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.

ES9038Q2M Board
ES9038Q2M Board
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 Yesterday, 12:24 AM   #3361
Johnny HIFI is offline Johnny HIFI
diyAudio Member
 
Join Date: Dec 2018
Quote:
Originally Posted by Markw4 View Post
Probably doesn't sound as interesting as it may look. It runs on a 5v wall wart and uses SMPS to develop dual rails, already a bad sign. Without seeing one close-up in person, hard to say too much more. But, every time I try one of the new low-cost Chinese ES9038Q2M variants, they always sound bad and are hard to make right. The one we mod here is sill the best layout I have seen for modding, if that were to be of interest.
You always saving me in making a bad decision, i guess #1 is the best option. Thanks Mark
  Reply With Quote
Old Yesterday, 03:25 AM   #3362
Markw4 is online now Markw4  United States
diyAudio Member
 
Join Date: Jul 2016
Location: California
Quote:
Originally Posted by Johnny HIFI View Post
... i guess #1 is the best option...
Actually, if thinking of modding then I would suggest like this: ES9038 Q2M DAC DSD decoding board supports IIS DSD 384KHz coaxial fiber DOP-in Integrated Circuits from Electronic Components & Supplies on Aliexpress.com | Alibaba Group

That is a good price for one with display, and with the display pin lifting can be avoided.

Last edited by Markw4; Yesterday at 03:36 AM.
  Reply With Quote
Old Yesterday, 03:34 AM   #3363
Markw4 is online now Markw4  United States
diyAudio Member
 
Join Date: Jul 2016
Location: California
Quote:
Originally Posted by gideon View Post
I am a bit hesitant to do all these pin liftings, I've had some weird past experiments which all ended with bricking.
Well, I also described and posted pics of a way to do it by trace cutting and patching instead of pin lifting. Besides, with an Arduino (or potentially an RPi) chances of bricking should be quite small. Only destruction of the dac chip could do that. Losing the MCU can be worked around by using Arduino to control the dac chip.

If unsure, one can always practice on scrap boards that one finds around, and or with SMD soldering practice kits. Some of it is skill, and some of it is just confidence to try even though it may look a bit intimidating.
  Reply With Quote
Old Yesterday, 03:48 AM   #3364
Moderation Team is offline Moderation Team
diyAudio Moderator
 
Moderation Team's Avatar
 
Join Date: May 2012
ES9038Q2M Board
Rules violating post removed that contained link to ESS confidential/proprietary information.
__________________
Please note: PM's sent to this account will not be answered.
  Reply With Quote
Old Yesterday, 04:05 AM   #3365
gideon is offline gideon  Israel
diyAudio Member
 
Join Date: Oct 2005
Quote:
Originally Posted by Moderation Team View Post
Rules violating post removed that contained link to ESS confidential/proprietary information.
--- repeating some of the things from the removed post ---

@Mark4 - thanks for the explanation and all the links, things are starting to fall into place now.

I'll probably wont be able to do much until next month, but will keep an eye on how the driver discussion evolve.

I am a bit hesitant to do all these pin liftings, I've had some weird past experiments which all ended with bricking.

@eslei - thanks for posting your drivers, would it only work with i2c connectivity?

@Johnny HIFI - Maybe check out the one @eslei posted which seems to have an easier way to connect to i2c.. will make it easier to experiment with the upcoming tweaks

Quote:
Originally Posted by Markw4 View Post
Well, I also described and posted pics of a way to do it by trace cutting and patching instead of pin lifting. Besides, with an Arduino (or potentially an RPi) chances of bricking should be quite small. Only destruction of the dac chip could do that. Losing the MCU can be worked around by using Arduino to control the dac chip.

If unsure, one can always practice on scrap boards that one finds around, and or with SMD soldering practice kits. Some of it is skill, and some of it is just confidence to try even though it may look a bit intimidating.
Markw4 thanks , I get what you mean but also the MCU bricking can be hard for me to start patching up later and I will probably have to look for another board
  Reply With Quote
Old Yesterday, 12:40 PM   #3366
freezebox is offline freezebox  Germany
diyAudio Member
 
Join Date: Jun 2010
Quote:
Originally Posted by Johnny HIFI View Post
You always saving me in making a bad decision, i guess #1 is the best option. Thanks Mark

To me the board you showed in post #3357 looks not bad - seems some NDK clock (at least same form factor), integrated i/v stage (type of opamps not sure, but no extra wiring, no RF issues due to a separate added board and wires and muuuch less modding work) and probably a multilayer board with better GND shield (not sure).
the dual opamp SMPS could be removed and externally fed by a linear PSU and the AVCC which seems to have a LDO for each channel could be substituted by external opamp source. You get this with a display, housing, BT Integration and RC for 140 EUR on the bay - for me worth a trial if I would not have already 2 modded boards and I was afraid of going the i/v stage - clock modding path (SMD or TH).

Last edited by freezebox; Yesterday at 12:43 PM.
  Reply With Quote

Reply


ES9038Q2M BoardHide 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
My Cambridge 500SE, needs an output board (to replace internal DAC Board) slbender Digital Source 1 11th July 2018 03:43 AM
JLSounds XMOS USB board + AK4396 board + Direct DSD PCB ravid Swap Meet 1 29th December 2016 12:36 PM
Unknown Board DC12V TPA3116 amplifier board DIY L163-9 AUS Ben Class D 0 8th December 2016 05:05 AM
FS: Ian FIFO i2s-to-PCM board, Single XO clock board trung224 Swap Meet 3 26th November 2016 03:18 PM
Lost 1 Zv4 ckt board..looking to buy 1 circuit board Blues Pass Labs 1 22nd March 2004 11:09 PM


New To Site? Need Help?

All times are GMT. The time now is 08:27 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki