Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

Best Raspberry Pi SPDIF hat? Does that make any sense or are they all the same?
Best Raspberry Pi SPDIF hat? Does that make any sense or are they all the same?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 25th October 2017, 04:59 PM   #1
Malefoda is offline Malefoda  France
diyAudio Member
 
Malefoda's Avatar
 
Join Date: Jun 2006
Send a message via MSN to Malefoda
Question Best Raspberry Pi SPDIF hat? Does that make any sense or are they all the same?

Hi fellows,

I've seen many boards for Raspberry to output SPDIF from the I2S. They "should" have different performances. I can't find any measurements to compare.
It will feed my Buffalo II, mind that its SPDIF receiver (in the ES9018) is "custom and not that bad jitter/clock stories wise". So it rises another question in how much a better SPDIF is wanted if it makes no differences with an ES9018.
Let's assume the better the SPDIF the better the joy of listening music.

Add to that, on the Raspberry side, annoying things like:
Quote:
Originally Posted by cdsgames View Post
RPI has an on board xtal of 19.2Mhz. For the 44.1Khz audio the LR Clock must be running at exactly 44.1KHz, but this is not possible since the frequency is not a multiple of 19.2MHz. So RPI will either run at 44.138 or 44.036Khz
And I wonder which is the best solution for the best SPDIF signal.

This chinese copy of the HifiBerry Digi+?
AUDIOPHONICS Digipi+ Raspberry PI A+ B+ 2.0 I2S Digital interface - Audiophonics
HifiBerry Digi+:
HiFiBerry Digi+ – transformer version | HiFiBerry

The JustBoom take?
JustBoom Digi HAT for the Raspberry Pi • JustBoom

The IQaudIO one? Much more components...
Pi-Digi+ I2S audiophile optical / electrical digital for Raspberry Pi

An HifiberryDigi+ Pro and its dedicated XOs? Linked to the 19.2MHz issue?
HiFiBerry Digi+ Pro | HiFiBerry

A so-called pro one (I guess because of AES), the Pi 2 Design aka Pi2Media 502C:
http://www.pi2design.com/store/p15/5...io_Shield.html

The expensive Allo DigiOne:
DigiOne SPDIF Output (EU)

Maybe even consider the Allo Kali prior to one of the said SPDIF hat boards?

Yep, so many trees looks like the jungle to me.

Chime in please

Matthieu
__________________
Thorens TD-318/Ortofon Super OM 20, Teac VRDS-10, Buffalo II/NTD1, Allo DigiOne/Moode, UcD400, JBL 4313Ti

Last edited by Malefoda; 30th November 2017 at 07:29 AM. Reason: Added Pi2Media
  Reply With Quote
Old 25th October 2017, 06:54 PM   #2
Gadgety is offline Gadgety
diyAudio Member
 
Join Date: Aug 2010
I read up briefly on the Kali I2S reclocker. It says "Kali will not work if your DAC is a master. Dac has to be slave." The one thing I've learned is that it's best is if the DAC is the master. So perhaps try the Allo BOSS DAC or the MiniBoss DAC for the PiZero, and save $20. Or get the Kali I2S another DAC and compare. Sell the one you won't use, or use in a different set up. As for tests, seen this? Archimago's Musings: MEASUREMENTS: Raspberry Pi 3 "Touch" music streamer
or this Archimago's Musings: MEASUREMENTS: Raspberry Pi 3 & HiFiBerry DAC+ Pro (Audio Streaming).

Last edited by Gadgety; 25th October 2017 at 06:58 PM.
  Reply With Quote
Old 25th October 2017, 07:01 PM   #3
Malefoda is offline Malefoda  France
diyAudio Member
 
Malefoda's Avatar
 
Join Date: Jun 2006
Send a message via MSN to Malefoda
Hi Gadgety,
thanks for helping, but you misread me, I don't want a DAC, already have it.
What I need to choose is a Digital Interface HAT, and just a SPDIF one.
And wondered in the Kali is of any use in this field.
__________________
Thorens TD-318/Ortofon Super OM 20, Teac VRDS-10, Buffalo II/NTD1, Allo DigiOne/Moode, UcD400, JBL 4313Ti
  Reply With Quote
Old 25th October 2017, 09:48 PM   #4
Gadgety is offline Gadgety
diyAudio Member
 
Join Date: Aug 2010
Yes, sorry, didn't pay attention to the Buffalo II. I did see the SPDIF reference. I'm still stuck in the SPDIF universe as well (or AES/EBU). Buffalo II is an asynchronous DAC, though, it might not matter much. The only thing that could hurt is your wallet, but if you don't go with that €121 unit, you're not going to be out of a big amount regardless. All units seem to have an isolation transformer. Perhaps worthwhile to check which ones they're using, what the specs are. Without much info about, I'd probably pick on of the the HifiBerrys, their DAC tested well and that digiboard is the basis for it.
  Reply With Quote
Old 27th October 2017, 01:09 PM   #5
raymondj is offline raymondj  United Kingdom
diyAudio Member
 
Join Date: Aug 2006
Location: Cambridgeshire
Hi,

I hadn't seen that IQ audio had a spdif and optical solution or probably I would be running one of those due to the price and my earlier excellent experience with the IQ dac+ as a standalone dac used with the RPI.

