MINI USB DAC Supports Mobile Phone OTG USB Sound Card With MIC Amp DIY

Mini USB Decoder Supports Mobile Phone OTG USB Sound Card With MIC Headphone Amplifier

Specification:

USB input: Use an ordinary USB extension cable or directly plug into the motherboard USB interface to output the signal, earphone dedicated output interface,
with headphone amplifier function, no output coupling capacitor, line signal output mode, output with coupling capacitor, connect to the front stage or Power amplifier.

The MIC microphone input socket can be connected to an ordinary microphone, and it can be switched to USB for direct power supply. Or external linear AC power supply, voltage range AC 7-15V.

Support 16BIT, 44-48K sampling rate, performance is better than PCM 27XX series.

It has a dedicated headphone output. The MOSFET output is used inside the chip, and it uses a floating ground wire. So there is no output capacitor. Connect headphones to get good bass.
And its output current capability is very strong. Can drive almost all headphones. No headphone amplifier is required. It is recommended to use AC9-0 to switch to external power supply mode. There will be a great improvement.

This DAC supports 16-bit 44K or 48K digital sampling. Personally think it is enough. I have many chips with 24-bit 192K or 384K digital sampling. But there is no difference and meaning in actual application.
CD discs are also 16-bit 44K samples. No one thinks that the sound quality of CDs is not good enough.

The greatest value and significance of the USB DAC is that it can use an external linear AC9-0 power supply. Plus ANSENMEI 7805 voltage regulator IC. You can get the same pure DC voltage as the battery.

It can avoid the noise generated by the internal switching power supply of the computer host or mobile phone notebook computer. Using an external power supply can achieve a better signal-to-noise ratio.

If you compare the parameters of the chip separately. Then the index of the integrated sound card is not worse than any external DAC in the world.
The main reason for the integrated sound card is that there is no way to use an external regulated power supply. Therefore, MINI USB DAC recommends using external power supply mode.
You can use a jumper to jump to the external power supply mode. The effect will be better.

Package:

1*Mini USB Decoder