Features: Highly performances amplifiers board: 220Wx2 fever grade bluetooth-compatible amplifiers board module, with strong output power, meeting the needs of music enthusiasts. Highly and low frequency adjustment: equipped with treble bass frequency adjustment function, users can freely adjust sound effect according to your preference. Double channel stereo: Supports double channel output to achieve stereoed sound effects, making music 3d and full, bringing immersived auditory enjoyment. Bluetooth-compatible connection: With build-in bluetooth-compatible function, it is convenient to connect wirelessly with various bluetooth-compatible devices, achieving convenient transmission. Quality materials: Highly performances class D, ensuring highly definition sound quality. Specifications: Type: Bare Board, Board with Housing(optional) Board Size: about 12.5x8.8cm/4.92x3.46inch Product Name: Bluetooth-compatible Amplifiers Board Product model: XYT220H Power supply: DC12-36V/8A Bluetooth-compatible version: BLE5.2 Frequency: 20Hz-20KHz adjustment: independent adjustment of Highly and low frequency output: Stereo2.0 Left and right channel output power: 2x10W@8Ω/12VDC 2x20W@4Ω/12VDC 2x35W@8Ω/24VDC 2x70W@4Ω/24VDC 2x80W@8Ω/36VDC 2x160W@4Ω/36VDC 2x220W@3Ω/36VDC Protections mechanism: protections against overvoltage, shortcircuit, overheating, undervoltage, etc Package Includes: 1x Amplifiers Board with/without Housing(optional) note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.