[Setmagic]

I have no idea all the problem are you talking about but to my ears the 4499 is amazing and the 4497 doesn't come even close

Single core DAC 4497 old versioersio is worse but new one with Dual 4497 is very close to single 4499 - this one have dual core DAC inside 1 chip.
My opinion is based only on posts from diffrent forums. On Russian biggest forum is a lot of measurement and study of sound quality and project design of all Zi models

 

[fabien32]

Ok, if you say so

 

[Area511]

Russian biggest forum is a lot of measurement and study of sound quality and project design of all Zi models

Do you have a link to this forum?

 

[Setmagic]

Do you have a link to this forum?

This is main discussion last page: http://player.ru/showthread.php?t=180748&page=431

 

[goldgears55]

I got my Zishan DSD AK4499 Nor version, and l used them for more than a week. In term of soud quality, it's amizing on its price. But I got a probem that the music albums/folders after 5th page did not show up the song list for all album. I have installed more than 80 album/folders on the micro SD card, but only 45 folders could show up the songs in the folders. Try to put the reset button or turn off the power switch, but problem still. Anyone have the same issue or can advise to solve the issue?

 

[goldgears55]

I got my Zishan DSD AK4499 Nor version, and l used them for more than a week. In term of soud quality, it's amizing on its price. But I got a probem that the music albums/folders after 5th page did not show up the song list for all album. I have installed more than 80 album/folders on the micro SD card, but only 45 folders could show up the songs in the folders. Try to put the reset button or turn off the power switch, but problem still. Anyone have the same issue or can advise to solve the issue?

Just found out that's caused from the quality of SD memory card.!

 

[JoZeR]

Hi everyone. I'm new in this forum. I have the Zishan T1 ak4497, but I can't use it with the pc. The zishan dsds ak4499 can connect to a computer like dac (external sound card) ???.
I want it to listen to music, generally. is it good for games ?.
help me know if I buy it on 11.11. yes or nop

i started with the zishan z3 + opa1622, then with T1 + muses8920

 

[Setmagic]

@JoZeR Yes you can connect 4499 and Dual 4497 by USB to PC but have terrible 1-2 seconds delay in sound. You can't wach YouTube or movies and forgot about play any games. I tried almost everything to shorter this delay but failed. Zishan DSDs have wonderfull sound but have some kind of buffer delay even playing songs from SD card. Can't play fluently file by file. I think is a hardware "issue".
Remember also about bad implementation of amplifier section in AK4499. 2,5mm need balanced amplifier and 3,5mm PO have trouble with sound polarization.
I bought Dual 4497 becouse good 2,5mm and 3,5 line out from factor. 3,5 headphone ou in 4499 and 4497 need modifications.

 

[Setmagic]

I am very happy about replacement to LT1364 in 3,5mm how about better replacement of OP275? AD8620 is in best version of DSDs. Is any better op amp who can work in this board design?

 

[Themilkman46290]

5%OFF | HIFI Reference PA3S+ Portable 4.4 Fully Balanced Headphone Amplifier 2.5 Headphone 3.5 Player Decoding Portable Ear Amplifier
https://m.de.aliexpress.com/item/1005001592082349.html?trace=wwwdetail2mobilesitedetail
Found this amp, has a 2.5mm balanced in and claims to be full balanced
For those looking of how to take advantage of the balanced out

 

[IcedFrosty]

I am very happy about replacement to LT1364 in 3,5mm how about better replacement of OP275? AD8620 is in best version of DSDs. Is any better op amp who can work in this board design?

There's a community that really admired the sound of AD8066. Maybe you can try those as the LPF section.

5%OFF | HIFI Reference PA3S+ Portable 4.4 Fully Balanced Headphone Amplifier 2.5 Headphone 3.5 Player Decoding Portable Ear Amplifier
https://m.de.aliexpress.com/item/1005001592082349.html?trace=wwwdetail2mobilesitedetail
Found this amp, has a 2.5mm balanced in and claims to be full balanced
For those looking of how to take advantage of the balanced out

Nice. Now the 2.5 balanced out of the 4499 is useful. But i don't really see a "trusty" reputation there. Is it safe?

 

[Setmagic]

There's a community that really admired the sound of AD8066. Maybe you can try those as the LPF section.

Nice. Now the 2.5 balanced out of the 4499 is useful. But i don't really see a "trusty" reputation there. Is it safe?

Thank You!

Did someone measure balanced out 2,5mm of Dual AK4497? In 3,5 have 11,5Vpp and 400mw how about balanced?

