[Mr.HiAudio]

@SnooDucksAudio I think I will leave original sizes for now and just
- triple capacity of power delivery
- Replace OP275 to opa1656
- LDO for TI 5907 3.3v
- Maybe some BT improve because it's not as good as BTR5

@update
Some new impresion from Philippines audio community thanks to Hash from Audiogon:

Spoiler: Long screenshot

Need slow AMP, no 1656 , opa2156 for example
And, can you give me a link for this post?

 

[Setmagic]

Zishan can't decide between AptX-HD and LDAC


Good to have Dual Core utilize indicators when MP3 is decoding

All credits of photos © Fe Lix Ramearez from Portable Audio Philippines - PaPhi

 

[Setmagic]

And, can you give me a link for this post?

This is from closed FB group call "Portable Audio Philippines - PaPhi"

 

[Mr.HiAudio]

"hard to press button" - sad to hear this, apparently because of the metal buttons. It turns out that control through the pocket will not be as easy as in the DSD

 

[Setmagic]

Need slow AMP, no 1656 , opa2156 for example

opa2156 is not from SoundPlus familly - 1656 is - just a Hi-End Placebo

 

[Mr.HiAudio]

opa2156 is not from SoundPlus familly - 1656 is - just a Hi-End Placebo

it's just that your sound will be very harsh. 1622 is a fast enough amplifier and in place of the filter you need something slow, for example the original 275

 

[Setmagic]

it's just that your sound will be very harsh. 1622 is a fast enough amplifier and in place of the filter you need something slow, for example the original 275

OP275 have 9MHz - OPA1656 53MHz
Zishan uses original 275 they are cheap.
Never compare sound of opamp by MHz speed
My Burson V6 classic have 52MHz and they are smooth like butter

 

[SnooDucksAudio]

There is however one problem I don't like about the Z4. The screen directly behind the analog section board. I can't shield in between.

 

[SnooDucksAudio]

There is however one problem I don't like about the Z4. The screen directly behind the analog section board. I can't shield in between.

I can shield from behind but not from the front. Unlike in DSDs, the board is separated into two, I can then shield from both sides.

 

[Setmagic]

Everything is on one PCB.
Analog and digital parts I think shielding I no needed anymore because it's dosent help in these design.

 

[SnooDucksAudio]

Need slow AMP, no 1656 , opa2156 for example
And, can you give me a link for this post?

OPA2156 may also help with the ESS Digital glare. By adding a bit of grain in the sound. Opposite of AKM Velvet, but grainier sound. A bit only.

 

[Setmagic]

@SnooDucksAudio AKM in my ears is not so Velvet sound. Old AKM was way better for example miracle DAC 4397.
Or Wolfson smooth warm sound in highest models. They was amazing but not as good as old AKM.

 

[Mr.HiAudio]

@SnooDucksAudio AKM in my ears is not so Velvet sound. Old AKM was way better for example miracle DAC 4397.
Or Wolfson smooth warm sound in highest models. They was amazing but not as good as old AKM.

was once Zishan on Wolfson

I too love Wolfson's sound how it realised in ibasso dx50

 

[Setmagic]

That was in previous century
I can imagine in next few years Zishan will make pure R2R DAC not delta-sigma.

 

[SnooDucksAudio]

That was in previous century
I can imagine in next few years Zishan will make pure R2R DAC not delta-sigma.

But resistors at 0.0005% is ridiculously expensive, no matter how bulk it would be, still costs more than 1000usd.