N75R-AU-10X NE5532 Preamplifier Amp Headphone Amplifier Board Gain 20Db RCA 35MM Volume Control EU Plug _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ N75R-AU-10X NE5532 Preamplifier Amp Headphone Amplifier Board Gain 20Db RCA 3.5MM Volume Control EU Plug _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ You can use this circuit when your device is connected to a small power amplifier. Suitable for audio small signal amplification, 10 times magnification (20db), Can directly drive the headphones (not recommended to be used with the power amplifier output). Power supply: DC 9-19V( it is best to use linear power supply, switching power supply is easy to produce hum) the amplifier chip is dual operational amplifier NE5532, the input and output are 3.5mm ordinary headphone jack and RCA lotus jack. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Voltage: AC 220V Material: Metal colour: Black Package Contents: 1 x Headphone Amplifier 1 x power adapter(Note: Random shape, don't accept the specified shape.) 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_