2.1 Audio amplifier pre tone controller with low pass (Extra Bass) filter for hi fi audio amplifier input system.(Use WIMA,German pf)

Product details of 2.1 Audio amplifier pre tone controller with low pass (Extra Bass) filter for hi fi audio amplifier input system(Use WIMA,German pf). Feature: OP-amp chip: JRC5532 Input Voltage: Dual AC 12-15V 10 times the preamplifier the treble, alto, bass, volume control. PCB Size:105x54mm Thickness:1.6mm Note: In order to improve the SNR. please use shielded cable connect Signal input and output. Shield ground to avoid induction noise. All are China best quality parts. We all checked product before packaging. No change & return acceptabl after soldering on PCB & over voltage burn Same as picture. Chat for any query. Package Include: 1x 5Volume Control Board. Assembly in BD