With OTG function, can be powered by USB, you can also use the external power supply, spare parts need welding, welding good +10 yuan. Blue green PCB is available, exactly the same
1: The USB receiver chip adopts the PCM2706 of the largest TI company in the United States. The 16BIT/48K does not have the digital taste of other high sampling chips.
2: The decoding part adopts the latest US ESS9023 top-level decoding core. ES9023 is a 24-bit stereo audio digital-to-analog conversion chip (DAC) of ESS. It adopts the industry-leading SABRE digital-to-analog conversion technology. This chip sets the best sound quality. High cost performance makes it an ideal choice for digital-to-analog conversion. The ES9023 uses patented Hyperstream architecture and time-domain jitter cancellation technology to enable jitter-free recording quality with a dynamic range of 112dB. Install the shop A2 sound card, please install the 4 pins on the left Do not connect positive and negative high voltage
SNR 112db, distortion -93db, direct output 2V RMS audio voltage, high frequency without glitches, full bass, good dive
The ES9023 has its own negative voltage conversion and can output 2V (RMS) signals. It can be used directly as a post amplifier or as a preamp amp.
Distortion: THD+N: <0.006% (RL = 10 kΩ)
There is a choice of parts and welded finished boards Finished product test OK
Component selection: output using the German WIMA, using high-precision active crystal, circuit optimization design, 0 noise design, background is very quiet, upgrade PC sound card, easy to improve sound quality
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