D&A

The D&A Alpha Pro Seamlessly Integrates Modern and Vintage Aesthetics With Uncompromising Power for the Ultimate Listening Experience

• Features ESS ES9039MSPRO Flagship DAC chip
• 4-Channel fully balanced discrete amplification
• Powerful 6000mW + 6000mW output
• 2nd PLL Clock + 3 Femtosecond Oscillators
• Comprehensive input/output ports

Flagship Decoding Engine

The Alpha Pro harnesses ESS’s flagship ES9039MSPRO DAC with MQA hardware decoding, HyperStream technology, and fully isolated digital/analog processing. Its proprietary “Zero-Jitter Clock” and 32-bit noise shaping eliminate jitter, while the “SIGMA DAC” topology, using 8-channel differential signal summation per channel, reduces output impedance by 4× and noise by 75%, delivering an exceptional 133 dB dynamic range and -124 dB THD+N. 

No Headphone Beyond Reach

4C-FBDA Fully Balanced Discrete Amplification
Featuring 32 discrete transistors across four channels, the 4C-FBDA circuit achieves <0.1 ohms output impedance and 0.0001% THD. Effortlessly driving 16 ohms-600 ohms headphones, it delivers 6000mW + 6000mW at 32 ohms with zero dynamic compression. 

Pure Preamplifier Function
Equipped with NJU72315 analog volume control, the industry's highest-performance chip, Alpha Pro eliminates micro-detail loss at low volumes while attenuating external noise. 

Analog Input
A groundbreaking analog input circuit supports turntables and tape decks, serving as a standalone preamplifier for 90%+ legacy audio systems. 

Connect Your Way

Line Input (RCA)
Connect your turntable, CD player, or any analog source using gold-plated terminals for clean, reliable signal transfer. 

Bluetooth 5.1
Stream hi-res audio wirelessly with support for LDAC 24bit/96kHz, aptX HD, AAC, and SBC powered by the QCC5125 chip. 

Optical + Coaxial
Enjoy crystal-clear digital audio with precision clock syncing that keeps jitter down to a minimum. 

USB Audio
Hook up your computer or streamer for bit-perfect playback. Supports up to PCM 768kHz, DSD512, and full MQA decoding. 

Precision Engineered Synergy

Digital and analog modules are physically segregated via 4-layer PCB isolation and independent ground planes. Shielded blocks and star-quad power routing ensure zero crosstalk between DSP processing and DAC conversion. 

Built for Perfect Reproduction

Three femtosecond-grade oscillators—two for local USB clocks and one VCXO for the second PLL—reduce jitter to 15 ps, delivering sharper imaging, greater detail, and a more natural sound across all inputs. 

Material Excellence

Capacitance
Precision capacitors suppress harmonic distortion and enhance analytical capabilities. The Alpha Pro implements rigorous capacitor selection, testing materials and capacitance values for each chip/position to finalize the mass production formula, a critical step in acoustic tuning. 

High-Precision Low-TCR Resistors
‡1% tolerance MELF metal-film resistors ensure circuit reliability across the entire audio path. With ultra-low temperature coefficient of +25ppm/°C. resistance remains stable under thermal stress, suitable for demanding operating conditions. Such components are typically reserved for laboratory-grade instruments. 

Power System
Dual Mean Well power modules deliver superior instantaneous current output and EMI performance, enhancing soundstage precision. Dual-stage input filtering eliminates 90% mains interference. 

Gold-Plated Connectors
Gold-plated I/O ports maintain low contact impedance for pristine signal transmission. 

Specifications

• Full list of specifications
• Dimensions: 225mm x 55mm x 199.3mm
• Weight: 3.88lbs

In the Box

• D&A Alpha Pro DAC/Amp
• Power cable
• USB cable
• User manual