Author Topic: Introducing ApplePi DAC -- Highest Performance Raspberry Pi DAC  (Read 2157 times)

Offline orchardaudio

  • Seeking Help
  • **
  • Posts: 49
  • How do you like them apples?
    • Orchard Audio
Re: Introducing ApplePi DAC -- Highest Performance Raspberry Pi DAC
« Reply #45 on: April 23, 2018, 03:37:46 PM »
Can this be used in a project to replace/emulate the Squeezebox Touch ????

You can do it, using piCorePlayer


Offline mresseguie

  • Certifiable
  • ***
  • Posts: 209
Re: Introducing ApplePi DAC -- Highest Performance Raspberry Pi DAC
« Reply #47 on: April 28, 2018, 08:35:47 PM »
Now you can get and ApplePi DAC system that is completely ready to go out of the box, and includes a 7" touchscreen.

Picture:


Here is a video showing it in action:
https://youtu.be/WOCduJMGcFU

Kickstarter project link:
https://www.kickstarter.com/projects/1844799967/applepi-dac-highest-performance-raspberry-pi-dac

Hello, Leo.

I have some questions for you:

1) Is this compatible with my Mac Mini (Apple Computers)? Is this compatible with my iPhone or iPad?

2) Eventually, the touchscreen will die or malfunction (most likely before the Pi suffers indignities). Is the touchscreen user replaceable?

3) Eventually, the touchscreen maker will stop producing this unit, what options would I have if my touchscreen dies after it is no longer available?

4) If I back this product only to discover I don't like how it sounds, may I return it for a full refund?

5) Is piCorePlayer compatible with Apple Computers?

6) It appears the 'Pi' portion is open to the elements. Is there a housing to keep dust out? Is it necessary?

7) How does this DAC differ from the DAC prototypes that Tommy sent me a couple years ago? [This should be directed to Tommy, I suppose.] I ask because I did not care for
    them. If it is materially the same, I will have no interest in your product. (Sorry, but honesty is best.)

I look forward to your response.

Regards,

Michael

 
Daedalus Audio Apollos Fritz Loudspeakers LS/5-R
Gustard X20u DAC
dB Audio Labs Tranquility SE DAC w/Jupiter Caps
Don Sachs Model 2
Don Sachs Kootenay 120 KT88; Nuprime ST-10
TWL loom
PI Audio UberBUSS, DigiBUSS, Uber-MiniBUSS
PI Audio USB cable
Mac Mini

Offline orchardaudio

  • Seeking Help
  • **
  • Posts: 49
  • How do you like them apples?
    • Orchard Audio
Re: Introducing ApplePi DAC -- Highest Performance Raspberry Pi DAC
« Reply #48 on: April 29, 2018, 03:15:53 AM »
Michael, I send you a PM.

Offline mresseguie

  • Certifiable
  • ***
  • Posts: 209
Re: Introducing ApplePi DAC -- Highest Performance Raspberry Pi DAC
« Reply #49 on: April 29, 2018, 03:19:34 AM »
Got it. Thanks!
Daedalus Audio Apollos Fritz Loudspeakers LS/5-R
Gustard X20u DAC
dB Audio Labs Tranquility SE DAC w/Jupiter Caps
Don Sachs Model 2
Don Sachs Kootenay 120 KT88; Nuprime ST-10
TWL loom
PI Audio UberBUSS, DigiBUSS, Uber-MiniBUSS
PI Audio USB cable
Mac Mini



Offline orchardaudio

  • Seeking Help
  • **
  • Posts: 49
  • How do you like them apples?
    • Orchard Audio
Re: Introducing ApplePi DAC -- Highest Performance Raspberry Pi DAC
« Reply #52 on: May 11, 2018, 07:52:32 AM »
Just realized I never posted the specs  :duh::
  • SNR: 128dB (A-Weighted)
  • THD+N: <0.0005% (-106dB)
  • Frequency Response: DC - 22kHz
  • Balanced Output Voltage: 5 Vrms (0dBFS)
  • Balanced Output Impedance: 200 ohms
  • Single Ended Output Voltage: 2.5 Vrms (0dBFS)
  • Single Ended Output Impedance: 100 ohms
  • Supported Sample Rates: 44.1, 48, 88.2, 96, 176.4 and 192kHz
  • Supported Bit Rates: 16-Bit and 24-Bit
  • Power Consumption: 4.5W (5V @ 0.9A)
  • Chipset: 2 Burr Brown PCM1794A - monaural mode
  • Op Amps: 6 OPA1612 - dual differential output configuration


Offline orchardaudio

  • Seeking Help
  • **
  • Posts: 49
  • How do you like them apples?
    • Orchard Audio
Re: Introducing ApplePi DAC -- Highest Performance Raspberry Pi DAC
« Reply #54 on: July 22, 2018, 03:49:58 PM »
Both the ApplePi DAC and Volume-Clocker are now available for purchase.

You can buy from my ebay store here:
ApplePi DAC -- https://www.ebay.com/itm/283068026346
ApplePi Volume-Clocker -- https://www.ebay.com/itm/283046502392

You can also send me an email to leo@orchardaudio.com to buy direct and save 5%.

Offline richidoo

  • Out Of My Speaker Cabinet
  • ******
  • Posts: 11055
Re: Introducing ApplePi DAC -- Highest Performance Raspberry Pi DAC
« Reply #55 on: July 22, 2018, 05:39:23 PM »
Looks really good Leo. External HW clock great idea!

You mentioned the DACs are TI PCM1794A, nice choice. The pictures of the PCB on your kickstart page are still too small for me to read the opamps for the dual diff output stage. Can you name which output opamps you are using? It makes such a difference as I'm sure you know. Thanks
Rich

Offline orchardaudio

  • Seeking Help
  • **
  • Posts: 49
  • How do you like them apples?
    • Orchard Audio
Re: Introducing ApplePi DAC -- Highest Performance Raspberry Pi DAC
« Reply #56 on: July 23, 2018, 07:45:10 AM »
Looks really good Leo. External HW clock great idea!

You mentioned the DACs are TI PCM1794A, nice choice. The pictures of the PCB on your kickstart page are still too small for me to read the opamps for the dual diff output stage. Can you name which output opamps you are using? It makes such a difference as I'm sure you know. Thanks
Rich

The Op Amps are OPA1612

Offline orchardaudio

  • Seeking Help
  • **
  • Posts: 49
  • How do you like them apples?
    • Orchard Audio
Re: Introducing ApplePi DAC -- Highest Performance Raspberry Pi DAC
« Reply #57 on: August 02, 2018, 06:42:31 AM »
Starting to get some feedback from kickstarter backers:
Kevin:
"ApplePi DAC is an excellent DAC. Compare to the Audio Note DAC 3 I have, it has much more detail."