Bluetooth 5.0 Stereo Audio 2 Channel Amplifier Receiver and Box X2 Phono Preamp. BT10A Bluetooth 5.0 wireless streaming range up to 50ft(15m), with bass and treble control, Simple compact design but practical and powerful, Adopt TI TPA3116D2 chip to get clear and clarity sound, no audible noise, dead silent when nothing is playing through it. Advanced circuitry design, built-in speakers protection circuit, best for bookshelf/computer/desktop/speakers in your home.Box X2 Tube MM Phono Preamplifier: Converts phono signals to Line Level Signals with low-noise integrated circuits and high-quality components to remove low-frequency noise ensure clear sound quality. Three switchable gain modes: 39, 42, 45 dB. Adjustable gain levels to give you customizable control and outstanding compatibility. Entry-Level high-end analog sound and top-notch circuitry for an unbeatable low cost. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps". The seller is "xpres_sales" and is located in this country: US. This item can be shipped to United States.