Monat: Januar 2019

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

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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..

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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..

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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 😉