[Tamirci]

​

Specification and pictures here - Head-Fi product page​

Reviews:​

• Syncaine professional review - article in Russian (text, pictures and video - you can translate using Google for example)
• Countryboyhk impressions - post in Head-Fi forum with photos
• Fe Lix Ramearez impressions - screenshot from Portable Audio Philippines - PaPhi
• Dan Taytay impressions - screenshot from Walnut and Zishan Enthusiasts (WAZE)
• Unboxing VIDEO and features show off thanks to SomeEntityThing
• My impression - vs DSDs Dual 4497
• Unolord impression
• Belrat impression
• Mindblowing impression

Measurements:​

• Cqtek impedance output test for SE and Balanced
• Cqtek IEMs working test
• Cqtek noise and frequency response
• Syncaine Right Mark Audio Analyzer Sumary

MODs ideas:​

• Z4 MOD update 08/09/2021
• maxxkur DSDs 9038 MOD (similar Z4 DAC design)
• maxifunny DSDs 9038 MOD (similar Z4 DAC design)
• Георгий88 Z3 and DSD DIY chasis for 3D printer (idea for Z4 PCB design)
• adjusting buttons hardness (soft buttons MOD)
• Mr.HiAudio 3D print buttons (great custom buttons for download)
• Mr.HiAudio better 3,5 ground solution (+ mini filtering mod)

PRO TIPS:​

• To enable balanced output, in 0,1V of firmware. Need to go to Main Menu -> DAC Setting -> Balance and turn on.
• After transferring files by Charging (speed 4,5 MB/s max) port press middle button on Z4 and after that safety remove device from PC (details by HashSlingingSlasher)
• For daily PC DAC usage, it's always better to plug Charge port to prevent power save option. Best to use good USB charge. Without SD card, connect charge port to PC, transfer files don't run. We can just safety remove device from PC as well - as Hash said.
• Coaxial USB-C output will be available soon with dedicated USB-C cable.

Download:​

• USB DAC Drivers (Windows)
• Firmware V0.3 (newest a lot of improvements)
• Firmware V0.1 stable (first version + Bluetooth FIX)
• Firmware V0.2 (BETA + change log)
• Manual (basic manual, extended is only in Chinese for know)

Issues report:​

Hardware​

• Sensitive for any electromagnetic interference like smartphones close to device. USB DAC mode can interference as well. Sound can lag randomly because of very low quality or damaged PC power supply who affecting USB ports on general. Rapid battery charging in laptop with bad filtering can also cause same troubles.
• There are 2 versions of Z4: 5 (first one - early versions) and 6 (last one). 6th have way better Bluetooth antenna and much stronger signal.
• BT signal in 5th (first release) version is not as strong as Fiio BTR3K and BTR5.
• Buttons are really hard to press, but it's a solution for that in MODs ideas.

Software bugs
V0.1 + V0.2

• Inverted L/R channel in Bluetooth in first version of stock V0.1 (without fix) and possible on beta V0.2 Please download stable V0.1 + BT Fix version from download section.
• Possible MONO sound in V0.2 in DAC USB mode.
• When music play in main screen can't show long names of songs by scrolling (typical Zishan early FW stuff)
• Can't reward songs when playing (typical Zishan issue)
• Can't remember time code of last song after power off. So it's still not good for long audiobooks (typical all Zishans stuff)
• Problem with DSD 256 11.2896Mbit/s its cracking (will be fixed in next update).

- This post is in rolling updates -
[18/10/2021]

If You want to add some information, MODs, reviews or impressions in 1st post, please PM me.​

Thanks for the great post. Please update v0.3 firmware v0.3 link. Clicking the link is leading to an error.

 

[manepipoca]

Thanks for the great post. Please update v0.3 firmware v0.3 link. Clicking the link is leading to an error.

http://zishan.ru/

 

[Tamirci]

http://zishan.ru/

Thanks man

 

[LaughMoreDaily]

http://zishan.ru/

Zishans a Russian device?

 

[Mr.HiAudio]

Zishans a Russian device?

of course

no, just the site was created by fans from Russia

 

[buzzbuzz]

Someone please tell me whether Z4 BT mode is transmission or just receiver.

Before I purchased Z4, I was planning to listen to Z4 with BT headphones.

 

[Setmagic]

Thanks for the great post. Please update v0.3 firmware v0.3 link. Clicking the link is leading to an error.

Tkank You i will add as well.

Someone please tell me whether Z4 BT mode is transmission or just receiver.

Before I purchased Z4, I was planning to listen to Z4 with BT headphones.

Z4 work only as receiver, not transmitter to bt headphones.

 

[Setmagic]

Zishan Z4 v0.3 firmware:

 

[evasb]

Bought one Z4 in BF and I like it. But the VERY low Bluetooth reach is bothering me.

I didn't want far reach, but less than 1m is very bad.

 

[Setmagic]

Bought one Z4 in BF and I like it. But the VERY low Bluetooth reach is bothering me.

I didn't want far reach, but less than 1m is very bad.

Its common issue need upgrade BT antenna in Z4.
Just need to buy Wi-Fi laptop small antenna and upgrade it is service.

 

[evasb]

Its common issue need upgrade BT antenna in Z4.
Just need to buy Wi-Fi laptop small antenna and upgrade it is service.

Any tutorial or tips on how to do this? What type of small antenna, in laptops the cable tends to be a little long?

 

[Setmagic]

Any tutorial or tips on how to do this? What type of small antenna, in laptops the cable tends to be a little long?

2pcs Mini PCI-E Wifi Internal Antenna Universal Laptop Wifi Bluetooth
https://a.aliexpress.com/_vYLL1S
Just replace

Can You paste photo of Your player inside?

 

[evasb]

2pcs Mini PCI-E Wifi Internal Antenna Universal Laptop Wifi Bluetooth
https://a.aliexpress.com/_vYLL1S
Just replace

Thanks!

Can You paste photo of Your player inside?

I just got my Z4. Do I need heat to open the Z4?

 

[Setmagic]

Thanks!

I just got my Z4. Do I need heat to open the Z4?

Yes regular dryer on hot air mode and bathroom like sucker for back plastic.

 

[Setmagic]

@evasb just look in the tutorial on Youtube how to solder Wi-Fi notebook cable.
Antenna board should be in back of battery side by side backplate.