Full of materials, high performance, high price, high quality amplifier specially provided for HIFI musicTPA3116D2 is a class D amplifier IC with very high index parameters. The modulation frequency can reach up to 1.2MHZ, and the high- output distortion is less than 0.1%.With AUX and Bluetooth audio input methods, two in oneWith filter inductor, the sound is round and clearAdopt copper DC connector, fence type terminal, withstand high current, no heat, no damage to the wire, good wiring, not easy to short circuitProduct name: HIFI level with filter 2x50W Bluetooth digital amplifier boardProduct model: -502CChip solution: TPA3116D2 (with AM interference suppression function)With or without filter: Yes (the sound is more round and clear after filtering)Adapted supply voltage: 5~27V (optional 9W12V518V24 and other adapters, high recommended high voltage)Adapted speaker: 30W~200WNumber of channels: left and right dual channels (stereo)Bluetooth version: 5.0Bluetooth transmission distance: 15 meters (unobstructed)Protection mechanism: overvoltage, undervoltage, overheating, DC detection, short circuit protectioncolour:BlackMaterial:metalsize:82 x 50 x 18mmPackage Contents:1 x Host1 x DC head line1 x shell1 x heat sinkOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.