DollaTek HIFI amplificador audio OPA2604+AD827 OPAMP 5532 LM337 LM317 Preamp Pre amplifier Volume Tone Control Board

This preamp tone board wiring is optimized, reasonable and beautiful. It uses OPA2604 AD827 5532 LM337 LM317, which is a good front tone of DIY amplifier. In order to maintain the balance of the two channels, the channel and the crossover capacitor are paired, and the sense of hearing is clearer, brighter and more transparent. Using LM337, LM317 high precision regulator The rectifying part is connected with a capacitor to eliminate harmonics generated during operation and make the work more pure and stable. PCB size: (length, width, height) potentiometer spacing 24-24-24 or 35MM (suitable for most chassis holes)