Absolutely simple Arduino IR-repeater for Hi-Fi Gear Cambridge Audio CA-540A or other..

so, 😉
after i´ve made some IR-Remote substitutions for my Cambridge Audio CA540 Azur Amp (see „Project-1“ and „Project-2“ and so on) here on the site with first Bluetooth and then Web-Control i´ve finally made it „over-simple“ 😉 and use an Arduino (2,50$) + some IR-receiver (VS1838B)(0,40$) + IR-Transmitter (0,40€) + some dupont-cable (also 0,50$ incl.shipping)->on aliexpress by example..->Link,Link,Link


the point was the right library for this and i used (many,many thx to „Eddy Yanto“ !!) the simple IR-repeater-library on github->https://github.com/eddyyanto/ir-repeater
point was that in description it says:“..This sketch receives the infrared signal on standard pin number 3, decodes and dump the infrared information on Serial and forward the raw infrared signal to pin number 4.“; but that works not !!
in the .ino on the other hand it says:“..int RECV_PIN = 4;
IRrecv irrecv(RECV_PIN);
IRsend irsend; // Defaults to pin 3“ and thats the opposite !! (works with the .ino-settings now of course)..
tried to reach him via e-mail to correct the description->no success until now..
anyway, u can now use almost any (hi-fi)-remote; place the ir-receiver at some point near u (and to which your remote can point/send to of course), make a dupont-cable-connection to your arduino in any length u wish and from there also in any length to the ir-transmitter !!
(the sketch only receives + transmit->no more other modifications to do in the sketch !! (noob-friendly 😉 )
easy as this and thats it ! 😉 (Total costs: 4$)
(working sketch is here btw.->Link) and on Github of course, again->https://github.com/eddyyanto/ir-repeater
by that i´ve bought some Burson V5i as D (Dual) and will report then about it !!

greets for now 😉

New XMOS-USB-Driver (Skysong/Singxer) -> v4.59.0_2019-02-13 + Massdrop ES9038Pro

hi there, 😉
found by chance on then shenzhenaudio-website this new XMOS-USB-driver V4.59 (02/13/2019)..is originally for the Singxer SU1/SU6;
tested here with with the Skysong(Singxer)-XMOS-USB-device (XU208)(+ES9038Q2M) on Win10 -> works fine !!
Link Essabre-90xx-rpi.sfb2.com->http://essabre-90xx-rpi.sfb2.com/pics/Singxer_USBAudio_v4.59.0_2019-02-13.rar

by that there is some Dual !! ES9038PRO on Massdrop->

->Dynamic range: 131 dB
USB: PCM 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384, 705.6, 768 kHz

interesting is the separation from the device + power supply..
it is the same principle as maybe earlier with the Mission Cyrus Amps 1-3 with an extra PSX which cost the same !! (and i had luckily here) and which remind us of the great importance of a clean, strong power supply !!

Massdrop: Burson V5i ->Dual !! 24,99$ (Single matched pair +15$)

so folks 😉,
sorry that i had lately not the time (and fun) to write here any further posts (+ time is changing here so fast concerning Pi-audio-distros and so on etc.); also i have to buy here some things first to post here more about „modding“ the ES9038Q2Ms..
but i found here right now an interesting offer by „Massdrop„-> some

BURSON V5i as single or dual !! ( Dual!! 24,99$ (or Single matched pair +15$)

so great !! 😉


hopp,hopp and get some !!!  😉

only 4 Days left !! (Drop is till March 24. 2019)

(further description:

  • The V5i-Dual is a direct replacement of the following opamps: AD823, AD823AN, AD8066, AD8620, AD712, AD827, C4570, JRC4556AD, JRC4580, JRC5532, JRC5532D, JRC5534, LF353, LM4562, LME49860, LM833N, MUSES8920, NE5532, NEC4520, NEC4570, NJM2068D, NJM2114, NJM2214D, NJM4558, NJM4558D, NJM4560, NJM5532, NJM4558P, OP275, OPA1612, OPA2277PA, OPA2132, OPA2134, OPA2604, JRC4558, RC4558D, RC4558P, TL052, TL072, MUSES01, MUSES02, MUSES8820, MUSES8920, MUSES8832, BA15532
  • The V5i-Single is a direct replacement of the following opamps: NE5534, LT1122, TL071, OPA134, OPA627, AD811,AD829, AD844, OPA604, AD8610, AD711, AD797, LME49990, LME49710


  • Lifetime warranty (must be registered on Burson Audio’s site)

greets for now !! 😉

essabre-90xx-rpi.sfb2.com / registering not possible at present..

so folks, 😉
sorry about it; but „registering“ is not possible at present; but u can still leave some comments via the comment-„button“..
by that i/we have a great „hack-attack“ and so i have to delete a really great amount of „false-user“; it could be possible that your account will be deleted too..
i inform u if registering is functional again..
by that, outgoing mail is also not possible at present (for password-resetting and so on)..i work on it, but it can last a little bit longer..
kindly excuse any inconvenience !!

