Feature 1HIGH EFFICIENCY: Adopt digital amplifier chip TPA3116D2 class D operation, with greater than 90% power efficiency and low idle loss characteristics. 2STABLE OPERATION: Advanced modulation system configuration, high integration reduces the number of components, stable and reliable in operation. 3CIRCUIT PROTECTION: Integrated self protection circuit, includes overvoltage, undervoltage, overtemperature, DC detection and short circuit protection. 4GOOD TRANSMISSION: Integrated CSR8635 Bluetooth module, the maximum Bluetooth transmission is about 10 meters (depending on the use environment). 5FOR AUDIO DEVICES: Dual channel power amplifier board, with treble and bass adjustment, output power is 120W x 2, widely used in DIY audio equipment.SpecificationItem Type: Digital Amplifier BoardMaterial: PCBChip Type: TDA3116D2Bluetooth Module: BTM836/CSR8635 (Version 4.0)Transmission Distance: Maximum Approx. 10 meters / 32.8ft (no interference blocking)Supply Voltage: DC12-24V (inside positive outside negative)Supply Current: > 3AOutput Power: 120W x 2Number of Channels: Dual Channel (treble and bass adjustment) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Amplifier Board1 x CableNotePlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.