Adjustable Subwoofer Frequency: Offers a subwoofer frequency adjustment from 20HZ-20KHZ, allowing for customized bass outputFeatures advanced integrated feedback design and proprietary high-speed gate driver error correction for ultra-low distortionHigh-Quality Components: Utilizes authentic parts for and superior sound quality, ensuring a strong service life2 Channel Power Amplifier, Connecting Multiple Speaker To An Amplifier, High-Performance Class D Power AmplifierOutput impedance:4-16 type:HIFIharmonic distortion:Less than 1KHz 0.05% 4Wvocal tract:2.0frequency response:20Hz-20KHzinput voltage:12V/24Vwireless bluetooth:supportOutput power:200WThe product appearance and printed words depending on the batch, but this does not affect use.Color:As ShownMaterial:MetalPackage Contents:1 * Audio AmplifiersOnly the above package content, other products are not included.Note: Light reflection 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.