system for musicians that brings wired and wireless audio, music playback and sound processing together in a single battery-powered unit.

It had to stay simple to use on stage, with clear controls on both the speaker and the microphone, so performers can adjust their own sound without walking back to the speaker.

What we built

Speaker and microphone, designed to work as one

Hardware

Speaker and microphone electronics

Electronics for both the speaker and the wireless microphone, bringing together audio inputs, wireless connectivity, battery power, displays and physical controls.

Wired and wireless audio inputs
Battery power for both units
Displays and hands-on controls on speaker and mic

Firmware

Embedded firmware

Firmware for both units that pairs the microphone automatically and puts playback, menus and sound settings within reach of either device.

Automatic microphone pairing
Bluetooth, USB and SD playback controls
Display menus
Volume, EQ and effects from either device

Result

A 30 W PA system you can control from the mic

Portable 30 W PA running on battery, with Bluetooth, USB and SD playback built in.
Four input channels: two wireless microphones and two wired inputs.
Built-in sound processing with three-band EQ and reverb, delay and chorus effects.
Control from the microphone, so performers can adjust their own sound directly from the wireless unit.

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