Currently I am using an RPI with the expensive one into Hypex DLCP and I must say the DigiOne has an awful lot going for it, easily ticking all the boxes and then some. They have just posted a link on the allo website to a recent review, which they are rightly proud off.
The DigiOne was easily configured in Moode 3.8 and was up and running in about 5 minutes from installing with the Pi and then updating Moode settings and a couple of reboots.
Sorry I cannot comment on the others as I haven't heard them. One thing that may affect your choice is availability, some of them can go in and out of stock quite quickly.
  Reply With Quote
Old 27th October 2017, 01:21 PM   #6
Malefoda is offline Malefoda  France
diyAudio Member
 
Malefoda's Avatar
 
Join Date: Jun 2006
Send a message via MSN to Malefoda
Thanks Raymond,
OK the Allo DigiOne is great, hope so as it's costy . (BTW your sentence was hard to understand for me, at first I tought it meant the Allo is bad... hope my english was better )
Like Eurovision Song Contest, one point for DigiOne from UK.
And I add to the top list the JustBoom digital board...
__________________
Thorens TD-318/Ortofon Super OM 20, Teac VRDS-10, Buffalo II/NTD1, Allo DigiOne/Moode, UcD400, JBL 4313Ti
  Reply With Quote
Old 27th October 2017, 02:25 PM   #7
raymondj is offline raymondj  United Kingdom
diyAudio Member
 
Join Date: Aug 2006
Location: Cambridgeshire
I am sure your English is fine, most likely my bad use of the mother tongue.
  Reply With Quote
Old 28th October 2017, 12:55 AM   #8
linuxfan is offline linuxfan  Australia
diyAudio Member
 
Join Date: Dec 2007
Malefoda, you might be interested in my comments about the DigiOne here -
Linear PSU for Raspberry Pi 3, which one? Confused.
  Reply With Quote
Old 28th October 2017, 12:53 PM   #9
Malefoda is offline Malefoda  France
diyAudio Member
 
Malefoda's Avatar
 
Join Date: Jun 2006
Send a message via MSN to Malefoda
Hi,
yep I take it as technically more sophisticated, even if reward in SQ is unknown to you. One point from Australia (you were in European song contest right?!) to Allo DigiOne, and maybe the review listed previously adds one as they felt a clear increase in SQ over the JustBoom board.
My target now is: reclock and isolation, leaving me 2 boards, the HifiBerry Digi+ Pro and the Allo DigiOne.
While I'm saving I'll try to find as much as I can on both.

I'm currently running the cheap PiFi Digi+, which sounds not as good as my CD transport (but way better than RPi's USB), hence the thread...
Attached Images
File Type: jpg RPI2Digi.jpg (201.4 KB, 857 views)
__________________
Thorens TD-318/Ortofon Super OM 20, Teac VRDS-10, Buffalo II/NTD1, Allo DigiOne/Moode, UcD400, JBL 4313Ti
  Reply With Quote
Old 28th October 2017, 05:39 PM   #10
raymondj is offline raymondj  United Kingdom
diyAudio Member
 
Join Date: Aug 2006
Location: Cambridgeshire
Hi Malefoda,
While you are saving for the next upgrade, and have a few minutes spare are you happy you have exhausted all the setup options for your PiFi Digi+.
I am not familiar with your unit but for instance do you have to use the USB Wi-Fi dongle have you tried an Ethernet connection and turning the Wi-Fi off. Have you tried different sample rates up to 24/192Khz etc. Maybe you could get a few more percentage points out of it. Possibly others would recommend a different PSU over the standard walwart. I guess you have been through most of the related threads, if I am teaching you to suck eggs my appologies.
  Reply With Quote

Reply


Best Raspberry Pi SPDIF hat? Does that make any sense or are they all the same?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Does this make any sense? Highfido Subwoofers 1 20th December 2015 12:56 PM
Linear voltage regulator: how to make good use of "sense" and "ground sense"? NeoY2k Analog Line Level 7 6th September 2008 11:35 PM
Does this make sense ? 00940 Solid State 7 27th March 2004 09:29 PM
does this make sense? nosegoblin Solid State 9 14th February 2004 02:19 PM
Does this make sense? Illusus Chip Amps 11 25th September 2003 01:59 PM


New To Site? Need Help?

All times are GMT. The time now is 08:13 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki