Something cool for Raspberry Pi/ODROID: I2S/DSD isolator HAT with native DSD decoder

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Scott, Trung, & DJ, thanks for your responses on 192-384 files. Appreciate it!

Spent some time comparing various configurations of the Boss DAC with and without a Kali Reclocker & IsolatorPi, all separately-powered. More details tomorrow or Tuesday, but IsolatorPi and Kali came out as winners with the Boss.

Getting ready for some trials with other DACs plus the 192-384 file trials.

Been lotsa fun!

Greg in Mississippi
 
Scott, Trung, & DJ, thanks for your responses on 192-384 files. Appreciate it!

Spent some time comparing various configurations of the Boss DAC with and without a Kali Reclocker & IsolatorPi, all separately-powered. More details tomorrow or Tuesday, but IsolatorPi and Kali came out as winners with the Boss.

Getting ready for some trials with other DACs plus the 192-384 file trials.

Been lotsa fun!

Greg in Mississippi
Greg, did you stack the isolator and Kali together and individually powered?

Sent from my SM-G935F using Tapatalk
 
Hi, have you had a chance to test this with the Digi+Pro ?

(Related to this post, I was asking Ian about bnc connections: post #117)

Yes, but no point with the Kali... not utilizing it's clocks you're back at a standard digi+ anyway... I did refine the slaved digi+ a bit, and the Kali has a U.FL MCLK out: [PIC]
The PRO is best used standalone w/out the kali (just does not sound as good): [PIC]
More info: Raspberry Pi2 and Hifiberry Digi+: A cheap transport that made me happier | Page 11 | Super Best Audio Friends

And just this week playing with the pi2media (moved to my headphone setup for pics, really good sounding!):

FisJZocYUB8xCQghpGbPvypkGdIoJg62unNquOa5szRHAPQwfVcIflmtTUWjYimev3vzi6FSGwHC_tPP1LOIwjZLky1CPTFBd00c_d1mya2opLIAS4OkKn4PmCqw6cQyKNfP0skQulshZ4-9G_Y9lsFqm0EoX9VIp2e-1EQK16KO1Qs3KbNiAby7M0N9-h_a4xxq70Ee9NIlv6QHqd1OCrUbY11kL-SsnB24aewg-ACD-hIq3rBrPUoq_O4eVdJVXpEhJQ4xQG-_9dx5Hx_JkmxOMn63rZBOMeKggmAgHYf_JfT2FPzxFoAFLCVWQj20t8M1OVNuGft9WiLMjG2FiRI9Nz7kYZC7fxGtPML2_Yh5fwTu1y0_Q6dFhAKRYCNLhvyi7JIi9eQMEinHmiaZiGOvs8yrCWzq7IV7ryszRcTmfrikl5gOiIFqSRprZCfiWjwXJG5LDlbgnxW9Q5KziHPDl5Refq2agJ-nQT_9ynz7Wfa_gIFYMDFut2xPogue-A3Qb2S65nOzuIHj9ADjBwaO7EN4ywFeKfb-69kMIj_4TCXfGjLfipYI-D6GuMYHxOTmmMVh0WWYS1up1LSPlUU9GdP15xuklBSBPNtMym71EbvnA5Ko7LJO1odi3LICawQuGRmjKXlUHLz9uSnNGYeQUDZ-QVXEmpY3IChdRA=w1280-h960-no
 
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384 (352) will be DSD typically...

Here's the infamous 2L site: 2L High Resolution Music .:. free TEST BENCH

Also I use this TASCAM free editor to convert DSD to PCM: Product: TASCAM Hi-Res Editor | TASCAM

BTW, 384K kernel (LMS/piCorePlayer) can handle DSD --> 352K automatically with the DSD plugin

Also, sure you know how to upsample to 352/384 for the PCM5xxx filter bypass --

@sckramer,

With the IsolatorPi/DoPDecoder and this small I2S/DSD DAC HAT, you can play those DSD files directly. You don't need convert them into PCM:)


IsolatorPiDopES9018b
by Ian, on Flickr



IsolatorPiDopES9018c
by Ian, on Flickr



IsolatorPiDopES9018a
by Ian, on Flickr

Ian
 
Hi Ian, I am a bit late to this party, I can't seem to find a price for the isolator/DSD board. Which is your recommended DAC ? I have been looking for something like this to hook up directly to a pair of Hypex NC400 modules. Thanks.

I'll have IsolatorPi price very soon. It won't be expensive.

I recommend DAC with Master clock mode (normally has two XO on board) to work with my IsolatorPi.

Ian
 
IsolatorPi is now ready to release.

Ian

Is a daughter board for DSD/DoP no longer required? Can this be used with the Audiophonics I-Sabre ES9018KSM board (AUDIOPHONICS I-Sabre DAC ES9018K2M Raspberry Pi 3 / Pi 2 A+ B+ / I2S - Audiophonics). I am trying to find a manual for the latter - need to know whether I can control volume for PCM and DSD without conversion to PCM. I would like to control volume via a hardware mixer (not software volume control) as well as external buttons / remote.

I have only just recently started playing with a RPi and so, apologies for these questions...
 
Is a daughter board for DSD/DoP no longer required? Can this be used with the Audiophonics I-Sabre ES9018KSM board (AUDIOPHONICS I-Sabre DAC ES9018K2M Raspberry Pi 3 / Pi 2 A+ B+ / I2S - Audiophonics). I am trying to find a manual for the latter - need to know whether I can control volume for PCM and DSD without conversion to PCM. I would like to control volume via a hardware mixer (not software volume control) as well as external buttons / remote.

I have only just recently started playing with a RPi and so, apologies for these questions...

This AUDIOPHONICS ES9018K2M DAC looks pretty good. I don't have it. But I think it should be no problem for DSD. I designed a ES9018K2M DAC HAT month ago. It tested native supports DSD.

We still need the DoP decoder daughter board to get native DSD output from RPi. Without it, RPi can only convert DSD into PCM however DSD sound quality will be degraded in this way.

I would suggest you using ES9018K2M built in hardware volume control. It is 32bit processing, and better than many other digital volume solutions. But you can use the volume control in your mixer hardware too, as long as it works for DSD.


IsolatorPiDopES9018a
by Ian, on Flickr

Regards,
Ian