Active speaker 12 inches. Built-in 600 W amplifier with crossover. Extremely powerful 12-inch mid-low woofer. Bluetooth for audio streaming. MP3 playback via USB/SD input. Line and microphone input with bass and treble controls. ABS housing with carrying handle and 35 mm stand mount. The Vonyx SPJ-1200ABT is a 12-inch speaker housed in a sturdy ABS casing with Bluetooth technology, an MP3 player, a high-quality 600 W mixer/amplifier, an extremely powerful mid-woofer, and a dynamic horn driver with high compression for excellent sound reproduction. Unrestricted flexibility in setup thanks to Bluetooth technology. The MP3 player plays audio files via USB stick or SD card. The line output allows for chaining additional speakers. The durable, shock-resistant, and lightweight casing is complemented by a robust metal grille that protects the woofer. This active unit can be used as a standalone speaker and is ideal for use in bars, restaurants, small theaters and halls, fitness and conference rooms, as well as on stages.