„allo-katana-dac-audio.dtbo“ available now in DietPi V6.10

so, 😉
the „allo-katana-dac-audio.dtbo“ is now available in DietPi V6.10; means u can select „“allo-katana-dac-audio“ in DietPi->DietPi-config->Audio..
i´ve tested it here with a „Blue“ ES9038Q2M->no success/sound..
(i use the „i-sabre-k2m“.dtbo in DietPi->works very well with the ES9038Q2M here.)

was to be expected because (as earlier posted) the .dtbo adresses the mcu on the katana-board and apparently not on our cheap and lovely chinese 9038Q2M-boards..
else nothing particular new, except i really want to test some „OPA627“ (the „Bugatti Veyron“ under the OP-AMPs) and want to buy some new, green ES9038Q2M V1.07 ..
greets from here !! 😉

Moode/Volumio on a raspberry pi vs. Samsung Bluray-player (spdif-coax) Impressions..+SRC4392 (+beta „Project 2“)

hi there, 😉
long time not seen..its a little bit silent here lately but absolutely no worry/problem..
i´have here some Samsung Bluray-Player (BD-H5500); not the worst; only with some spdif-coax output..
some days ago i thought the only, true,real good sound is via some very good CD-transporter/drive/device + directly via spdif into the ES9038Q2M and go 😉 ..
but as i heard today again the ES9038Q2M with the raspberry pi (Model 3B) and some flacs i felt its really a class of its own !!
1-2 level (soundwise) higher !!
(at present btw. i think Volumio (hated it a long time) has a very good sound/tune; a bit better than Moode 4.1 (then picoreplayer and so on)..DietPi (V6.8 now) is still „in the lead“ (IMO) but usability-wise Volumio is great..)
so, back to topic: i really don´t know why the flacs on a pi (and via I2S) had a such great sound/tune in comparison to some „normal“ CD-spdif-combos (IMO)..absolutely don´t know why; but it is (and this is said by really a lot of people in the „Hifi-world“ ;-)..(maybe its because of this delta-sigma-conversion and the „required preliminaries“)..
by that i think meanwhile the spdif-„conversion“ on the ES9038Q2M could be a problem; its not soo high-class/hi-fi as expected..(spdif-receiver-side)
in my praised DIY-audio-forum->http://www.diyaudio.com/forums/digital-line-level/314935-es9038q2m-board-129.html, they are looking lately for some „SBC 4392“ asynchron frequency decoder boards for spdif/usb decoding with 144 db !! thd and ultra-low jitter too..

Link (60$-90$)
think absolutely the same here and because only of „hearing“ out the „distortion/jitter“ via the spdif-receive-unit/decoding on the ES9038Q2M..
(so to see u must use such a SRC4392 before your ES9038Q2M and then via I2S in it, bypassing the onboard-spdif..)..
so, by that i definitively want to try out some AD797 in future (have now some Muses8920 in it) and i also want to buy definitively a new, „Green“ ES9038Q2M V1.07 because i still think the „Blue“-ones (have one here) sound really not so hi-fi as they could/expected (we discussed it here a few weeks ago)..

by that i revive my „Project 2“ a little bit; means BT/Web-control for the different-filter+HW-Volume settings on an ES9038Q2M (u can meanwhile buy it as „set/package“ with display and rotary encoder/apple-remote but nevertheless)
this time i used some „Geekcreit ESP32S Devkit-V1„-board (links/first thoughts about also at the forum-> link-FORUM ) (first post)

(ESP32S connected to a PCF8754 via some 5-3.3V logic-level-converter, controlling a 4-port relay and then to the 4 jumper on the ES9038Q2M..HW-volume via some MCP4131 will come hopefully later..)

but as said earlier, i hear almost no differences between the filter settings on these ES9038Q2M, but when, i would prefer JP3+JP6=“linear phase fast roll-off

(as said, here now listening to it with this filter-setting on a pi with Moode 4.1; and so „dry„; absolutely low latencies, perfect (but as said, Volumio/DietPi sound a little bit better (IMO))
many greets for now 😉


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

so, 😉
came by chance about this facts/post in this very interesting forum->http://www.diyaudio.com/forums/pc-based/302687-es9018k2m-es9028q2m-9038q2m-dsd-i2s-dac-hats-raspberry-pi-17.html
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 !! ->https://github.com/iancanada)

Programming-Subkurs I: IR-Receiver -> Raspberry Pi / + „Project 1“: Cambridge Audio Azur 540A Remote

because this site is all about „Building your own DIY-DAC“ 😉 (and audio in general) i just new invented a new category: Programming (Rpi+STM32) + „Projects“-> in this case „Project 1 – building your own Cambridge Audio Azur 540A Remote“ 😉
okay, got a wonderful IR-Receiver+Remote-Set (HX1838) from Aliexpress today->0,78€ !! (inkl.shipping)->Link

and have here at home an „Cambridge Audio Azur 540A“ – Amplifier..

(really good sound (more maybe later), got almost everyday better 😉 )
but with a really horrible, horrible IR-Remote->i have to point to from 1cm away 😉 ), so i thought i build an own ir-modul (receiver and transmitter) with this DIY-things and a STM32F103C8T6 „Bluepill“..
long story short: tried to setup LIRC on a RPI according to this TUT->https://tutorials-raspberrypi.de/raspberry-pi-ir-remote-control/
bu there was no output in the console..googled a lot and the solution is->“LIRC not working on Raspbian Stretch Raspberry Pi“->
„## 0.9.4 disruptive update
The configuration is so much changed that updating from 0.9.0 requires
manual intervention. This could be done using the update scripts or as
a completely manual process. Many users will always need some manual steps“
from here->https://www.raspberrypi.org/forums/viewtopic.php?t=192891
another thing is, its not a .sh file (as wrongly described) , but a python one, so->“sudo python3 lirc-old2new„..
(now it works..)
(more to come..)

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