HERDIO 650W Peak 70V Commercial Bluetooth Amplifier 6 Zone Independent Volume Control, 4-16 Ohm Compatible, USB/SD/FM/RCA/Optical, 3 Mic Inputs with Echo, Rack Mount for Restaurant Café Office

650W PEAK POWER & WIDE COMPATIBILITY：Delivers powerful, full-range sound with 500W rated (650W peak) output. Universally works with 70V constant-voltage and 4–16Ω constant-impedance speakers for flexible commercial installations. 6 INDEPENDENT ZONE VOLUME CONTROL: Features 6 separate output zones with individual volume adjustment. Customize audio levels across different rooms or areas, perfectly suited for restaurants, cafés, offices and retail stores. STABLE BLUETOOTH CONNECTIVITY: Wirelessly stream music, podcasts or background audio from any Bluetooth-enabled smartphone, tablet or laptop with stable connectivity. PRIORITY MIC 1 & MULTIPLE INPUT OPTIONS: MIC1 has the highest audio priority, automatically muting other background sounds when broadcasting starts to ensure clear announcements, no manual switching needed. Various playback options include USB flash drives, SD cards and FM radio, with toggleable USA/EUR FM frequency bands to suit regional broadcast standards. RCA REC OUTPUT FOR SYSTEM EXPANSION Built-in RCA AUX-OUT port supports audio recording, daisy-chaining to extra amplifiers, or connection to external audio processors. Clearly labeled terminals make wiring and setup straightforward.