Amplifier audio input interface diagram and its application details [map]

There are various kinds of interfaces for various applications on the power amplifier. So what are the audio input interfaces for the amplifier in these interfaces? Today, the author will explain in detail the diagram of the power amplifier audio input interface and its use.

1, digital audio input interface

COAXIAL coaxial interface



The CBL/SAT is the input source interface of the satellite receiver/Set Top Box (Cable TV), and the No. 2 interface is the audio input interface when we connect the DVD.

The main role of the coaxial interface is for audio output. It has these characteristics: HD audio output, can output digital signal to the amplifier, external audio decoding; coaxial is also a kind of digital output, but the setting on the power amplifier is not convenient for fiber; coaxial output is digital audio signal It is generally connected to an external decoder or power amplifier; then the decoder or amplifier outputs analog audio signals to the speakers to obtain a perfect 5.1 or 7.1 sound quality.

The OPTICAL interface is a fiber interface. The optical fiber interface is no longer used today. It is an audio output method. It connects optical fiber cables for audio transmission. At present, most DVD players and Blu-ray players have optical output terminals. The optical output on the TV can be connected to the home theater. System, output more excellent sound quality.

2, PHONO analog audio input interface



The PHONO analog audio input interface is dedicated to the analog disc player, high impedance interface.


PHONE is a simulated turntable interface, usually CD, VDP interface, etc. In addition to PHONE is a high-impedance interface can only be connected to the LP analog turntable, other several are interchangeable, for example, CD machine is connected to the VTR port, or It does not matter whether the recorder is connected to the VDP port. Just switch the button to make the appropriate switch.

3, analog audio input interface



On the right side of PHONO, it is also an analog audio input interface that can connect to satellite TV, DVD, Blu-ray, game consoles, CD players, and multimedia players. These interfaces correspond to non-use machines, and can input the sound of TV, DVD, Blu-ray and other devices into the amplifier, and then have the amplifier output processed to the speakers, so as to enlarge the sound processing of these devices.

4, EXTERNAL IN external analog audio input interface


This interface refers to the input of external analog audio such as computers, video recorders and other audio signals, which are played through the built-in speaker. And can access any supported audio device.

to sum up:
The above 4 points are all common audio input interfaces for power amplifiers. Of course, some power amplifiers such as the Tianlong Power Amplifier will have their own special audio input interface, which will not be described here.

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