PecanPi DAC -- Turn your Raspberry Pi into a High Fidelity Music Streamer / Player

[orchardaudio]

Meet the PecanPi DAC
IMG_0344_1.jpg IMG_0351.jpg

The PecanPi DAC is the only DAC for the RapsberryPi that utilized dual DACs in monaural mode. It also features true balanced dual differential output stages along with full HW digital volume control and re-clocking using a Crystek femtosecond jitter oscillator.

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:

• Sample Rates: Up to 192kHz
• Bit Rates: Up to 24-bit
• Compatible Rpi Models: 1B+, 1A+, 2B, 3B, 3B+ Zero, ZeroW
• Optional Case Size: 125mm (5") x 125mm (5") x 70mm (2.8")
• Bi-amp speakers by using XLR and RCA at the same time.

Test Results:
THD+N vs Frequency at 0dBFS (XLR)
THD+N (XLR).jpg

THD+N vs Level at 1kHz. (XLR)
THD+N vs Level (XLR).JPG

Jitter Spectrum and Noise 256k point FFT with 16 averages(XLR)
Jitter (XLR).jpg

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

It can be preordered here for $224.99 (25% off) until mid May:
https://orchardaudio.com/shop?olsPag...cts%2Fpcnp-dac
All preorders will ship between June and August.

[orchardaudio]

Link to how-to video for assembly of PecanPi DAC into optional case:

[orchardaudio]

4th ofJuly sale on PecanPi products. Save up to 25%:
www.orchardaudio.com/shop

Sale ends Sunday.

[orchardaudio]

Labor Day Sale - Up to 25% Off Through Sep. 2nd.
https://orchardaudio.com/shop?olsPage=products

[orchardaudio]

PecanPi - Delicious to the Ears - Holiday Sale

Get up to 25% off:
https://orchardaudio.com/shop?olsPage=products

[orchardaudio]

It only happens once a season — our Pi Day Sale! Use code “piday314” at checkout on 3/14-3/15 and get $31.4 off your order.

https://orchardaudio.com/shop?olsPage=products