DIY: Relay-controlled source-/filter selection ES9038Q2M (Arduino)

so, 😉
because i´m really stupid and really don´t know how to accomplish a „jumper-substitution“ and after reading in some Arduino-forums, i came to the idea of buying some relay and try to realise it via this way..
These relays are cheap, around 2€ or so, u can buy it as 1,2,4,8 and so on..they are really easy to connect/addressable..

(remark: the 3 wires on the right are for the 10k poti (and then in future for the digi-poti of course))

u connect the GND and + from JP1 on the ES9038Q2M to COM (GND) and NO (+) and thats it..(i first connected it to the NC (normally closed) but that means, if u shut the Arduino down, then the circuit is (normally-)“closed“, means jumper set..

the relay itself is easy connected; GND from the Arduino to the GND and Power (5V+) from the Arduino to the VCC-pin (the jumper JD-VCC etc.. is another story, only remove and connect it to an external power source if u want to separate the Arduino-circuit completely from the relais circuit).
IN1,IN2 etc. is connected to a pin of your choice/assignment made in the sketch like this:
#define RELAY1 8
#define RELAY2 12
#define RELAY3 6
#define RELAY4 7
(i will post the modified sketch in the forum->LINK)
so, and now i can control/set the source via the BT (via our sketch), means for example „c“ for coaxial, „o“ for optical, „i“ for I2S and so on..

if (a==’c‘)
BT.println(„Source: coaxial“);
digitalWrite(RELAY2,HIGH); //R2 OFF
digitalWrite(RELAY1,LOW); //R1 ON
lcd.print(„Source: coaxial“);


i, u, can also use this now to set the different-filter-types, as for example JP3=set and JP4=set ->“slow minimum roll off filter“)..(will also maybe make a modified sketch for this future..)..
so, and really funny/cool 😉 is that these relays really make a „clack“-noise, everytime u adress it, for example i choose „c“=coaxial it makes „clack“ and it changes to coaxial..

really „Hi-Fi“ 😉


ES9038Q2M: interesting new forum ( + DACES9038PRO

so, 😉
came here by chance to a new very interesting ES9038Q2M-forum->
some interesting pics/news on it, par example that the Green 1.06 has 7805 instead of 7808 on it and so on 😉 ->

by that, there is also a link to a 9038Pro-DAC (DACES9038PRO) designed by Andrea Ciuffoli/Quang Hao + a lot of interesting infos around the schematics of the sabre-chips->


greets for now 😉

ES9038Q2M/ES9018K2M: DSD (+perfect bitstreaming) Win8.1-foobar2000

so, 😉
because i have here heavy „overdue delivery“-problems for some Aliexpress/China-manufactored DIY-things (yesterday a Electric Soldering Iron arrived exactly after 94 !! Days), i decided to make a new try in DSD-(native)-playing under Windows..experiences so far:
(i used Win8.1 because i don´t want to fuck up my Windows10-settings with the XMOS-USB-driver)..
okay, i used foobar2000 (JRiver trial period is over 😉 ) and have here the Singxer-V4.36 driver installed..
I used the ASIO-tutorial in the Topping NX4DSD v4.14 driver and manual pack (-> because i heard absolutely nothing with the „ASIO-Singxer USB Audio Device“-settings under „Preferences->Output->Device“..

after installing the foo_dsd_asio and foo_input_sacd foobar components + Asioproxyinstall v0.72 from the Topping V4.14 pack i´ve finally got a heavy white noise on both channels with the ES9038Q2M (and very very silent music back in it) and heavy white noise only on the left channel with the ES9018K2M (both with the Skyong(Singxer)-USB-bridge))..
The Singxer USB-Audio Device Control panel displays (in this case) 5644800hz and foobar also shows:“DSD128/11290kbps/5644800hz“ and the DSD-light on the ES9038Q2M and the blue DSD-led on the Skysong are also lit (see picture above)..

i´ve read elsewhere exact the same behaviour/problem..
okay, but this is a small improvement, because with the normal „Asio-Singxer USB Audio“-driver i heard absolutely nothing..
so far for now, i really have no clue to progress further (as said didn´t test it on Win10 because of not messing around with the usb-driver there)..

