HIFI Dual PCM1794A DAC Audio 5532dd+5534dd Op AMP Decoder XLR RCA Output I2S input Board 24Bit 192K

Dual PCM1794A Features:

PCM1794 has a 24bit 192Khz sampling rate, high resolution, a sense of speed and transparency, three-frequency balance, especially the human voice is round, sweet, and very cost-effective. 2 pieces of pcm1794 are connected in parallel, the dynamic range and signal-to-noise ratio are greatly improved, reaching 132dB. After parallel connection, the output current is doubled, the sound density is enhanced, the whole sound is more balanced, durable, and the background is cleaner. A 1794 chip is only responsible for one channel, the independent circuit is truly balanced, the two channels do not interfere with each other, and the sound is crisp and delicate, clean and transparent. It is recommended to use a linear power supply for power supply, and the details, speed and fineness are improved. The linear power supply is better and more stable than the best DC to DC power supply, and the sound field is wide and accurate.

Parallel strengthening dual 1794 chips

2 pieces of BB company's top audio flagship store decoding PCM1794A, parallel dual-core output sound quality better than AK4493, ES9038Q2M, ES9028QM, PCM5102, CS4398 and other terminal decoding chips, The dynamic and sharp high-frequency extension is good, and the air sense and sound field positioning are excellent.

True Balanced Output

A 1794 chip is only responsible for one channel, the independent circuit is truly balanced, and the two channels do not interfere with each other. The sound is crisp and warm, clean and transparent, with good resolution.

You can change the op amp tuning by yourself

The default is 5532dd+5534dd, DD stands for double precision, which is beneficial to improve the system's response speed to audio, Lower signal distortion and better dynamics.

PCB board with SMD parts

With in-line parts board

PCM1794 Finished Board