greets for now !! 😉

Little update: Skysong XMOS-USB-Bridge external power supply 5V / interesting discussion „real“ DoP

so my dear visitors, 😉
after this little site got so much resonance (which i never expected) and i finally found the „real“ reason for the stuttering in my Skysong-XMOS-USB-Bridge – ES9038Q2M combo->it was the power-supply (more shortly) and i have got now such a wonderful/brilliant sound here + a very interesting discussion/topic was coming up concerning „real“ DoP (DSD) on the Sabre-boards with the „DSD-lock-light „ON„, i thought i maybe make a new post..
and excuse me, its all very „repeating“ here on the blog (said it before), but its a blog, with a little „Life-line“ and so we have to live with it 😉 ..
back to the first topic: as said in this post->http://essabre-90xx-rpi.sfb2.com/2018/04/es9038q2mskysong-singxer-xmos-usb-bridge-final-thoughts-settings-tone-optimization/->“..by that to provide the Skysong/Singxer USB-bridge with an external 5V power supply also boosted the overall performance of the Bridge by 10-15% !! absolutely to recommend !!..“ i had lately this „stuttering“ on the combo again, thought first the ESS-PCB/-chip is damaged, had not enough power etc.. but at present it looks like the wonderful,wonderful usb-bridge is getting a little bit older, and a few days ago in searching for the reason i plugged again the external 5V power supply in and hooray: the stuttering was gone and the tune/sound really improved again, so great, the positioning, the absolutely more exactly tone and so on !!
really,really wonderful bridge !!

(i´ve got the luck that i´ve got the „deluxe“-version with the golden Crystek + some other modifications; absolutely superb !! i´ve read somewhere else that the skysong-bridges are the ones with the „finest“ xmos-implementation and so on..i can absolutely confirm it from here !!)

the interesting thing is now that i was/am an absolutely Raspberry Pi-I2S-ESS Sabre-board fan/defender, absolutely superb sound, absolutely jitterless and so on (in comparison to any PC-soundcards or other DACs etc.) i must say, that such a combo with this skysong-bridge + nowadays USB3.0 (which had also a great effect on the „tune“ here (vs. the old USB2.0)) is really close/tight to it !!
it is an absolutely improvement via USB3.0 + some external power supply (as said), really close to some Raspberry Pi->I2S connection..

by that „Johnson Wu“ had a very interesting question (here in the comment-section on the right) concerning real „DoP“(DSD) sound with DSD-lock-light ON on the Essabre-boards->look at the comments on the right (or at the bottom of this post->http://essabre-90xx-rpi.sfb2.com/2018/09/volumio-now-at-v2-452-did-it-dsd-lock-light-on-es9038q2m-alsamixer-archphile-xmos-usb-audio-etc/#comment-1148

more to come,many greets for now !! 😉

The AD797BRZ arrived -> more „dark“-sound, more in the back/laid-back..

so, 😉
finally the AD797BRZ arrived here (all following is under the „premise“ that i´ve got original (or near to) ones and not cheap „crap“)->absolutely more „dark sound“, absolutely more push in the lows/middle-lows..
(as presumed->“the BRZ were the ANZ with all the advantages of an OPA627AU..“,“its like going from digital to vinyl“..)..
absolutely okay, high THD+N, very „exactly“ , very good Op-Amp, but for me absolutely too dark, not soo much presence (at all and in the middle-highs/highs..)..

(but also said: i have got not the time (and fun) at present to get more in-depth with the BRZs)
after replacing them with the ANZs:->thats for me the right direction..
get so a better idea of the „true/right“ sound..(for me)
(i really miss the „brilliance“ of the AD797ANZ (in any case from the ones i have here)(although, as said, i also miss the „push“ in the low/middle-lows))..
but all this depends very much on your other „gear“, speaker, amplifier, room-size, listen-preferences and so on..
so, conclusion:
i will stuck here with the AD797ANZ for now (on the „blue“ ES9038Q2M)(all according to, as said, that i´ve got the original (or near to) OP-Amps..; i would prefer them over the NE5532,LME47920,OPA2134,LME47910,Muses8920,OPA627AU->(in this order)(see this post in the forum->LINK)
but again: it really depends on your personal listen-affections and so on..
in optimizing the ES9038Q2M the next steps will be (without some hw-modding;its too complicated for me at present): connect a -+15V toroidal transformer, buy some (as last op-amp-step) Burson V5/6 and maybe use an AK4137 (see earlier posts)..
and („quelle surprise“): buy finally some new speaker+amplifier 😉

but many greets for now (+ more to come)!! 😉

„Spare“ ES9018K2M arrived / this one in blue / no significant differences..

so, 😉
as i have my old, „green“ ES9018K2M in daily use, means behind a Skysong/Singxer-XMOS-bridge connect via USB to my PC, i had lately some little „stuttering“ at high khz-rates means 192khz and so on..
thought first it could be an unstable I2S-connection (Bridge to ES9018K2M) or the XMOS-bridge itself (God beware !! 😉 ), but after some re-checks i think the ES9018K2M is meanwhile a little bit „damaged“ (daily use since a year or so)..
I´ve helped me a bit in using a greater power supply with now 15V, 2A (before it was 12V, 1,5A) and so its absolutely better, almost no „stuttering“ anymore..

despite of this i´ve ordered some ES9018K2M as „spare“ (they cost meanwhile 8,50$ incl. shipping) that i still have the full range of ESS-chips here (and which i could afford) means ES9023, ES9018K2M,ES9028Q2M and ES9038Q2M..
by that in testing out some possibilities i´ve relisten to the ES9028Q2M against the ES9018K2M and theres absolutely a huge difference (sound-wise) between them..
IMO the ES9028Q2M sounds way,way,way better than the ES9018K2M (hadnt heard the great differences at first/start)..
so if u are thinking about to buy one (ESS-chip) buy the ES9028Q2M at first (or straight away an ES9038Q2M of course)..
as u see on the picture the old green and new blue ES9018K2M have almost no differences in the PCB-layout..
On the blue one is a NE5532P vs. 5532DD on the green..don´t know if there any differences between them..

soundwise its absolutely almost the same; no improvement nor regression..
(have posted the pictures anyway, maybe its helpful for someone..)

unfortunately no other news from here, stay tuned,
many greets for now 😉

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