The Roland BA-55 Battery Powered Portable Amplifier is a versatile and powerful self-contained speaker for singers, presentations, personal monitoring for performers and DJs, and light sound reinforcement. The speaker features 20 watts of output power and an internal wireless microphone receiver. The BA-55 also ships with a handheld wireless microphone for wireless operation right out of the box.
The BA-55 features an internal accelerometer sensor that automatically switches between stereo output (when positioned horizontally) and mono output (when positioned vertically). If you're speaking and need maximum power and projection, use the vertical mono mode. For wide musical spread, turn horizontal. Additional features include echo and reverb effect, anti-feedback control and 3-band built-in mixer with 2-band EQ controls.
Portable design with high-quality sound for audiences up to 80 people
SPL (sound pressure level) rated at a powerful 108dB
One 2.4 GHz wireless microphone included (DR-WM55); a second DR-WM55 can be purchased separately for simultaneous use
Operates on 8 AA batteries or AC power (AC adaptor included)
Onboard accelerometer sensor switches operation to stereo mode when positioned horizontally
Two 6.5" (16cm) high-performance speakers
Three-channel built-in mixer with two-band EQ
Built-in Anti-Feedback function
Line Output for recording or expanding the system
Integrated storage compartment for storing wireless microphones and accessories
Auto Power Off function
Compatible with Roland ST-A95 speaker stand
In the Box
Roland BA-55 Battery Powered Portable Amplifier (Black)