If anyone here has a solution for this „white noise“-problem, please leave a comment here !!

ES9038Q2M: „Project 2“->building a BT-controlled HW-Volume-control (digital pot 10kOhm) MCP4131

so, 😉
because its a little bit silent around here lately, we still don´t know if the „Blue“ ES9038Q2M has a „shitty“ pcb and the „green“-ones sounds better, i have still buffer/“lock“-problems in windows using the V4.36 Singxer-driver on the Skysong-XMOS-USB in sample rates above 16/44 i wanted to use the onboard-HW-volume control, to which u can connect a normal 10kOhm-potentiometer (see pictures) easy..


i tested it here, and it works far not so good as expected and i guess u have a very small range of about 20% or so (in my feel) too..
i thought i could easy use the Arduino with analogwrite () and connect one pin to the middle of the onboard-3 pin but what i´ve read so far is that the Arduino can only send out PWM-signals so u need an external digital potentiometer (thats what i´ve read so far, don´t know if its true) and control it via the (in this case) SPI-bus/protocol..
for this u can buy a cheap MCP, in this case a MCP4131 of around 0,89€ and a Dip-8 socket (0,51€) etc.,etc..(more to come..)

(very good tutorial for this right now:

i will post here any „improvements“ (and (maybe) a full tut) asap..!! 😉

Topping NX4DSD->Thesycon XMOS-USB Driver Skysong/Singxer ES9038Q2M

so, 😉
because i have here really heavy problems in playing anything above 44,1/16bit due to buffer(and/or driver)-problems (on a raspberry the ES9038Q2M works perfectly) on a Skysong (Singxer)-USB-bridge and a ES9038Q2M („Blue“) i came by chance across this Topping NX4DSD..

it has also a XMOS-XU-208 and a ES9038Q2M „onboard“; interesting is the specification:
„16/32bit 44,1-768khz + DSD512 (native)“ and (whats more interesting):
NX4 DSD use costum driver from Thesycon“..
so, and thats the thing here..the „normal“ Singxer USB-Audio Driver 4.36″ does not work here satisfying with a ES9038Q2M..
2 possibilities: we get in future an update for also playing on this ES9038Q2M without problems from Singxer or we can get some custom made Theyscon driver which matches „our“ Skysong-Bridge+the ES9038Q2M..(any help here is really appreciated !!)
i´ve anyway attached here (and in the forum) the original Topping NX4DSD driver+manuals, which were btw. very interesting in setting up JRiver for perfect bitstreaming..(u have to use completely the ASIO-driver/interface..))
the Topping NX4DSD driver/manuals is the version V4.14..->NX4 DSD Manual and Driver V4.14->

ES9038Q2M: just arrived, first impressions..

okay, 😉
today the „Blue“->LINK ES9038Q2M arrived; first impressions:
the pcb is much more light (in weight) than the ones before..

first musical impressions were:
wider soundstage..heavy „lock“-problems with the Skysong-XMOS-USB-bridge (guess its a firmware/driver issue (had to wait for an update or so); i use here right now a Samsung BluRay-player directly via coax), but absolutely more „pop“-tune, by far not so analytic, spacious, also very „flat“, cries really out for a „Muses02“ OP-Amp..
there is absolutely something missing->guess it really needs its 15V..(this one is only with the 12V-plug)(but i could feed it maybe also with 15V->have to check/ask the seller) 
have immediately changed to „Muses02“; which i normally don´t do in fresh, new hifi-gear..(1-2 days „play in“-time)..
the HW-control with a 10k pot was also not so promising as expected..
i didnt test the 7 different filter; maybe the „devil“ is there..
also it could be the pcb (and the soldered components itself); don´t know it at present->more to come..
Conclusion for now (and dont forget, this is „whining on a high level“ 😉 ):
more „pop-sound“ (originally the ES9038Q2M is/was made for handys/portables), not so analytic, spacious, needs apparently its 15V (+/-), cries out for another Op-Amp (Muses02 here), didnt test the filter right know; maybe its also the quality of the pcb/components..)(but that are only the first impressions, can change without notice 😉 )

