WolfX700 Measurements of Holo Audio Spring 2 Lv2

[Music1969]

Not better than 96/24 (even considering 4db)

Noted, thanks for checking.

Best is feeding DSD256, as HQP developer has also stated in his measurements

I will link to his measurements when I can find them

 

[Music1969]

Not better than 96/24 (even considering 4db)

From HQP developer:

 

[Music1969]

@WolfX-700

 

[YSC]

Thanks WolfX, I just got the spring 2 lv2 also for about a week and a half and really satisfied, but a bit disappointed by the channel mismatch on distortion. will you have any update on that after the unit have been warmed up (always on and only mute used as factory suggest) and burnt in for a week or so?

 

[WolfX-700]

Thanks WolfX, I just got the spring 2 lv2 also for about a week and a half and really satisfied, but a bit disappointed by the channel mismatch on distortion. will you have any update on that after the unit have been warmed up (always on and only mute used as factory suggest) and burnt in for a week or so?

I will try

 

[Music1969]

I will try

Can you also retry HQP PCM1536 kHz

But this time set HQP output to 20 bits? As per screenshot from Miska I shared a few posts above:

https://www.audiosciencereview.com/...-of-holo-audio-spring-2-lv2.10678/post-296982

Also choose Gauss1 dither and poly-sinc-ext2 filter

 

[WolfX-700]

Can you also retry HQP PCM1536 kHz

But this time set HQP output to 20 bits? As per screenshot from Miska I shared a few posts above:

https://www.audiosciencereview.com/...-of-holo-audio-spring-2-lv2.10678/post-296982

Also choose Gauss1 dither and poly-sinc-ext2 filter

 

[Music1969]

View attachment 44659

I don’t see output bits selected to 20 bits though?

Miska himself said anything higher will result in distortion (with Spring2)

 

[WolfX-700]

It's set, but in the settings panel you will have no output!

I don’t see output bits selected to 20 bits though?

Miska himself said anything higher will result in distortion (with Spring2)

It's set, but in the settings panel you will have no output!

 

[Music1969]

It's set, but in the settings panel you will have no output!

It's set, but in the settings panel you will have no output!

Ok. So DSD256 is measurably best way to feed this DAC

 

[YSC]

It looks when oversampling externally the channel difference is lower？

 

[Music1969]

It looks when oversampling externally the channel difference is lower？

And with DSD256, there is no significant channel difference at all

https://www.audiosciencereview.com/...-of-holo-audio-spring-2-lv2.10678/post-296723

 

[YSC]

And with DSD256, there is no significant channel difference at all

https://www.audiosciencereview.com/...-of-holo-audio-spring-2-lv2.10678/post-296723

As I know of the spring 2 used a different ladder set for ssd and pcm, so for dsd I would think it maybe manufacture defect, but the pcm nos showing quite obvious channel difference while os pcm dont is more of a surprise

 

[Music1969]

so for dsd I would think it maybe manufacture defect

Do you mean it is a defect that SINAD is 112dB for both channels , with DSD256?

 

[YSC]

Do you mean it is a defect that SINAD is 112dB for both channels , with DSD256?

No, I mean since they use different ladder for pcm and dsd, so it makes sense the dsd is more balanced than the other as the ladder manufacture tolerance should be random within their own qc spec. So the dsd ladder shows less variation than the pcm ladder or vice versa makes sense.

but the upsampling of the pcm materials which use the same ladder as the nos pcm files shows less variation is interesting

 

[Music1969]

@WolfX-700

One final test if you can.

Any difference between DSD128 and DSD256 measurements?

HQP developer has done testing with up to DSD1024 (which his software and Spring2 USB input both supports) but he said Spring2 measurement “sweet spot” is DSD256.

 

[WolfX-700]

@WolfX-700

One final test if you can.

Any difference between DSD128 and DSD256 measurements?

HQP developer has done testing with up to DSD1024 (which his software and Spring2 USB input both supports) but he said Spring2 measurement “sweet spot” is DSD256.

 

[Frank Dernie]

As I know of the spring 2 used a different ladder set for ssd and pcm, so for dsd I would think it maybe manufacture defect, but the pcm nos showing quite obvious channel difference while os pcm dont is more of a surprise

I suppose it would have to since DSD is 1-bit at higher speed it presumably doesn't or couldn't use the ladder which is needed to decode PCM

 

[YSC]

I suppose it would have to since DSD is 1-bit at higher speed it presumably doesn't or couldn't use the ladder which is needed to decode PCM

Yea, this is why I am tempted to know if it's WolfX's unit have a worse matching PCM ladder or it really is the run in or warm up thing

 

[Music1969]

View attachment 44695

Thanks!

Very interesting