ITEM NAME:TPA3118 BTL Mono Audio Power Amplifier Board Module 1 x 60WDC 12V-24V!E Feature: Brand new and high quality. P roduct Features: Sound quality is very good by using this module. Mono digital audio power amplifier chip. High output and low power consumption. Applicable speaker impedance: 4-8 ohm(8 ohm is the best). Specifications: Working Voltage: DC 8-24V Power Output: 60W Applicable Speaker Impedance: 4-8 ohm PCB Board Size: 45 * 35mm Weight: 12g Package included: 1 x TPA3118 BTL Mono Digital Audio Power Amplifier Board Module Note: Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding..1 x TPA3118 BTL Mono Digital Audio Power Amplifier Board Module. Mono digital audio power amplifier chip. Sound quality is very good by using this module. PCB Board Size: 45 35mm. Due to the different display and different light, the picture may not reflect the actual color of the item.