Some new ES9038Q2M-things../ Raspberry Pi 3B+ first impressions..

so, 😉
some user at my praised>Link said something about a new MShow-Audio „SU5-ES9038Q2M-DAC-HIFI-XU208-DSD-TPA6120-Headphone-audio-Amp-Bluetooth-5-0″->Link 160$, and interesting is that they used some AK4113 for SPDIF-conversion; posted here earlier something about it->Link; for me another „indicator“ that the „original“-spdif conversion by the ES9038Q2M on this board is not soo good as expected, as stated also earlier; better choice would be using some SRC4192 or AK4137->Link

by that, as thinking to buy some Green ES9038Q2M V1.07, including the display, i found some pictures with this display delivered/attached in „action“ and that looks not soo nice (frankly said) 😉 , so i think its better to continue to try to build an „own“ version (display-wise) 😉

by that i´ve bought some new Raspberry pi 3B+ (cause i´ve „fucked“ up my Raspberry Zero W with some ugly soldering) and first thing i can say about the new „wifi“ (N/AC) that i had yesterday (measured with iperf3) 84Mb/s (10MB/s) via N (Asus-RT56U); not soo good (expected 300mb/s)..
greets for now 😉

SRCs TI 4192 + AK4137 / Volumio-update / foo_out_asio foobar2000-component

so, 😉
as said, „we“ have to improve the input-quality (to an ES9038Q2M par example) jitter+dynamic-range/SNR-wise->“Dynamic range: 144 dB (-60dBFS input, BW = 20Hz to FS/2, A weight),THD + N: -140dB (0dBFS relative input, BW = 20Hz to FS/2) (excerpt datasheet Ti SRC4392) over I2S (directly to the ESS-chips) from spdif or USB..
Markw4“ at my praised (Link), has posted some beautiful pictures about it (hope i can use them here too, if not please e-mail)..
(he posted also that is very important to have a short, in best case shielded, SRC-I2C connection(-cable))..

so u use it before the I2S-input on the sabre-boards..
The Ti 4192 supports only sample-rates up to 212khz, the AKM AK4137EQ „Flagship“-SRC 😉 reaches per datasheet 768khz (PCM) + 12.288 MHz DSD and DR: 186dB !!THD+N: -150dB ->Link

(the first picture is with an AK4137-assembled board (80$)->Aliexpress-Link )

Markw4“ also said that it (the AK4137) sounds maybe „slightly better“..

some Ti SRC4392 is here (25$):-> LINK  

(u can get it also assembled+USB-port/connection (60$) -> LINK (as also posted earlier))

have to think about it 😉 ..

okay, next thing is that Volumio is now at 2.411 ->

and another funny/interesting fact is that as i´ve installed a new Win10, i didnt got foobar2000 configured with foo_out_asio although i thought i had all „components“ (foo-input-sacd, asio-proxyinstall etc..) correct „applied“, but i didnt have the „foo_out_asio“ selection (or asio at all)..

searched for the foo_out_asio_plugin but didnt find it (the right one)..

found it back in „our“ Topping DX4-driver pack->its here again foo-out-asio 2.1.2 (foobar2000 component)->

greets for now 😉

Wonderful pics -> DIY-project by Terry (ES9038Q2M+Kali reclocker) + LME49720 impressions + ESP32S

first, 😉
here is some beautiful pic by „Terry“ again on his DIY-audio project (an ES9038Q2M+Kali reclocker i guess); wonderfulst !!
also the attached TFTLCD-solution->the layout of the screen and so on..
a treasure chest on ideas for other user in building their own DACs !! fabulous !! so many thx again !! (we´ll maybe get more pictures in future !)

the LME49720 just arrived; i tested it here on an ES9028Q2M (DietPi-ympd, I-Sabre-k2M overlay):
for me too „thin„; it had a lot of air and liveliness/agility but absolutely, as said: „thin“..
after i put my Muses8920 back in i´ve got the feel: thats really hi-fi (with the Muses.)
but meanwhile thats all „whining“ on a high level and it really depends on your personal taste (on this high level->one wants to have more „push“, prefered more „rock“, the other one prefered more „classical“ music/tune and so on..)..
but nevertheless i would prefer the Muses8920 in comparison to the LME49720 by 15-20% 😉
(had not the possibility here right now to check it against the OPA2134/NE5532)..

the Geekcreit ESP32S arrived here yesterday (Link) (5,50€); 2 cores, wlan b/g/n, bluetooth on board, 4 !! spi-s and so on..think about how to use it for the DAC-control (spi-display,source-selection,filter-settings, HW-volume etc.)..

greets for now 😉

Very,very interesting post by Iancanada@diyaudio-forum/ESS-controller…

so, 😉
came by chance about this post in the diyaudio-forum->
its from, Github->
Dimdim“ from the famous Hifiduino-project is also there and they discuss a project in which the „..Sample rate, clock frequencies, X*Fs, date length, PCM/DSD/DoP format..“ could be determined by a „signal format analyzer“ (developed by Iancanada) running on the ARM-processor/Raspberry Pi to „run the ES9038Q2M in high-performance-mode“ 😉 ..

