Description

 

Audio HiFi DAC Decoder Dual AK4497 + Low Phase Noise Clock w/5" Display  MX-DAC Upgraded Version   

Hardware Structure:
- AK4497*2 + FPGA decoding + XMOS + Ultra-low noise dual clocks
- 32Bit/384KHz + DSD512



Each AK4497 core power supply is powered by ADP151+LP38798's best performing ultra-low noise LDO. The left and right channels are powered independently. Core power supply noise <1uv.



XMOS+FPGA Clock System:
- FPGA is a programmable logic chip that performs clock shaping & PLL digital shaping to ensure jitter and Bit Perfect performance. USB interface uses XMOS XU208 chip, with a processing capacity of 1000Mips, and XMOS is an asynchronous clock. The XMOS+FPGA clock system features powerful jitter remover and clock recovery, and jitter performance can reach 4.6ps.
- The machine is powered by two levels of 6 sets of ultra-low noise LDO. Each chip is powered separately to ensure no mutual interference and very low ripple noise.


D/A Conversion:
- Dual AK4497 decoder chips are connected in parallel for better density and greater dynamics. The supports six digital filter options, phase selection and 99-level volume adjustment.
- Encoder is adjusted by stepless volume potentimeter and channel selection. There is no noise generated after operating for a long time.

Analog Output:
- Real full balanced output structure. Operational amplifier circuit is built with discrete op amps in socket style for easy replacement.
- Standard Version: OPA49710*6 full balanced output with THD+N≤0.00015%.
- Upgraded Version: Thanks to separate components, pure class A amplifying circuit outperforms OPA49710 in performance and sound quality.



Discrete Operational Amplifier VS AD797:

Premium Components:


Power Supply:
- Power filter board effectively filters harmonic interference caused by power pollution, makes the background quieter, and improves sound problems, providing a clean and pollution-free power supply for the whole machine.
- With metal shielding cover, its transformer effectively prevents space electromagnetic wave radiation from interfering with the circuit board


Large Display:
- High light large screen displays various information, including bit rate, sampling rate, volume, channel status, filter status and phase position. It supports control by remote control.


Headphone Amplifier:
- Built with discrete components, high-power class A headphone amplifier outputs 980mW/32Ω.

 

Aviation-Grade Aluminum Material:
- The shell made of aviation-grade aluminum alloy.
- After CNC processing, grinding, polishing, 200 sandblasting, anodizing and other process, it achieves the level to mobile phone technology.


THD+N:

MX-DAC Performance Parameters:
- System: PCM 32Bit/384KHz + DSD512
- DAC: AK4497*2+FPGA
- USB: XMOS U8 Chip
- Clock: Low Noise Dual Clocks
- Screen: 5" Display
- Headphone Amplifier: High-Power Class A Headphone Amplifier (980mW/32Ω)
- Input Ports:
  USB: 32bit/384KHz, DSD512 Native
  Coaxial: 24bit/192KHz, Dop64
  Optical: 24bit/192KHz, Dop64
- Audio Performance:
  RCA Output Level: 2.8Vrms
  Balanced Output Level: 5.6Vrms
  Frequency Response: 10Hz-40KHz (±1dB)
  THD+N: ≤ 0.0002%
  SNR: > 128dB (A-weighted sound level)
  Dynamic Range: > 130db
  Channel Isolation: > 125db
- Headphone Output Powers:
  300Ω: 104mW+104mW (5.6V)
  150Ω: 208mW+208mW (5.6V)
  32Ω: 980mW+980mW (5.6V)
- Colors: Silver, Black, Golden
 
Attention: Please pay attention to the headphone output power. When the maximum power of your headphone is less than 2W, the volume of the DAC cannot be the maximum.

Package Included:
- 1 x Set of MX-DAC