Here is how Roland describe this device.
Whether battery powered or plugged in, the BA-330 delivers high-performance sound that defies its size. Its digital stereo amplifier drives four 6.5″ stereo speakers and two tweeters, positioned for wide stereo projection. It’s the ideal, all-in-one portable PA solution for small music venues, worship events, conferences, seminars, business meetings and much more.
- All-in-one portable digital PA system suitable for use anywhere
- Powerful high-quality stereo sound for audiences of up to 80 people
- No setup required, just plug in and go!
- Powered by AC power or eight AA batteries
- Four custom-designed 6.5″ speakers and two tweeters for wide stereo projection
- Built-in effects: EQ, reverb, delay, and wide (on/off per channel)
- Four-channel configuration: two channels for mic/instruments plus two channels for stereo inputs
- Stereo Aux input with dedicated volume-control knob
- Advanced Intelligent Anti-Feedback function
- Built-in tilt-back stand enables optimal monitoring angle
- Speaker-stand adaptor for mounting on a standard speaker stand
Width: 16 cm (6.5 inches) x 4, Tweeter x 2
Depth: 323 mm 12-3/4 inches
Height: 509 mm 20-1/16 inches
Weight: 13.8 kg 30 lbs. 7 oz.
With manual and power supply