The Texas Instruments instrumentation amplifier INA118UG4 differential amplifier can help you amplify many low power audio samples using not just one, but two channels. Its typical dual supply voltage is ±15 V, with a minimum of ±1.35 V and maximum of ±18 V. This part has a temperature range of -40 °C to 125 °C. This device uses dual power supplies. It has a single channel per chip.