The latest upgraded version: amplifier chip with gold pin TA2020-020 (Korean), power supply filter capacitor using 3300uf / 25V R-uby capacitance (large volume, low height), the board adopts SMT production process, stable performance, the board overall height of only 27mm.Amplifier board using a gold pin TA2020-020 (Korean) digital amplifier chip, audio input interface 2 (3.5 headphone holder and 2.5MM Pin) to facilitate the use of different occasions.Model Number: TA2020Channels: 2 (2.0)Type: Home AmplifierOperating voltage: DC 10V-14.5Maximum output: 20W x 20WBoard size: 76mm x 62mmcolour:RedMaterial:plasticPackage Contents:1 x 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.