Ximimark 2Pcs NE5532 PCB Sound Magnifier Board Preamplifier Audio Amplifier Module 4558 LM833 LT1057 AD827 OPA2604

Ximimark 2Pcs NE5532 PCB Sound Magnifier Board Preamplifier Audio Amplifier Module 4558 LM833 LT1057 AD827 OPA2604Made of high quality brass for durabilityGood workmanship, solid materials, quality needless to say, absolutely reliable. Changing the resistance of R5 and R6 from 47K to 100K can increase the magnification to 10 times. The NE5532 is a dual op amp. Description：The default magnification of the front amplifier is 5 times, which is suitable for some low sensitivity sound sources to improve the volume and sound quality. The power supply voltage is wide, the voltage range is DC: 6V to 30V, and it can work normally;Double sided board design is adopted, and the circuit board is wired on both sides, which has strong anti interference ability and effectively reduces the current sound caused by circuit interference. The magnification is adjustable. It can be increased to 10 times by replacing R5 and R6. The circuit is compatible with 90% of the dual op amp chips on the market, with a wide range of upgrades and large DIY space. Thank you. Package Included: Ximimark 2Pcs NE5532 PCB Sound Magnifier Board Preamplifier Audio Amplifier Module 4558 LM833 LT1057 AD827 OPA2604.