Product Details Product Dimensions: 6 x 5 x 2 inches Item Weight: 2.2 pounds Item model number: AS-25BU Is Discontinued By Manufacturer: Yes Manufacturer: JS Electronics Limited Brand: Sunbuck Connectivity Technology: Bluetooth, Optical/Coaxial Jacks, RCA, SD, USB Controller Type: Push Button Special Feature: Built-In Bluetooth, Optical/Coaxial Jacks, Support 192 kHz audio Compatible Devices: DVD, Game Console, Personal Computer, Smartphone, Television Connector Type: Optical/Coaxial Jacks, USB Type-C Audio Output Mode: Stereo Surround Sound Channel Configuration: 2 Color: Black Product Dimensions: 6"D x 5"W x 2"H Optical/Coaxial Jacks: The small stereo amplifier can be connected to TV, CD, DVD, computer, record player, game console and other devices. Support RCA input, USB2.0, SD card, Bluetooth 5.0, FM radio to meet different audio input needs Decoding 192kHz Audio: The stereo receivers upgrade their audio processing chip to support 192kHz audio signals, bringing rich and delicate sound performance and restoring music details Transformer Upgrade: The audio amplifier can stabilize the power supply, increase the volume without sacrificing sound quality, and reduce distortion and noise. A robust and impactful sound is suitable both indoor and outdoor. The power amplifier provides you with Max 300Wx2 power output(RMS 50w ×2) Bluetooth 5.0 Wireless Connection: The bluetooth amplifier is equipped with Bluetooth music streaming with a wireless range of 40 feet / 12 meters or more. (NOTE: Signal and volume may be intermittent if there is a wall blocking between the Bluetooth device and the amplifier. Please pay attention to the distance used!） Small and Easy Operation: The bluetooth receiver has a very mini footprint which is ideal where space is at a premium. It's perfect for offices, bedrooms, small apartments, basements and garages. With bass and treble control knobs you can set the desired output of music according to your wish