1.There are treble, bass, balance, volume adjustment 2. The potentiometer adjustment adopts the DC control method, the potentiometer separation not cause interference, and the use of a single power supply is convenient to use 3.The potentiometer separation design is adopted, and the installation distance is not limited 4. Add JRC2150 sound effect chip, effectively improve the clarity of high and low bass, and the dynamic effect is stronger<br><br>Working voltage: DC 12.5v-24V or AC 9-16v Due to different factory batches, the product words are different, and the product accessories have slight differences in color and appearance, but it does not affect normal use Colour:Photo Color Material:PCB<br><br>Package Contents: 1 x UPC1892CT potentiometer separation<br><br>Only 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.