Add some volume to your output using this LM4961LQ/NOPB class D amplifier from Texas Instruments. It has a single input signal and a differential output signal. It has a maximum load resistance of 30 Ohm. Its typical dual supply voltage is 3|5 V, with a minimum of 2.7|3 V and maximum of 5|9 V. It has a 1-channel mono output. This audio amplifier has a minimum operating temperature of -40 °C and a maximum of 85 °C. Its typical PSRR is 80 dB. This device uses dual power supplies.