HOLO Audio Spring DAC: Affordable discrete R2R Multibit Dac, could be a winner.


Many manufacturers are going back to R2R Multibit d/a conversion, a good portion of audiophiles are saying it sounds better than the cheaper d/a conversion of Delta Sigma, (1 bit), Bitstream, Saber. etc.
And it says it uses dual R2R’s Multibits to support DSD natively!!? 

Product Description:This new DAC.”Spring” is the first design of a new era, a milestone for HOLO Audio’s own Jeff Zhu. It’s a full discrete R2R type of audio decoder and does not have off the shelf-DAC chip! This is a bespoke custom-designed core DAC module and truly a breakthrough with technology for any DAC chip today. The Spring is here to achieve new heights, new dynamics and simply a full spectrum of audio to please the aural senses. This Dac has been called the poor mans Total Dac / MSB / Wavedream / Chord Dave Etc. It plays with the big boys.

https://kitsunehifi.com/product/springdacbase/

Looks amazing inside for $1,700. Schiit Yaggi better watch out!!!!



Cheers George
128x128georgehifi

Showing 21 responses by georgehifi

I am not interested technology-wise, but sound-wise.
Lots of initial excitment over at SNA forums.
New Holo Audio Spring Dac - R2R and DSD
  • By rocky500, August 28, 2016, 492 replies, 23,055 views
http://www.stereo.net.au/forums/topic/110550-new-holo-audio-spring-dac-r2r-and-dsd/


This shoot out between the $10kaud Metrum Pavane and the $2k Holo, both are R2R ladder Mutibit dacs, so it may not interest you, if you prefer Delta Sigma based dacs, which the Bryston is.
http://earphiles.org/index.php/2017/02/04/metrum-pavane-vs-holo-spring-dac/

Cheers George
Stripped down Spring with first ever tube output!
http://dastereo.ru/t/holo-audio-spring-dac-r2r-dsd512/2075/2976?u=dmitre

WTF!!! Can someone who can understand Russian, say what just happened to that dac, with all the drilling and whatever.

Cheers George
The Exogal Comet Plus has been garnering a lot of nice reviews.
Yes this would be interesting as the Comet+ is a different conversion topology, as it's bitstream Delta Sigma (PCM4104) geared towards DSD.

With PCM (Redbook 16/44 or 24/96 or DXD) media it will be interesting to see which one wins out, my bet's on the Spring being R2R Mulitbit.

Cheers George 
Those of us who firmly believe that R2R Multibit is the best type of conversion for PCM, even though DS shows to have "some better" measurements
Here for those interested in it, is one of our Aussie digital guru’s opinions of the measured performance of this Holo dac, screen shot measurements are on the page before.

http://www.stereo.net.au/forums/topic/110550-new-holo-audio-spring-dac-r2r-and-dsd/?do=findComment&comment=1727285

Cheers George

Yes you are right JWM but that’s all we have at the moment and are still good reading if understood.
Good analytical sound reviews without any "hocus pocus" are a bit thin on the ground as of yet, just need some more buyers to take the plunge to give those reviews without knowing what their buying.
I hear there are 2 of this Holo dacs at the RMAF show can anyone confirm this?

Cheers George
For those here that have some digital technical and diy ability and who know at least some Ohms/Kirchoff’s laws, you can put together your own discrete R2R Multibit dac with volume very cheaply designed by Soekris, for around a couple of hundred bucks, and sorry they don’t come with "voodoo" fuses.

https://hifiduino.wordpress.com/2015/03/16/soekris-dam-1021-r-2r-dac-users-guide/

http://soekris.eu/shop/dac_modules_diyline_dam1021_en/

Cheers George






Charles, I was enjoying this review up until this statement.

We replaced the stock fuse with a Synergistic Research Black fuse and there was genuine improvement. Take that as you like.
Then I’m afraid you lost me, take that as you like, but an incoming mains fuse on especially a well regulated power supply as any dacs have, will not make one iota of difference. What you and your friend most probably heard is what Ralph (Atmasphere) coyly calls "expectation bias" with regards to fuse swapping.

But I still like very much what Holo have done circuitry wise and especially price wise, so I’ll wait for more informed reviews to come along as well to point potential buyers and customers of mine to.

As for them the retailer/distributer (not the designer) having these fuses advertised on their website, they are a retail/wholesale outlet with many audio products and are also there to make a buck as well.

Cheers George

Hey! it wasn't just me that said it was a poor review, regarding how it sounded. Over on the SNA forums they are saying the same.

Cheers George

 
pixelplay

Good review of the sound got with this dac in just 2 paragraphs.
I take it with PCM, 16/44 or 24/96 or DXD?.
Later one doing DSD would be nice as well if you have any?

Cheers George   
bimmer100

Bimmer, your connected in some way to Holo, get them to give a review sample to Stereophile for a real review and if JA’s lab tests concur with what the reviewer hears, which "can sometimes" keep them honest.

Cheers George

Finally a review, BUT!!!! it’s done by a computer/software geek, with more emphasis on what the source is, and not much in the way of how it sounds, especially nothing when being fed PCM, 16/44/24/96 or DXD pcm, which is where it should shine.

http://www.computeraudiophile.com/content/722-holo-audio-spring-level-3-kitsune-tuned-edition-r2r-dac-review/

Cheers George
Because all digital domain volume controls "bit strip" if not used at or above 75% of full volume.
EG: The lower you go the more they strip, 16bit, 14bit, 12bit resolution.
That’s why it’s best to leave them at full and use a 10kohm passive preamp, like the $49 Schiit Sys. If your poweramp is 47kohm input impedance or higher.
http://schiit.com/products/sys

Cheers George
I think listening to a pair of HD800's or even HD650's with a good head phone amp is very revealing, once you've given them a chance and gotten used to them for a while.
At first yes the head-space thing is a bit disconcerting, but shut the eyes and lay back with a nice drink, and they can be very very good. (And no you don't need more drink.)
  
Cheers George
Just looked for purchasing, and all three versions are out of stock.

Cheers George
ahendler
How do they do DSD if it is true ladder dac? Do they oversample. This would ruin it for meAlan
I’m no digital expert, but I think it’s the same way as MSB do it on their mega dollar flagships with multiple multibit dacs, that are also discrete multibit, yet able to do native dsd.

But there's no decent music available on native dsd anyway so why bother. And the PCM redbook 16/44 or 24/96 that's been converted to dsd "Hirez downloads to me sound at best average.
 
Cheers George