a lot of really interesting infos !! (i dont write here some more cause i don´t know if i have the „permission“ for it..)
also with the pictures..i took only here one or two; hope its okay for Ian..(if not please mail) 😉 (i personally think posting here a lot of pictures from his projects could help him to sell more from it/have more budget to develop !)
a MUST read !! 😉

(interesting is also that he uses some STM32 for his „ESS-controller; we/i´ve made some tutorials/first steps with it here too)

(another interesting topic there is by „Mikett„; he says „ the end I stuck with the 49720. It sounded slightly better than the 5532. The 5532 seemed to provide better drive but the higher frequencies on the 49720 was better I thought.“ and thats absolutely the same as i feel/think about the „drive“ on a NE5532 and second about the LME49720 which ESS recommends (see the table in an earlier post)

NodeMCU: ES9038Q2M Web-Remote-Filter/Source-Control..

so, 😉
got yesterday my „NodeMCU V3“ IoT-module->approx..2,60€ Aliexpress/Ebay/Bangood etc..
really freaky/whacky 😉 ..
i just tried something out; have to wait here for other things/“items“ 😉 to come..
It has a full 802.11 b/g/n WLAN onboard and can fully work as a webserver; its much faster than an Arduino and has also programmable GPIO-pins..
and u can fully use the Arduino-IDE..
anyway, wrote a little sketch, can now access to it via Wlan and can select the source and the different-filter on the ES9038Q2M..
u can also use some HTML-Slider to adjust maybe the onboard HW-Volume-Control (and then via some digi-poti->
but originally i wanted to control our lovely „DIY-DAC“ via Bluetooth; but a web-interface could also be an (additional) option..
so only some „tech-demo“-pics..
(but this NodeMCU is really,really freaky „stuff“ 😉 )
(i could here only test two filter right now :“BrickWall“ and „minimum phase fast roll-off“ and i must say to my degrace: i´ve heard no difference 😉 (but could be also a wiring-problem; have to evaluate more)(but tested it via Jumper some weeks ago and „Minimum-Phase-Slow-Roll-Off“ and „Linear-Phase-Fast-roll off“ looks the most promising (for me))..
but i will test it more…



ES9038Q2M+other: The right voltage/cleaner Power/Power supply->USB-bridges-/Sabre-Boards..

and so, 😉
we are now here again with a main „Hi-Fi“-theme/problem:
„Clean-/clear-/power“ and Power-Supplies“ 😉 ..
It´s all about the right-/clean power, voltage-regulator-/stabilizer..
i´m very often in this very good forum concerning all these electrical things/also concerning the ES9038Q2M->
so, and i came again to this subject (matter), cause i had/these „stuttering“-problems again with the Skysong-/Singxer-USB-bridge+the ES9038Q2M..
first i thought it´s mainly a driver problem but meanwhile i guess it could also be a power-supply problem->5V on the USB-bridge via USB !! (500mA); could really be a problem(-„stable-wise“)..
I came by it because i (try to) made a DIY-power-supply with a 32V-HP-power supply for some printer + a cheap „Step-down-power regulator/supply“ from Aliexpress->
it had 625mA and i thought this should be enough cause i´ve read elsewhere that the ES9038Q2M only needs roundabout 200mA..
I connected my ES9028Q2M with this regulator and (adjusted it down to 15V) to my raspberry and got a horrible, horrible stuttering !!
thought first it was a software-problem but wasnt..asked some user in the forum and they told me that some power-supplies may become „unstable“ with/on „low-load“..
anyway this brings my again to the above „topic“ and now i think i better use a 5V-stand alone-power supply with minimum 1A for my USB-bridge (the Skysong-/Singxer have the possibility via a barrel-jack)..
by that i´ve ordered some other 15V-power supply with „stable“ 2A for the ES9038Q2M..
where we so come back to the main „theme“: Dual 15V for the ES9038Q2M and power-supplies in general..see above 😉

(the pictures are from „Markw4“ from the above mentioned forum; hope i can use them here, there are just to „illustrate“; if not please some e-mail)

ES9038Q2M: interesting facts + ES9038Q2M DAC HAT by „iancanada“..

so, 😉
came by chance about this facts/post in this very interesting forum->
iancanada“ posted:“..ES9018 and ES9028 need the small DoP daughter board (which can be plugged in the IsolatorPi) to convert the DoP stream into DSD. However ES9038Q2M has a built in DoP decoder, so, for ES9038Q2M, the DoP daughter board is not a must.“,
+“ESS9018/28/38 has internal 32bit digital volume control. Much better than any 24bit digital volume control, but still not as good as the analog one on my PASS XP-10. However according to my listening experience, the difference is not that huge.“..

by that his „ES9038Q2M DAC HAT“ looks very fine, neat and „sophisticated“ 😉 ; mail him..😉
(also very interesting other (DIY-Audio) projects there !! ->

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