(Update 2: so, got halfway at least a fairly accurate sound..(its not sooo bad/but for me it still sounds like plate/sheet 😉 )). This ES9038Q2M is very good with a Raspberry (via I2S); no clicks/pops/distortions anymore..very easy !! i use here now DietPi V6.0->tried „sabre-k2m“; didnt work..“hifiberry-dac“+“rpi-dac“ works without any problems (but only up to 24/192; as said, „our old problem“; need modified kernel..)
as said, on a pi now very easy to handle, no clicks/pops etc..sounds very well but not soo „HiFi“ as with the ES9018/28..somehow less distorted/cleaner in a way, but not so transparent/spacious as the „old“-sabres..could be a problem with the pcb/components on it..but for normal user this ES9038Q2M should be enough 😉
(by that for me DietPi V6.0 is at present much better/cleaner than Moode V4..its much „nearer“ to the original recording; with this Dietpi u can fairly begin to work it out/fine tune))

(Update 1: (Win+Skysong USB-bridge)absolute no comparison to my „old“ ES9018K2M+ES9028Q2M->they sound really much better, absolutely more Hifi; dont know what the main reason could be; maybe the pcb+the components; absolut „platy“; sounds like sheet/plate..
(Raspberry I2S Moode 4.0 („hifiberry-dac“)); sounds really better on a raspberry !! absolutely easy to use; no more such horrible clicks/pops changing files/ made for it 😉 ->used the hifiberry-dac „overlay“->absolut no problems up to 192/24bit, but no more (our „old“ problem..) try to use some other overlays meanwhile..
settings->“Audiophonics ES9028 DAC“ works too (in Moode V4->but only up to 192/24) 

Audiophonics: ES9038Q2M on sale (50€) + some techn. description..

so, 😉
for the european „Sabre-Lover“ ;-), has now also our ES9038Q2M „on sale“(50€)..(LINK)
seems its almost identical with our „green-boards“ here;
they have also +15V DC plug on it, so i guess its PCB 1.04 minimum/upwards..

(User „Zek“ (thx a lot!) here from the forum means:“..This board has an additional regulator for a 5V pin and an additional capacitor (in the middle).“(see comments).

by that there are also some pics with more technical details..(and as said, these „solder/unsolder“-thing)

by that, Audiophonics has also a toroidal transformer „Transformer Toric 30VA 2x15V“ (LINK) on sale for only 17,90€ which seems to be ideal for our ES9038Q2M-boards..
(and a wonderful „wiring/installation“-tutorial/pictures for these torodial-transformer->

check it out 😉

ES9038Q2M: New version is out->V1.06 (Green)

so, 😉
because everyone visiting this site is really „on“ new infos to the ES9038Q2M here are some pics and a description of the new „V1.06“-pcb-layout, i would call it the „Green V1.06„..($39$ Ebay/49$-41€ Aliexpress)

they assembled also a DC-plug (here +15V DC) to it.. (to use it you have to short/solder J6 (is left above the plug from this view))
but the default voltage stays at DC +15V 0 -15V and u can still connect it directly to the board->“* It is recommended to use dual DC+-15V power supply to play board best results

the other difference i first saw that the 3pin-header (Volume) moved from „horizontal“ to „vertical“ (or vice versa)..The jumper row is now down to 5->

(maybe some other user can us tell the other differences in future)..
looks very nice 😉

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