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Output Power: 2.5W at 4Ω, 10% THD, 1.5W at 8Ω, 10% THD, with 5.5V Supply. 50dB PSRR at 1KHz. Thermal and short-circuit/over-current protection. Filterless design, with ferrite bead + capacitors on output. Fixed 24dB gain, onboard trim potentiometer for adjusting input volume. Low current draw: 4mA quiescent and 1uA in shutdown mode.