SPECIFICATIONS

9
Independent EI cow power supply
Separate high and low voltage independent power supply. Improve the separation and mutual interference of the whole machine, making it work more stably. Ensure the dynamics and speed of its large-scale music. The transformer is divided into two 12W+12W sections, made of oxygen free copper wire and Japanese Z11 silicon steel sheet. It has a medium frequency thickness, high density, warm sound, and better performance than the ring type. Many European famous aircraft also use EI Niu power supply, which has its own advantages.


This board adopts the classic scheme: CS8416+SAA7220+TDA1541+NE5532+PCM2704
Declaration: Our store provides solutions for replacing TDA1541 with TDA1387 8 parallel and SAA7220 with QN7220

[Design Features:]  
1: Power supply requirements: AC 15V-0-15V 0.5A or above; 8V-0-8V 1A or above
2: The circuit layout adopts the classic one point grounding, with a reasonable layout, easy installation, and high mechanical strength.
3: The QN7220 developed by our store is used as the digital filter, seamlessly integrated with the TDA1387 8 parallel IC to form a seamless connection. It operates at 4X oversampling and uses the powerful CS8416 for digital reception.
4: Support multi signal access, including coaxial USB, Fiber optic, compatible with the current maximum 44.1K sampling rate and other audio files.
5: USB decoding uses TI's best decoding chip currently available: PCM2704, allowing PC users to enjoy better music.

6: The entire machine uses legitimate channels to purchase audio heating components, including audio capacitors from companies such as Nichicon, Siemens, Thomson, and Nippon Chemical. Through careful matching, the TDA1387 8 parallel IC's characteristics can be maximized.  
7: Board size: 140 * 100, using high-quality board: FR-4
8. Fully discrete resistive capacitive components have higher precision and stability than surface mount resistive capacitive components.