Description: WA90 is a multifunctional HIFI high-power digital power amplifier that integrates Bluetooth U disk karaoke in one, with very rich interfaces. Using imported independent DSP audio decoding chip, high and low bass effect adjustment. Built-in high-speed transmission Bluetooth module, Bluetooth 5.0 protocol, transmission up to 24-bit/48KHZ, allowing you to enjoy the lossless sound quality experience brought by wireless. U-segment dual microphone design, professional tuning, high-fidelity reduction technology, constant frequency, no noise, anti-interference, anti-howling. Dual-frequency AC enhanced receiving antenna, stable reception, receiving distance up to 50 meters. Specification: Material: Metal Size: 223x146x55mm/8.8x5.7x2.2inch Interface: 3.5mm/0.14inch Whether Plug and Play: Plug and Play External Power Supply: There is an External Power Supply Transmission Rate: 2.4 (Mbps) Effective Working Radius: 10 (m) Bluetooth Standard: 5.0 Working Frequency: 2.4 (MHz) Package Includes: 1 Piece WA90 HIFI Bluetooth Amplifier 1 Piece 2.2 RCA Audio Cable 1 Piece 3.3.5MM Audio Cable 1 Piece Power Cord 1 Piece Infrared Remote Control (without battery) 1 Piece Instruction Manual : Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.