CentIoT - NE5532 Preamp with Treble mid Bass Volume Adjustment - Pre-Amplifier Tone Controller Board for Amplifier Board

not working. only a humming sound when connected to power input. . Amazon replaced it once. But replaced item capacitors blasted when connected. No output. Poor service and very bad quality item

Beautiful preamp board. Works well with my amplifier. I am considering to buy one more.

Board build quality is good ,but Only volume control works, 3 band filter are not working And very hamming

Board quality is good, but it is defective....but store staff/owner is well respected responsible

Circuit is good quality and components are also good quality, but there is a problem you want to know the problem, this circuit is not for beginners or that person they have little knowledge of circuits, because NE 5532 IC work on rail to rail voltage in the circuit the designer make voltage divider circuit so this is the problem of understanding, lots of people feeling bad experience but this is not circuit problem this is problem of less understanding of electronics circuitry the solution is carefully examine the circuit and according to your power amplifier modify the supply voltage, if you are using class d amplifier (Ex Tpa series)than carefully handle the grounding section and if you are using class AB amplifier ( Ex. TDA 7294) with rail to rail voltage then little bit modify the power supply circuit and use regulators. I hope this information is very useful for electronic bugs.

Very low volume

Worsted of my money not working 😭😭😭😭

Third- Quality product.