Adopt STMicro TDA7498E chip to get clear audio sound, No pop, no audible noise, dead silent when nothing is playing through it.160W X 2(4 ohms, 20 Hz - 20 kHz, 0.04% THD), for outdoor/ bookshelf/ computer/ desktop /ceiling /floor standing speakers, can use iPod, Phone, MP3 players, TV, Echo Dot, CD players, or Streaming Media players as input.2.0CH audio integrated amplifier, aluminum enclosed, small size, good looks, simple functionality, and excellent sound quality;Home small Hi-Fi amp, Exclusively designed for the customers who pursue HiFi sound;You can return the item if you have any problems, 24-month warranty, feel free to contact us at support@fosiaudio.com 1. Power supply range: 12v-25v; 2. THD: ≤ 0.05%; 3. Frequency Range: 20Hz - 20kHz (±1 dB); 4. SNR: ≥ 98dB; 5. Input sensitivity: ≤ 280mV; 6. Terminating impedance: 2Ohm - 8Ohm; 7. Output power: MAX 160watt *2 8. Input mode: RCA 9. Supplied Accessories: Amplifier, Power supply, AC power cord, Manual.