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Orchard Audio ApplePi and PecanPi - RaspberryPi DACs


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13 minutes ago, pjmcos said:

I am wondering if I can roll opamp from this device. How did you galvanically isolate the DAC the streamer?

How many amp does this setup need?

 

The DAC is not galvanically isolated from the RaspberryPI.

 

Can you please elaborate on your other questions, I am not sure what you are asking.

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6 hours ago, Joe09876 said:

How did you achieve such parameters with just one board? A competitor from Allo uses 3 to 4 separate boards! Where is the difference? How does it compare in terms of actual sound quality?

 

Will it work with Kodi (LibreELEC)?

 

It will work with Kodi, it uses the existing Rpi-DAC driver.

 

The specs are achieved by using high quality component, a high quality gold plated PCB with very good dielectric, and also with proper layout techniques by keeping digital and analog sections of the board from overlapping. Below are the implementation details.

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:

The sound quality is very good, but I cannot compare it to other products you will have to make that determinations yourself, as everybody has different tastes. 

 

There are two more reviews that will be coming out shortly from https://hifipig.com/ and https://theaudiophileman.com/

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Specifications for XLR Output:

  • Signal to Noise Ratio (SNR): 130dB (A-weighted)
  • Dynamic Range (DNR): 125dB
  • Total Harmonic Distortion + Noise (THD+N): -110dB or 0.0003%
  • Output Voltage: 5Vrms

Specifications for RCA Output:

  • Signal to Noise Ratio (SNR): 127dB (A-weighted)
  • Dynamic Range (DNR): 121dB
  • Total Harmonic Distortion + Noise (THD+N): -110dB or 0.0003%
  • Output Voltage: 2.5Vrms

Specifications for Headphone Amplifier:

  • 390mW peak power into 32 ohms
  • 780mW peak power into 16 ohms

 General Specifications:

  • Sampling Rates: Up to 192kHz
  • Bit Rates: Up to 24-bit
  • Size: 125mm (5") x 125mm (5") x 70mm (2.8")
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  • 1 month later...

Due to popular demand preorder pricing has been extended till May 31st.


PecanPi™ Streamer -- 399.99 -- 20% off 
The Streamer is a fully assembled and ready to go out of the box. Just plug it in, and enjoy. 
https://orchardaudio.com/shop?olsPage=products%2Fpcnp-strmr

 

PecanPi™ DAC -- 224.99 -- 25% off 
Like the DIY approach? Then this is for you. 
https://orchardaudio.com/shop?olsPage=products/pcnp-dac

 

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  • 4 weeks later...

Preorder pricing ends in 4 hours:

 

PecanPi Streamer -- 399.99 -- 20% off 
The Streamer is a fully assembled and ready to go out of the box. Just plug it in, and enjoy. 
https://orchardaudio.com/shop?olsPage=products%2Fpcnp-strmr

 

PecanPi™ DAC -- 224.99 -- 25% off 
Like the DIY approach? Then this is for you. 
https://orchardaudio.com/shop?olsPage=products/pcnp-dac

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