Orchard Audio PecanPi DAC

[orchardaudio]

Implementation Details:

• DAC Chips:  
  
  • Dual flagship Burr-Brown PCM1794As in monaural mode
    
• Digital HW Volume Control and Re-clocking
  • Crystek CCHD-575 oscillator -- ultra low clock jitter of 82fSec
    
  • SRC4193 for volume control
    
• Output stage: True balanced dual different output stages
  • Uses OPA1612s
    
  • Low Noise Panasonic Resistors
    
  • Proprietary filtering topology
    
• Ultra low noise analog power supplies
  • TPS7A4700 (4.17uV noise) for positive op-amp power supply
    
  • TPS7A3301 (16uV noise) for negative op-amp power supply
    
  • TPS7A4901 (15.4uV noise) for DAC Chips
    
• Headphone driver:
  • Dual parallel OPA1622s