The Liberty 2 by Anchor Audio is an upgraded version of their most popular portable, stand-mountable sound system originally designed in 1986. This system has been designed for indoor venues where roughly 1,500 people need to hear your speaker clearly. It can even be brought outside thanks to its rechargeable battery that lasts up to 8 hours, eliminating the need to search for a power source.This unit comes with a built-in Bluetooth receiver and two dual wireless microphone receivers. The microphone receiver allows the Go Getter 2 to pair with up to four AnchorLink wireless microphones (sold separately). A twist lock output is also included to send wired daisy-chained audio to a companion speaker.FeaturesReach crowds of 1,500+117 dB of clear soundConnect up to four wireless mics 300'+ awayBuilt-in Class 1 BluetoothLithium ion rechargeable battery; 6-8 hours per chargeSpecificationsRated Power Output: 200W AC/DC RMSMax SPL @ Rated Power: 117 dB @ 1mFrequency Response: 60 Hz to 15 kHz ± 3 dBSpeaker: 10" woofer, ceramic compression driverMicrophone Wireless Frequency: 1.9 GHz DECTMicrophone Wireless Range: 300'+ line of sightMic Inputs:Lo-Z, balanced, XLR & 1/4"34V DC condenser mic (phantom) powerHi-Z (10 kΩ), unbalanced, 1/4" phoneLine Inputs:Balanced mono, 1/4"Unbalanced stereo, 3.5mmLine Output (post fader): Isolated, 600 Ω, 1/4"Speaker Output: 4-pole Neutrik Speakon jackSensitivity for Rated Output:Lo-Z Microphone: -52 dBV (2.5 mVrms)Hi-Z Microphone: -43 dBV (7.5 mVrms)Auxiliary (line): -14 dBV (200 mVrms)AC Power Requirements: 100-240 VAC, 50/60 Hz, 250 W maxBattery: Two 12V LFP rechargeable batteries, 7.5 AHDimensions (H x W x D): 23" x 14" x 11.5" (58.4 x 35.6 x 29.26cm)Weight: 28 lbs (12.7 kg) Anchor Liberty 2 U4 Portable PA with Bluetooth and 2 Dual Wireless Mic Receivers.