D&A Debut DAC & AMP: Alpha Pro
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D&A Debut DAC & AMP: Alpha Pro

by Xin Yu on May 23, 2025

We are excited to introduce a new brand, D&A, which is emerging as a bold force in audio with the launch of their first DAC/AMP, the Alpha Pro. This debut masterpiece transforms raw audio into vibrant sound and is priced at $699. Let's explore its features in more detail!

Where the rationality of industrial design meets the elegance of acoustic aesthetics, the D&A Alpha Pro stands out as both an engineering achievement and a sculptural statement.

The Alpha Pro was meticulously designed, utilizing the flagship ES9039MSPRO DAC chip with MQA hardware decoding, alongside fully isolated digital and analog processing. It eliminates jitter through 32-bit noise shaping and a proprietary "Zero-Jitter Clock" architecture. The 'SIGMA DAC' topology uses 8-channel differential signal summation for each channel, which reduces output impedance by four times and noise by 75%. This results in an unmatched dynamic range of 133 dB and a Total Harmonic Distortion plus Noise (THD+N) of -124 dB.


The device employs three femtosecond-grade oscillators—two for local USB clocks and one Voltage-Controlled Crystal Oscillator (VCXO) for the second Phase-Locked Loop (PLL)—which reduce jitter to just 15 picoseconds, ten times lower than conventional designs. This ensures sharper imaging, better detail, and a more natural sound across all input sources.

Furthermore, the digital and analog modules are physically separated through a four-layer PCB isolation and independent ground planes. The use of shielded blocks and star-quad power routing ensures zero crosstalk between the digital signal processing and the DAC conversion.

Critical traces are sandwiched between protective layers, forming electromagnetic "Faraday Cages." This design ensures that delay matching and star-ground topology effectively isolate the digital control, high-speed data, analog audio, and power domains.

The Alpha Pro features 32 discrete transistors across four channels. The 4C-FBDA circuit achieves an output impedance of less than 0.1Ω and total harmonic distortion (THD) of just 0.0001%. It effortlessly drives headphones with an impedance range of 160-6000Ω, delivering 6000mW per channel at 32Ω without any dynamic compression.
You can download the Alpha Pro driver for Windows from our homepage. If you have any questions, suggestions, or comments, please feel free to contact us for product details or any other inquiries. You can reach our customer support team through live chat or email us directly at support@shenzhenaudio.com. Additionally, you can easily find us on our social media accounts.
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