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OPA2604AP and OPA604AP are America products, OPA604AP is a single amplifier, OPA2604AP Dual OP amp. They are specifically designed for audio special amplifier, mellow tone, fruity, neutral warm, bile taste is strong, is known as the tube sound operational amplifier. The price is not low, but many audio fancier as friction machine upgrade preferred.
OPA2604AP input high performance audio operational amplifier for dual channel FET. It has low distortion, low noise, high SNR, high bandwidth, widely used in high quality audio circuits and other circuits that require the first-class dynamic performance.. Opa2604ap low noise FET input circuitry is provided in a large dynamic range, and minimum offset voltage, working voltage range can be from + 4.5V to + 24.0V, distortion at 1kHz is only 0.0003%, the conversion rate 25V/ microsecond, the gain bandwidth of 20MHz. NE5532 JRC4558 OP275 can directly replace AD712 amplifier, will have a good effect, work more than 15.0V better.
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