- Thread Starter
- #61
On the old firmware, filter 7. Filter 2 is minimum phase which is similar.
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SMSL filters mislabeled on ES9039 DACs
- Thread starter JIW
- Start date
olds1959special
Active Member
- Thread Starter
- #63
That is how it was before the recent updates as you can see from my original post in this thread.
- Thread Starter
- #64
The DL400 has the same filter order and labeling as the DO400 and SU-X. Filter 4 is Linear phase fast roll-off low ripple (ESS #4) not Linear phase fast roll-off (ESS #3).
Picture from the product page.
Picture from the product page.
I have the DO100PRO. Am I correct in thinking that the firmware update didn't change the filters?
Currently assuming:
SMSL FL1 - Minimum phase slow roll-off low dispersion (ESS #8)
SMSL FL2 - Minimum phase (ESS #1)
SMSL FL3 - Linear phase apodizing fast roll-off (ESS #2)
SMSL FL4 - Linear phase fast roll-off (ESS #3)
SMSL FL5 - Linear phase fast roll-off low ripple (ESS #4)
SMSL FL6 - Linear phase slow roll-off (ESS #5)
SMSL FL7 - Minimum phase fast roll-off (ESS #6)
I just want my Arya Stealth to sound good connected to my Schiit Midgard. I've heard people say FL4 is the one. Any recommendations?
Currently assuming:
SMSL FL1 - Minimum phase slow roll-off low dispersion (ESS #8)
SMSL FL2 - Minimum phase (ESS #1)
SMSL FL3 - Linear phase apodizing fast roll-off (ESS #2)
SMSL FL4 - Linear phase fast roll-off (ESS #3)
SMSL FL5 - Linear phase fast roll-off low ripple (ESS #4)
SMSL FL6 - Linear phase slow roll-off (ESS #5)
SMSL FL7 - Minimum phase fast roll-off (ESS #6)
I just want my Arya Stealth to sound good connected to my Schiit Midgard. I've heard people say FL4 is the one. Any recommendations?
- Thread Starter
- #66
The manual has not been updated so it's unclear if it has been changed. All other DACs with ES9039Q2M chips had their filters changed in the same way. On all others filter 3 in the new firmware is what filter 4 was in the old, however, filter 3 in the old firmware is also good but so is filter 5 which is filter 4 in the new firmware. Try filters 3 and 4.
- Thread Starter
- #67
The Loxjie D60 using an ES9039MSPRO chip also seems to have mislabeled filters the same way as the D40 Pro. Filters are correct from "off" to "linear fast" but "linear slow" is the fast linear low ripple. Instead "minimum fast" is the slow linear, "minimum slow" is the minimum phase fast and "low dispersion" is either minimum phase slow or minimum phase slow low dispersion.
This is the list and figure from the manual.
The D40 Pro has also not had a recent update so its filters are still mislabeled as they were originally.
This is the list and figure from the manual.
The D40 Pro has also not had a recent update so its filters are still mislabeled as they were originally.
I noticed that there is a SU-X new MCU firmware 2.0.1 available on SMSL support site. The manual says that user need to connect to microUSB to do firmware update but I cannot see any microUSB port available at back panel. @SMSL-Mandy Could you help?
- Thread Starter
- #69
You can try either USB B or C and see if it works as in the manual.
- Thread Starter
- #71
- Thread Starter
- #72
The SMSL RAW Pro-DAC1 has the same mislabeling of filters as the SMSL's ES9039 Pro had when I opened this thread. Filters 1-4 are correct but 5-8 are not.
From the manual.
From the manual.
Hi all,
I haven't understood anything about this filter list for months.
In September I contacted S.M.S.L and they told me that a corrective firmware was on the way.
Even after the update, however, I read here that the list of filters, although with some corrections, is unfortunately still wrong.
