Although the circuit is simple, you can use other op amps instead of the NE5532, but you should also consider it when choosing an op amp, because not every op amp is suitable for this line. Wire harnesses are commonly used in the electronics industry, the automotive industry, in the manufacture of construction machinery and industrial equipment, as well as in the manufacture of white goods such as washing machines and dryers, refrigerators, and other household appliances.A industrial wire harness is typically designed to simplify the manufacture of a larger component, and is designed based on the geometric and electrical requirements of the equipment it is to be installed in. Industrial Cable Harness,Mechanical Cable Assembly,Industrial Cable Harness,Mechanical Cable Assembly,Accessories Service ETOP WIREHARNESS LIMITED , https://www.wireharness-assembling.com