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
I am a end user in hong kong , mine is a level 3 version (but my jensen cap is still on the way), and i have option to upgrade the audionote silver isolate transformer which in front of the digital in, which make huge improve over the cheap one inside, before that i am a metrum pavane owner, i am very happy with pavane , it provide a very smooth and organic sound , strong and defination bass, sell it because to save some money, and for the holo spring performance, it really close to pavane but not better, but consider the price , it almost outclass similar competitor, and i am waiting for my jensen to make a final judgement

Hi Gary, are you able to elaborate on the Audionote silver transformer option as I am in the process of ordering. Thanks, Greg
It uses the AK 4137 chip which is third in the "Velvet Sound" line-up of chips from AKM, used also in all Esoteric players and dac's.
Interesting that the AK 4137 can be implemented as R2R.

http://www.akm.com/akm/en/product/featured/velvetsound/

http://www.akm.com/akm/en/product/datasheet1/?partno=AK4137EQ&link_id=link760
I am a end user in hong kong , mine is a level 3 version (but my jensen cap is still on the way), and  i have option to upgrade the audionote silver isolate transformer which in front of the digital in, which make huge improve over the cheap one inside, before that i am a metrum pavane owner, i am very happy with pavane , it provide a very smooth and organic sound , strong and defination bass, sell it because to save some money, and for the holo spring performance, it really close to pavane but not better, but consider the price , it almost outclass similar competitor, and i am waiting for my jensen to make a final judgement
Has anyone placed an order and received this dac?
Would be nice to hear impressions through loudspeakers too.
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
The review is with headphones come on. I can really tell what that dac can do.
Very much looking forward to listening impressions from those who finally get this dac into their homes. :)

This morning I just got word from HOLOAUDIO HQ that they are back in stock, earlier than anticipated. but a very limited supply
Tim, good of you to drop by.
Those who have indicated their interest can start ordering now.
A very big Yay for them!

George, 

FYI, I've talked with HOLOAUDIO this morning and a small amount of jense caps have become available. But I'm working on how many of these dac's can be acquired,  Those who email me with their interest will be first come first serve. I'm posting a message this morning with an update. 115V is typically what we sell as KitsuneHifi is a USA based company. But other requests can be made via email. Thank you,

-Tim Connor
KitsuneHifi
I'd enjoy  the opportunity of  directly comparing their level 3 Spring DAC with my organic sounding Yamamoto DAC. I had the Metrum Octave DAC (R2R/multi bit chip  concept)a few years ago.  It was in fact very good but head to head I preferred the Yamamoto and sold the Octave.   The Spring DAC could possibly be better than the Metrum. It'd be an insightful endeavor. 
Charles, 
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
Ahendler,
You raise a good point regarding DSD.  If the implementation of this DAC is high level it could be excellent for Redbook CD playback. 
Charles, 
How do they do DSD if it is true ladder dac? Do they oversample. This would ruin it for me
Alan
This looks like a very good designed and implemented product. Their level 3 version could be quite special. It offers upgraded Jensen capacitors in the power supply and a silver wired 100VA transformer (green label). No question that higher quality transformers and power supply capacitors make a significant difference. Internally it appears to be very well built. Interesting the builder recommends the Audio Horizon Platinum fuse as a desirable option. True R2R ladder architecture. Isuspect that this DAC (particularly the level 3) could be exceptionally good sounding . I'm curious as to their approach to I/V  conversion (an important variable). Their pricing seems very fair given what’s provided. I wish them well.
Charles,