OPA1612 SoundPlus™ Audio Op Amps Texas Instruments OPA1612 SoundPlus™ Audio Op Amps feature superior sound quality, achieves very low noise density, and provides ultralow distortion of 0.000015% at 1kHz. The TI OPA1612 offers rail-to-rail output swing to within 600mV with a 2kΩ load, which increases headroom and maximizes dynamic range. This TI op amp also has a high output drive capability of ±30mA and can operate over a wide supply range of 2.25V to 18V on only 3.6mA of supply current per channel.