Feature: 1. [USE PARAMETERS] The power amplifier board voltage is DC12‑24V, current is 1‑2A, if you need 24V, please make sure the current is less than 500MA. 2. [WITH POTENTIOMETER] Soundproof speaker board module, with potentiometer volume control player, easy to adjust. 3. [EXCELLENT MATERIAL] Made of excellent components, the product performance is stable and reliable, and the service life is long. 4. [FOR AUDIO DEVICES] Single power mono power amplifier module with gasket, suitable for a variety of audio equipment. 5. [COMPACT SIZE] The power amplifier module is compact, does not take up space for installation, with strong practicality. Specification: Item Type: Amplifier Module Voltage: 12V-24V Current: 1-2A, if you need 24V, please ensure that the current is less than 500MA Application Speaker Power: 10-60W Middle Treble Speaker Resistance: 4-8R Output Power: 5-120W Output Impedance: 4-16Ω Product Size: Approx. 60 x 35 x 40mm / 2.4 x 1.4 x 1.6in (without potentiometer handle length). Package List: 1 x Amplifier Module2 x Washer Note: 1. Not suitable for mobile phone audio source and truck power supply (not higher than 24V 500MA power supply), poor audio source connection will affect the sound quality2. The positive and negative poles of the circuit must be connected correctly, otherwise the board will be damaged3. The power supply cannot be overload, otherwise it will damage or burn out the power amplifier board