I contacted S.M.S.L, AGAIN..., a couple of days ago... (I've been reading the discussion for months and I haven't read of anyone doing the same...) and they reply:
We correct it according to the frequency chart,and looks same now.
Now,manuals and firmware are as following.
Our engineer wants to know which part is incorrect.Would you kindly please let us know.
so... is this correct? is this not correct? And if so, what should be corrected?
Thank you.
I haven't understood anything about this filter list for months.
In September I contacted S.M.S.L and they told me that a corrective firmware was on the way.
Even after the update, however, I read here that the list of filters, although with some corrections, is unfortunately still wrong.
I contacted S.M.S.L, AGAIN..., a couple of days ago... (I've been reading the discussion for months and I haven't read of anyone doing the same...) and they reply:
We correct it according to the frequency chart,and looks same now.
Now,manuals and firmware are as following.
Our engineer wants to know which part is incorrect.Would you kindly please let us know.
so... is this correct? is this not correct? And if so, what should be corrected?
Thank you.
- Thread Starter
- #74
For Q2M chip DACs with the latest firmware, filters 2-6 are correctly labeled. Filter 1 is minimum phase slow low dispersion (ESS #8). See here. Filter 7 is minimum phase slow (ESS #7). To match the labeling, filter 1 should be ESS #1 and filter 7 should be ESS #7.
Have you sent SMSL a link to this thread?
I did not contact them but @SMSL-Mandy was tagged in post #5 already so they should have been aware since then. She has not contacted me via forum messages either so I was not optimistic about contacting them directly.
Hi, thanks for your answer.
Yes I send a link to this thread (two times).
I contacted them with the mail on the site:
(kelly@... ...)
So what I should reply?
Can I send your answer:
Thanks!
Yes I send a link to this thread (two times).
I contacted them with the mail on the site:
(kelly@... ...)
So what I should reply?
Can I send your answer:
And for Pro chip? How is the list?
Thanks!
- Thread Starter
- #76
It is all in this thread. For DL400, DO400 and SU-X, all seem correct apart from filter 4 which is ESS #4 instead of ESS #3. For all other Pro chip DACs, it is as when I opened the thread.
If you gave them the link, how have they not figured it out themselves?
Sure, send them what I wrote and tell them to read the entire thread. If that is not enough, tell them to have @SMSL-Mandy send me a message on here. Since I use gmail, e-mail is unfortunately not viable since I am not giving them my university e-mail.
- Thread Starter
- #78
I have just read through the latest datasheets (0.2.0 for Q2M and 0.3.2 for Pro). Here are all the pages where sections relevant to digital filters begin.
Q2M 0.2.0
P12 Hardware mode GPIO6
P23 GPIO config GPIO6
P32 Digital filters
P56 Register map, R88 bits 0-2.
P84 Register 88 [2:0]
PRO 0.3.2
P17 Hardware mode GPIO6
P28 Digital filters
P54 Register map, R88 bits 0-2.
P95 Register 88 [2:0]
It really seems like an easy fix. But it has seemed that way for a while now. Let's hope they finally manage it.
- Thread Starter
- #79
Only today, I discovered that on 3. March 2024 @nick_l44.1 posted in the DL200 thread:
So its been mentioned 10 months ago by others already almost four months before I wrote about it in this thread and others.
I stumbled upon the fact that some filters were not labeled correctly within a couple days of receiving my DL200 on 28. December 2023 (See here for first post about DL200). In a post from 1. January 2024, I wrote
So its been mentioned 10 months ago by others already almost four months before I wrote about it in this thread and others.
I stumbled upon the fact that some filters were not labeled correctly within a couple days of receiving my DL200 on 28. December 2023 (See here for first post about DL200). In a post from 1. January 2024, I wrote
Thus identifying filter 3 as ESS #2 and filter 4 as ESS #3 while filter 2 is labeled as ESS #2 and filter 3 is labeled as ESS #3. However, I don't remember referencing it to the data sheet.
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