[NotKunvinced]

No, but September just started. Still no final housing pictures available so I guess that's still in progess.

Fingers crossed we see it's final form soon. I think I'm going to end up getting one.

 

[Themilkman46290]

My wife wants one, she has wanted a tube for a while, I am very very curious. Wonder what can of mods the ruski's will come up with.

 

[Area511]

Finally available:
https://item.taobao.com/item.htm?sp...13d27faIqWVfG&id=622202607579&_u=t2dmg8j26111

I personally will maybe go for the DSDs + AD3 as I already have the U1 with the AK4493, I want something with a AK4497.

 

[IcedFrosty]

Finally available:
https://item.taobao.com/item.htm?sp...13d27faIqWVfG&id=622202607579&_u=t2dmg8j26111

I personally will maybe go for the DSDs + AD3 as I already have the U1 with the AK4493, I want something with a AK4497.

Looks good. I wonder if it'll be for sale on AE. So far it's a promising chifi DAP.

Well try DSDs with AK4499, ZiShan's current flagship. Paired with Ghost audio AD3 sounds good though, but with HELM DB12 THX AAA sounds interesting, as it'll be like: AK4499 + THX AAA.

 

[Area511]

I want something with a tube - Don't know the HELM DB12 THX AAA, seems quite interesting but 200 US$ is over my budget and it can't drive high 600ohm headphones it seems.

 

[Ynot1]

Anyone know why the tubes are different between the different DACs?

 

[Area511]

Anyone know why the tubes are different between the different DACs?

Everything is the same except for the DAC-Chip. You can also check the PCB-Pictures. Tube is a 6021, this are old tubes, they are not looking 100% the same. Maybe also different brands are used but the type is the same.

Some more pics:

 

[andersos]

US $120.70 35%OFF | AK4493 /4490 USB DAC OTG portable 6021 tube bile tube amp headphone amplifier 192K 32bit DSD lossless portable player T0363
https://a.aliexpress.com/_m0fk9Th

 

[Themilkman46290]

It's on ae for cheaper, huo Guang store, I just ordered........

 

[Area511]

ZiShan/Ghost is really offering a great customer service, someone already did OPA rolling and complained the battery got marks. ZiShan provided an installation video it's important to follow a specific order when assembling the H1. If someone is interested in the video let me know.

 

[Themilkman46290]

ZiShan/Ghost is really offering a great customer service, someone already did OPA rolling and complained the battery got marks. ZiShan provided an installation video it's important to follow a specific order when assembling the H1. If someone is interested in the video let me know.

Well, I wouldn't mind to check the video, i also tried to figure out the output impedance (I figure it will be fairly high, but I mainly use high impedance earbuds so it shouldn't affect) but the seller told me 30-300 (don't think he understands the question)
Well, I ordered it, now just need to wait for a while, got the ak4493 for $100.50. Out of curiosity who has the ad lll? How does it sound? How does it compare to a topping nx4 or a little bear b4?

Can't wait to get it in my hand, swap the op amps and possibly try another tube when the oem one breaks

 

[Area511]

Well, I wouldn't mind to check the video, i also tried to figure out the output impedance (I figure it will be fairly high, but I mainly use high impedance earbuds so it shouldn't affect) but the seller told me 30-300 (don't think he understands the question)
Well, I ordered it, now just need to wait for a while, got the ak4493 for $100.50. Out of curiosity who has the ad lll? How does it sound? How does it compare to a topping nx4 or a little bear b4?

Can't wait to get it in my hand, swap the op amps and possibly try another tube when the oem one breaks

The H1 uses a LM4562 as output OPA, which as top feature mention to easily driving 600 Ohm loads. But I didn't try it.

 

[Themilkman46290]

The H1 uses a LM4562 as output OPA, which as top feature mention to easily driving 600 Ohm loads. But I didn't try it.

I mean the output impedance not the recommended headphone impedance. If it's low output impedance, it will work well with all headphones otherwise it will only be good for dynamic driver and high impedance ones. Otherwise it may sound dark with sensitive dynamic drivers and sound overly bright with balance armature

 

[citral23]

Looks cool but doesn't make any sense, 6021 tubes are designed to operate at 100v not 30.

They should've used 6418 or something.

 

[Area511]

Looks cool but doesn't make any sense, 6021 tubes are designed to operate at 100v not 30.

They should've used 6418 or something.

I'm not a tube expert but the datasheets at least also show the operating curves for 50v, maybe someone can explain how a tube is operating with much lower than nominal voltages.