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

PC Based Computer music servers, crossovers, and equalization

ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
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 18th June 2019, 01:07 AM   #872
misterdog is offline misterdog  United Kingdom
diyAudio Member
 
Join Date: Dec 2011
Location: Sheffield
Quote:
Originally Posted by iancanada View Post
I'm looking forward to your update.
Regards,
Ian
I have LL 1544A on order (https://www.audiohobby.eu/en/lundahl...r-ll1544a.html)

Simon has sourced some LL 1674's.

We should have some impressions in a week or so.
  Reply With Quote
Old 18th June 2019, 01:18 AM   #873
iancanada is offline iancanada  Canada
diyAudio Member
 
iancanada's Avatar
 
Join Date: Dec 2009
Location: Toronto
ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
It should be a work. But I can not guarantee the quality. Please let me know if you have update.

Please very careful with the pins of this kind of transformer. The magnet wires of the coils are very very thin. Can be easily disconnected inside if the pins were bent.

Ian
  Reply With Quote
Old 18th June 2019, 01:19 AM   #874
iancanada is offline iancanada  Canada
diyAudio Member
 
iancanada's Avatar
 
Join Date: Dec 2009
Location: Toronto
ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
Quote:
Originally Posted by misterdog View Post
I have LL 1544A on order (https://www.audiohobby.eu/en/lundahl...r-ll1544a.html)

Simon has sourced some LL 1674's.

We should have some impressions in a week or so.
I'm looking forward to your update.

I'm very happy with my finial setup with LL1544A transformers. I'll post my system too.

Regards,
Ian
  Reply With Quote
Old 18th June 2019, 02:10 PM   #875
sq225917 is offline sq225917  United Kingdom
diyAudio Member
 
Join Date: Jun 2004
Location: sheffield
Send a message via MSN to sq225917 ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
I'm interested to hear what the rest of your system is Ian.

Here's mine.

Source: 1Tb Msata, Pi, Fifopi (Crystek clocks), ES9038Q2M Dual Mono Dac HAT (Dac Board has supercapped rails), Standard IV (OPA1612)
Pre: Bruno Putzeys Balanced Pre with TKD pot.
Powers: Bridged Mod 86p Mono's
SPeakers: Yamaha NS1000M with RAAL 140D replacing tweeters.

Listening is all done near field and at modest volume.
  Reply With Quote
Old 20th June 2019, 04:01 AM   #876
yunyun is offline yunyun
diyAudio Member
 
Join Date: Jun 2019
Quote:
Originally Posted by iancanada View Post
Both OPA1612 and OPA1622 are top of the line audio OP amplifiers. But their sound signatures are slightly different.

OPA1622 is a bit more smooth and sweet, while OPA1612 is a bit more nature and more details. I agree that OPA1622 will be good for SE output stage or the head phone amp of the I/V STD (U3). But I like OPA1612 over OPA1622 for the balanced I/V stage (U1 and U2).

Greg has the similar feels than me. So I designed this adapter PCB package to adapt OPA1612 in SON-8 (my favorite package) to DIP8 to fit the IC sockets of I/V STD.

It's not very difficult to solder if you have experience of assembling the OPA1622 adapter. Or, please refer to this tutorial for the SMT assembling:
DocumentDownload/SMDtutorial.md at master * iancanada/DocumentDownload * GitHub

Click the image to open in full size.
OPA1612adapterPCB
by Ian, on Flickr

Click the image to open in full size.
OPA1612adapter
by Ian, on Flickr

Ian
In fact, you can buy the finished product, you don't need to solder it yourself, the price is less than $5 with FREE Economy Shipping from China/Hong Kong/Taiwan to worldwide.

https://www.ebay.com/itm/252603693880
  Reply With Quote
Old 21st June 2019, 06:30 AM   #877
CallMeMike is offline CallMeMike  United Kingdom
diyAudio Member
 
Join Date: Jul 2016
Quote:
Originally Posted by yunyun View Post
In fact, you can buy the finished product, you don't need to solder it yourself, the price is less than $5 with FREE Economy Shipping from China/Hong Kong/Taiwan to worldwide.
I'm still a strong believer that I ought to be paid for testing fake components (or at least be given FREE samples)... just saying...
  Reply With Quote
Old 21st June 2019, 06:56 AM   #878
yunyun is offline yunyun
diyAudio Member
 
Join Date: Jun 2019
Quote:
Originally Posted by CallMeMike View Post
I'm still a strong believer that I ought to be paid for testing fake components (or at least be given FREE samples)... just saying...
For only $5, you don't worry about being cheated?

You think it's too cheap to be unbelievable? I actually think it's too expensive because it's less than $2 on Taobao. There are buyers' evaluations on ebay, and they are all written in English. I believe everyone can understand and judge.
  Reply With Quote
Old 21st June 2019, 10:53 AM   #879
sq225917 is offline sq225917  United Kingdom
diyAudio Member
 
Join Date: Jun 2004
Location: sheffield
Send a message via MSN to sq225917 ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
if I buy 2,500 from Mouser they are still 2.50+ so yeh, excuse me if I think they aren't real at $2 on Tabao and any tat look exactly like those.
  Reply With Quote
Old 11th September 2019, 08:20 AM   #880
soundcheck is offline soundcheck  Germany
diyAudio Member
 
Join Date: Mar 2005
Location: DUS
Hi folks.

I'm seriously thinking about buying Ians Dual-Mono HAT.
I do own a FifoPi (I swapped the clocks with NDKs).
Inmate bisesik offers a very nice transformer HAT for the DAC. That'd my 1st choice as output stage.

I do have an Allo Shanti here but that won't help with the 3.3V.

I'd need at least 3 supplies, right?

1 5V RPI-FifoPi
1 5V clean side FifoPi
1 3.3V DAC

I know several people use 3 x 3.3V supplies/batteries just for the DAC.
How about 1 3.3V supply rail and 3 supercaps per rail? Any preferred supercaps?


#####################

Now comes the SW part. I don't want to use the controller board.
Ian refers to a "public" driver in his documentation.
We had the discussion about the legal implications earlier.
Meanwhile many data are public knowledge anyhow.
As a private person I can do whatever I want with that information.


Is anybody using that linux driver? Are there different versions out there?
Anybody with knowledge about that can also PM me.
I do know very well how to integrate stuff into the (RPI) kernel. I basically
just need to know that it works in general and if there are flaws/limitations.
E.g. So far I've seen the driver can not handle sync-clocking from FifoPi.
Can somebody confirm it? Would it be technically possible?

Why all these Qs?
I want to make sure beforehand that I'm not ending in a dead-end street.
My budget is rather limited - no room to waste any investments. And my
current system is actually not sounding that bad. I do really like the idea
of output transformers and the option to adjust the output voltage for better amp integration.



Thx.

Last edited by soundcheck; 11th September 2019 at 08:36 AM.
  Reply With Quote

Reply


ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry PiHide 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
I/V stage for ES9028Q2M gandolf Digital Line Level 25 9th February 2018 06:04 AM
ES9028Q2M balanced output evert1 Digital Line Level 0 26th December 2017 01:30 PM
ES9018K2M: best (Raspberry)-OS/384 khz + dtoverlay sfb2 PC Based 2 30th May 2017 09:43 PM
Hats off to Mr Pass, encouragement to new members Russellc Pass Labs 10 17th May 2015 08:23 AM
Hats make better bass? xstephanx Subwoofers 11 9th February 2005 10:59 AM


New To Site? Need Help?

All times are GMT. The time now is 06:40 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki