The Zishan dsd's corner

[londere]

The remove blocking caps mod. Just remove and replace with jumper wires for both caps?

for ak4499 see post by @maxifuny

 

[numon]

hi
pease dsd 4497 usb dac users answer question please
when i use dsd single 4497 via my phone via usb dac , dsd uses my phone battery very badly(20 minutes music playing uses 10 percentage battery of my phone(5000 mah).after firmware is this fixed.??why dsd dont use own battery.this is very annoying.i am using with usb y cable (one cable to power supply) but that way can not be portable.

 

[maxifuny]

Just remove and replace with jumper wires for both caps?

yes

 

[maxifuny]

But... It's still working

It's normal. Just filtering the power will be worse.

 

[maxifuny]

DSDs Dual 4497 (4562 replace with ad826/ad827)

 

[londere]

yes

hey, @maxifuny in the latest post you upgrade the 634 resistors to 2k, which is the benefit of it?, also I see you propose a 100uf in the gain opamp, those are power filters?

 

[londere]

hi
pease dsd 4497 usb dac users answer question please
when i use dsd single 4497 via my phone via usb dac , dsd uses my phone battery very badly(20 minutes music playing uses 10 percentage battery of my phone(5000 mah).after firmware is this fixed.??why dsd dont use own battery.this is very annoying.i am using with usb y cable (one cable to power supply) but that way can not be portable.

In my case U1, DSD 4499, GAD Dual 4497, had a basic implementation of USB protocol leading to the battery consumption as you mentioned, it cant be fixed via FW, maybe via USB cable.

 

[Setmagic]

In my case U1, DSD 4499, GAD Dual 4497, had a basic implementation of USB protocol leading to the battery consumption as you mentioned, it cant be fixed via FW, maybe via USB cable.

It's a hardware problem. Just don't have USB reciver and all signal is simplest way by DAC 16/48khz with massive delay software buffer not hardware one.

 

[raabje]

hello forum, I have a problem with DSDs with dual ES chip.

background info is in this thread: https://www.head-fi.org/threads/zishan-dsds-hifi-player-thread.936961/page-7

I don't want to double post, excuse me if I do, my question is, how to download firmware 0.5d. Is there a way to get in contact with Zishan?

 

[Setmagic]

How much WIMA?
Yes.

 

[maxifuny]

hey, @maxifuny in the latest post you upgrade the 634 resistors to 2k, which is the benefit of it?, also I see you propose a 100uf in the gain opamp, those are power filters?

1) working time and heating. 680 ohm - 2k - the less, the more heating
2) no, this is not a filter, this is for powering the amplifier. The bigger, the better

 

[maxifuny]

Yes

No. =)))

 

[maxifuny]

hello forum, I have a problem with DSDs with dual ES chip.

background info is in this thread: https://www.head-fi.org/threads/zishan-dsds-hifi-player-thread.936961/page-7

I don't want to double post, excuse me if I do, my question is, how to download firmware 0.5d. Is there a way to get in contact with Zishan?

Probably the problem is in the card reader. I had it more like it, I soldered contacts

For firmware - write to the seller, they can find the firmware without any problems

 

[maxifuny]

I got my 9038. I improved it as best I could =)
Hope this helps you.

capacitor near ADA4898 can be placed smaller - 220 - 470uF
a capacitor near 9038- 220 uF 6.3-10V AVX

 

[Setmagic]

No. =)))

True, I realize about my mistake about placing caps nearby LPF. Sound goes muffed.
How about caps nerby DAC chips?

Can I place caps same as Your DSDs sabre?