<p>Control buttons: power switch, bass adjustment, volume adjustment, treble adjustment</p> <p>Product Matching | A pair of 26 inch passive speakers. Supports connection to mobile phones, computers, MP3 players, and set-top boxes.</p> <p>The amplifier supports a 12V power supply.</p> <p>The specification of the power plug is 55X2.1mm.</p> <p>If not used for a long time, be sure to unplug the power to avoid unpredictable malfunctions or safety issues.</p> <p>Input voltage: DC12V 2A</p> <p>Rated power: 20W x 2</p> <p>Maximum support power: 100W ()</p> <p>Frequency response: 20HZ-20KHZ</p> <p>: 85db</p> <p>Product matching impedance: 4-16 </p> <p>Output channel: 2.0 stereo sound</p> <p>High pitch control: 12dB 10KHz</p> <p>Low frequency control: 12dB 100Hz</p> <p>Signal frequency: 220MV 47K</p> <p>Output port: anti falling four position wiring clip</p> <p>Audio input port: stereo (Lotus) (supports connection between computer, phone, MP3, etc.)</p> <p>Due to different batches, there may be differences in product appearance and printed text, which will not affect use</p> <p>Colour:Black</p> <p>Material:ABS</p> <p>Package Contents:</p> <p>1x Amplifier</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>