This differential amplifier INA145UA/2K5 differential amplifier, developed by Texas Instruments, can use both channels in order to amplify an audio signal. Its typical dual supply voltage is ±3|±5|±9|±12|±15 V, with a minimum of ±2.25 V and maximum of ±18 V. This part has a temperature range of -55 °C to 125 °C. It has a single channel per chip. This device uses one or two power supplies.