Finally the ES9038Q2M V1.07 „Green“ arrived / results compared to the „Blue“ one..

so, 😉
hooray 😉 , finally the Green ES9038Q2M V1.07 arrived (more Hi-Fi again 😉 )->

Impressions: used first the coax-input (Samsung BD-Player) ->absolutely massive !!, thought: more hi-fi again (as with the first ES9018K2M+ES9028Q2M, not soo with „Blue“ ES9038Q2M..)
interesting is that the NE5532 is absolutely great on this „Green“ one; fabulous sound via spdif/coax+NE5532; goes really down and with good „push“..
changed first to the Muses8920 and then to 2*AD797; stick now with the ADs->more „room“, better THD, almost too thin for some i would say (in opposite in using them on the „Blue“ ones..).

would say a better performance (Green vs. Blue) by 5-10% 😉 (its also ca. 20% heavier („Green“) and the PCB is thicker; got the feel has a better „ground“, especially for the „lows“)..
other differences: the „Lock“-light on the „Green“ is more „torquise“ and is only lit in playing something over I2S (over coax its permanently)..“Blue“ Lock-light is red and permanently lit (at connect).

(if u have other questions, please leave a comment here->Link above)

many greets for now 😉

Raspi-AK4137 single-HAT for 2/3B/3B+ Pi (30$) ; „Sonore“ ISO2DSD v7

so, 😉
thx to this phenomenal (post) in the diyaudio.com-forum->https://www.diyaudio.com/forums/digital-line-level/314935-es9038q2m-board-278.html,
we have now here our AK4137 as a single HAT for the Pi !! 😉
as said in earlier posts, we have to improve the signal-quality(lower jitter and so on) over I2S->http://essabre-90xx-rpi.sfb2.com/2018/06/srcs-ti-4192-ak4137-volumio-update-foo_dsd_asio/


it costs only 30 !! $ and u can get it here->LINK
..The main function of this board is to improve the quality of the Raspberry Pi I2S signal and reduce jitter. And make up for the Raspberry Pi I2S output without MCLK! The original I2S output of the Raspberry Pi does not have MCLK and most high-performance DACs require MCLK to work. And the AK4137 reconstruction clock reduces the Raspberry Pi output signal jitter enhancement.
This board supports Raspberry Pi 2B 3B 3B+“..
so, as also posted earlier the AK4137 has 768khz (PCM) + 12.288 MHz DSD and DR: 186dB !!THD+N: -150dB ->AsahiKasei(AKM) datasheet->Link

(u use it between the Pi and our ES9038Q2M for example..a really long explanation on the other functions of this HAT is in the ebay-description above)

by that i came by chance (and according to the previous post) about this „Sonore ISO2DSD„-converter (a GUI for the sacd-ripper) + „Sonore DSD2FLAC„->


u can download both from here:
https://www.sonore.us/iso2dsd.html
https://www.sonore.us/dsd2flac.html

many greets for now !! 😉

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

so, 😉
some user at my praised Diyaudio.com-forum->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 diyaudio.com-forum (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 ->https://volumio.org/get-started/

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)->http://essabre-90xx-rpi.sfb2.com/pics/foo_out_asio.fb2k-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 !)

second,
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)..

third,
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->http://www.diyaudio.com/forums/pc-based/302687-es9018k2m-es9028q2m-9038q2m-dsd-i2s-dac-hats-raspberry-pi-post5386371.html
its from iancanada@gmail.com, Github->https://github.com/iancanada/DocumentDownload..
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 „..in 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->http://essabre-90xx-rpi.sfb2.com/2018/02/es9038q2m-project-2-building-a-bt-controlled-hw-volume-control-digital-pot-10kohm-mcp4131/)..
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…

 

 

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