The frequency response is 20 Hz-20 kilohertz, the input impedance is 27 kiloohms, the signal-to-noise ratio is greater than 88 decibels, etc.

According to the product parameter configuration table of Yajia AM200 power amplifier, it can be seen that its size is 482×455×44 mm, the output power is 190 watts, the damping coefficient is greater than or equal to 400:1, and the frequency response is 20 Hz. -20 kilohertz, input impedance 27 kiloohms, signal-to-noise ratio greater than 88 decibels, etc.

A power amplifier can also be called an amplifier. Its function is to amplify the weak signal from the audio source or preamplifier and push the speaker to play sound.