Features One-piece molded cabinet with high efficiency amplifier system to drive the two-way speaker system for powerful and clear sound. Robust, rugged enclosure, and lightweight makes it easy for hand carry. Also can be installed on a tripod stand. VOP (voice-over-priority) and TONE control. Mixed input amplification of wired mic, wireless mic, and audio players. Extension speaker socket can be used with MA-505EXP passive speaker. Industry’s only wireless interlinking transmitter option to interlink multiple MA-505 portables wirelessly to extend transmission range and expand coverage. Industry’s first built-in active dual antennas for long distance and stable receiving. Built-in AC switching power supply and rechargeable battery. Storage compartment for AC power cable. MA-505 Portable Wireless PA System from MIPRO ???? on Vimeo. Specifications Name: Portable Wireless PA System Max. SPL: 105 dB Drivers: 1 Tweeter & 8 Woofer Frequency Range: 70 Hz – 14 kHz Audio Inputs: MIC IN: 1 × XLR, 1 × 1/4 (6.3 mm) LINE IN: 1 × 1/8 (3.5 mm) Audio Output LINE OUT: 1 × 1/8 (3.5 mm) Amplifier Class: D Output Power: 145 W RMS, 248 W peak Receiver Modules: Up to 4 Audio Players: Bluetooth, CD/USB/SD player & recorder (optional) Transmitter Modules: MTM-91, MTM-24, MTM-58 (optional) Extension Speaker: 1 × 1/4 (6.3 mm) Other Functions: VOP, TONE control, siren sound effect Power Supply: AC 100 – 240 V or DC 24 – 28 V Battery: Built-in Li-ion battery Battery Indicator: 4-segment indicators (25/50/75/100%) Standby Time Up to 8 hours