 

[Themilkman46290]

There's a community that really admired the sound of AD8066. Maybe you can try those as the LPF section.

Nice. Now the 2.5 balanced out of the 4499 is useful. But i don't really see a "trusty" reputation there. Is it safe?

Not sure how trusty it is, but I have bought off this seller and had no issues so far

 

[jacquesjr]

ZiShan DSDs
Upgraded model of ZiShan DSD audio player, available in 2 different versions:

1. ZiShan DSDs Dual AK4497EQ, featuring;
- PCM playback: up to 32bit/384kHz
- DSD playback: native DSD up to 11.2MHz (256)
- DAC: AK4497EQ*2
- LPF: OP275*2 (Soldered)
- AMP: LM4562 (Rollable)
- Output power: 400mW @32Ω
- MCU: STM32F7
- CLPD: Altera Max II
- Crystal oscillator: Dual; @45.1584-MHz ,49.1520-MHz
- PO: 3.5mm
- BO: 2.5mm AK
- LO: 3.5mm
- Coaxial: 3.5mm TS
- Display: 2.4" WQVGA
- Operation method: 5 physical buttons
- EQ: 180 preset, custom equalizer available
- Sound filter, DSD frequency cutoff, sound quality, sleep timer options, etc are available
- USB port: Type-C (Combined charging and USB DAC ports)
- Relay: Axicom IMO 1 3VDC (PO only)
- USB DAC: fixed 16bit/48kHz
- SD Card expansion: 256GB (FAT32 required)
- Battery: 3.8V 3000mAh
- Body dimensions: 80mm x 58mm x 24mm (H x W x T)

DSDs AK4497:
~ Inside


~ Block diagram



==//==


2. ZiShan DSDs Single AK4499EQ, featuring;
- PCM playback: up to 32bit/384kHz
- DSD playback: native DSD up to 1bit/11.2MHz (256)
- DAC: AK4499EQ
- I/V: Pro version; AD8620*4 LPF (Soldered) / Normal version; OP275*4 (Soldered)
- LPF: Pro version: MUSES02 AMP (Rollable) / Normal version: LM4562 (Rollable)
- AMP: BUF634*2 (Soldered)
- Output power: 400mW @32Ω
- MCU: STM32F7
- CLPD: Altera Max II
- Crystal oscillator: Dual; @45.1584-MHz ,49.1520-MHz
- PO: 3.5mm
- BO: 2.5mm AK (note: when you use the 2.5mm balanced port, you must connect an amplifier or a balanced pre-amplifier.)
- LO: 3.5mm
- Coaxial: 3.5mm TS
- Display: 2.4" WQVGA
- Operation method: 5 physical press buttons
- EQ: 180 preset, custom equalizer available
- Sound filter, DSD frequency cutoff, sound quality, sleep timer options, etc are available
- USB port: Type-C (Combined charging and USB DAC ports)
- Relay: Axicom IMO 1 3VDC (PO only)
- USB DAC: fixed 16bit/48kHz
- SD Card expansion: 256GB (FAT32 required)
- Battery: 3.8V 3000mAh
- Body dimensions: 80mm x 58mm x 24mm (H x W x T)

DSDs AK4499EQ:
~ Inside


~ Block diagram

(Couldn't find the block diagram for the 4499 so i decided to make one by my own.)



Gallery:

Front & rear	Top & bottom	What you'll get	Quick start guide

Playback support	ZiShan player comparison	Sound filters	Sound quality setting

(Open links down below to see more information.)



Links:
∆ You can get DSDs AK4497 here on AE:
https://www.aliexpress.com/item/4000785853010.html
∆ You can get DSDs AK4499 here on AE:
https://www.aliexpress.com/item/4000786175396.html
∆ Firmwares:
https://pan.baidu.com/s/1vFVaDb6TuRP6JdYJD0xKfA
Password: 0brr



Updates:
None so far.



NOTE:
If your DSDs is draining a lot of battery and exhibiting a lot of heat, you might want to turn off the "Turbo" DAC setting. That way, your DSDs will have an extended battery life and less heat.

P.S. I know the DSDs is kinda "cold" now, but due to requests and the fact that the DSDs is a different line up from the old DSD, so I decided to make it happen. And there you go, i hope this thread can be useful.

Stay healthy,
God bless

 

[jacquesjr]

I have the latest firmware but the files and folders are all in disorder.
musicfiles are sitting randomly in folders and folders aren’t in alfabeticle placed.
Anyone an answer?