1. Amplification of weak signals.2. Make equalization adjustments to the audio signal.3. Make a unique tone to decoration the sound.Voltage: dual power transformer 7V-15V (recommended dual power 12V transformer)Processor speed: 20HZ-20KHZPower supply current: 1APower supply voltage: dual power supply 12VPower: 10WPurpose: HIFI pre-stagesize:83 x 76mmMaterial:ABScolour:As shownPackage Contents:1 x HIFI power amplifier boardOnly the above package content, other products are not included.Note: Light shooting 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.
