Now we finally find out why several others said their N8ii are warm and your N8ii are very hot.
If you have defrost tray in your kitchen, maybe worth a try. Put the N8ii on top of the defrost tray and charge it at P+/Tube mode, hopefully it won't trigger the protection mechanism.
Defrost tray is not that good for food because only the surface of the meat will defrost quickly, the interior take a long time because meat is not a particularly good conductor of heat, but the aluminum chassis (and internal CNCed frame) are very good conductor, so it probably can cool down the DAP very effectively.
Yes! So the issues are found !
Read on, if charging is an issue that bothers you
This one will fast charge all day long. Its also been tested for true output and meets advertised specs unlike many others. I got it last week and its been charging N8ii and S21 like a champ. Even managed to charge a colleagues s22 on the ultra fast charging it can take whilst retaining fast charge on N8ii. It's 24w on single channel for qc3.0 and drops to 18w when the other channel has PD in use (pd does 65w single channel, 45w when both channels used.
using QC 3.0 and or other chargers that is 30W+ such as Apple UsB C or Mcbook , and it charges rapidly as well....just as long as you satisfy it 2 conditions
Heat generation and
dissipation! The player
will not charge when heat Generated is high and the dissipation can not help the player to cool down enough
Heat generation will be high by 2 condition: Either
staying in the case, or
laying atop of some thing that can
trap the heat, such as the bed, mattress, blanket.
The back of the player is a
heat dissipation area.
By taking the Player out of the case, and ensuring both the Top and the bottom are having good air circulation, you don’t even need a fan next to it, just staying in a cool ambient room at 73-74F would do the job. You can even take out the case, have the player to stay atop of the case in a cool room, and you can charge together with play back at the same time
N8ii can drain a 10000mAH battery in 7 hours, that is 3 to 4 times faster then regular mobile phones. that explained why "it charges very slowly, sometimes even so slowly that the battery level decreases over a few hours" if you playback and charge at the same time, even with quick charge.
The N8ii is NOT a desktop player, charge and playback at the same time is not the scanerio that we have in mind when we design this product. If you are looking for a DAP that can works fine to charge and playback at the same time, we are sorry that N8ii probably is not the an appropriate choice for you. It doesn't matter how expensive it is. If you need a SUV, the most expensive super sport car won't serve the purpose.
There is nothing to be sorry about. The player drains very fast, and that I agree,
but it can and it will charge during play back just fine, just as long as you don’t have it heated up, and or trapping it heat dissipations mechanism.
The N8ii will even Rapidly charge at below 90% of the battery, just as long as it is seeing the drainage is greater than the charging speed as shown in this picture.
This condition will only happen when you do have a cooling surface in the back, you can see in this picture, the player is on my countertop which is a very cool surface.
The best way to do this is to Ensure that your player will have a
cool surface onto it Back to help it dissipating the heat!
So! Do not use the case if you want to charge+Play together!
Use Charger that is higher than 30W better with QC 3.0 or Apple chargers! Under the
Tubes Mode is when the player
generate the most heat, this is when you need to ensure the proper steps to further venting and dissipating the heat, otherwise you will damage your player.
Regardless, under all conditions, the player can, and will charge + Play together just fine !
I was annoyed by this for a while, but I finally found out, and I will have to say that the engineering teams from Cayin did a wonderful job, but perhaps the marketing team did not bring it into the pictures. If it wasn’t me having the time with the Cayin C9 and it heat generation, then I wouldn’t be able to find out either.
The case will trap the heat inside, you will not feel it, but the player will be heating up.
1/ The battery on the N8ii is laying on the very same chassis, that is acting as a heat sink, which is venting the heat generated by the whole player, which is heavily and efficiently dissipated throughout the entire body,
noticeably by the BACK!
2/ Unlike the C9, the battery is not sitting inside it own Tray, which is isolated and well away from the Heat source, the battery is sharing the same heat generated by the N8ii and from within. The condition of 45-50C to trigger the protection mechanism is working well as intended.
The chassis may feel like 43C, but the internal is a lot hotter! Which shouldn’t be risked
3/ Korg tubes draw a lot of Current, and just like other tubes, they are a heat monsters....
if it isn’t heating up, it ain’t tubes, period
4/ The engineers not only accounting this heating mechanism to design the most efficient heat dissipation in a portable player that I have seen, but also taking into account how to allow rapid charging when the player cooled down, together with the choices to enable charge/disable charging when used as external DAC
That was why I said Cayin engineers did a wonderful job, you just need to understand the player. Sadly, in this days and ages, people will quickly point the fingers, rather than sitting down, staying calm, and with a clear/collective minds to figure out how to solve the problems. You are not alone, including myself, if I don’t constantly be reminding myself, then I would also be the same. Fortunately, the Forum is here, so we can all share the experiences, and how to further enjoy our little machine
The N8ii not only solved many of the problems by cramping dual Korg tubes inside a small little player, but also to ensure the longevity, and safe operation Conditions! Together with amazing sound performances!
It is an amazing player from the appeal, the engineering’s, the sound performances.
Even with just the coolest operation conditions P/AB/SS/L-gain, the player will be warmed up due to the amazing ROHM Chips inside which is a
Current output DAC of Desktop Class, even more than AKM4499EQ! The N8ii will be warmed up, if staying inside your Jean pocket, or backpack, though just as soon as you are holding it in your palm, or laying on a desk even with the case, you will have it very cool to the touch! That in itself is already an amazing feast of heat dissipation and cooling mechanism designed by Cayin engineers. You will not have any problem listening on the go, jogging, biking with the N8ii, just as long as you are staying with the coolest operation conditions! Even with P+ and H-gain, you will do just fine!
I am still waiting on the article about the cooling mechanism of the N8ii!
