Features One-piece molded cabinet with high efficiency amplifier system that drives the dual speaker system for powerful and clear sound. Retractable handle and rugged wheels make it amazingly easy to transport. It can be hand-carried or installed on a tripod stand. Modularized optional accessories for fast and easy installation and replacement. TONE, VOP (voice-over-priority) and ECHO control on mics. Mixed input amplification of wired mic, wireless mic, and audio players. Extension speaker socket can be used with MA-708EXP/MA-808EXP passive speaker. Industry’s first built-in active dual antennas for long distance and stable receiving. Built-in AC switching power supply and rechargeable batteries. Available add on: CDM2 CD/USB/MP3 Player module DPM3 USB/SD Player/Recorder Module Specifications Name: Portable Wireless PA System Max. SPL: 108 dB Drivers: 1.5 Tweeter & 8 Woofer Frequency Range: 50 Hz – 18 kHz Audio Inputs: MIC IN: 1 × XLR, 1 × 1/4 (6.3 mm) LINE IN: 1 × RCA Audio Outputs: LINE OUT: 1 × RCA Amplifier: Class D Output Power: 190 W RMS, 325 W peak Receiver Modules: Up to 4 Transmitter: None Extension Speaker: 1 × 1/4 (6.3 mm) Other Functions: TONE, VOP and ECHO control on mics Power Supply: AC 100 – 240 V or DC 24 – 32 V Battery: Built-in Lead-acid battery Battery Indicator: 4-segment indicators (25/50/75/100%) Standby Time: Up to 7 hours