The Analog Devices instrumentation amplifier AD621BR-REEL7 differential amplifier can help you amplify many low power audio samples using not just one, but two channels. Its maximum power dissipation is 650 mW. Its typical dual supply voltage is ±3|±5|±9|±12|±15 V, with a minimum of ±2.3 V and maximum of ±18 V. This part has a temperature range of -40 °C to 85 °C. This device uses dual power supplies. It has a single channel per chip.