Planar needs more current in my experience. :beerchug: N6ii + A02 is a very good source even by today's standards, I can expect a very happy face when you hear your N6ii (A02) + C9 + Arya Organic.

We have received several EQ/PEQ questions from PM, email, and forum discussion after we added this feature in the v1.6 Firmware. To make our users understand the strengths and limitations of these new features, I have decided to consolidate related information into one post and pin this to the...

Please understand that DSD is a 1-bit-based format, it doesn't allow DSP processing like multibit formats. You can consider DSD a non-editable format. For this reason, Mastering Engineers will need to employ an interim format such as DXD to perform their usual DSP or plugins during the...

Cayin has prepared a premium protective case for your beloved N3Ultra. The PU Leather case covers the N3Ultra completely from top to bottom with a magnetic flip on top. The dusky purple color with gold-tinted thread and a meticulously designed vacuum tube icon combine elegance and passion for...

Do you need 4.4mm phone out? The Mk2 has more steps in volume control. If you want to try IEM or portable phones with 300B, get the MK2. If you only use not-so-sensitive headphones, MK1 at $1500 offers better value

Glad you like your new amplifier. :beerchug: The 22DE4 are Power Rectifier tubes and they are the stock tubes of HA-6A. We changed the rectifier tube on July 2023, and I believe your demo unit should come with one pair of EL34 and one pair of KT88 originally, ex-demo units normally sell...

Let me explain the Pre-Amp function in EQ/PEQ of N3Ultra before we discuss your suggestion. During the adjustment of EQ/PEQ, if you set the gain (or level) in some EQ/PEQ frequencies or bands to be relatively high, you might introduce distortion in certain frequency ranges at occasional music...

Yes, we are working on the remote control function before we pass the design to the production team. Thanks for the good words, I got a lot of feedback that my product announcement posts were too detailed and technical, they lost focus by the time they finished the opening post. :sweat_smile:

iHA-8 is a class A fully-discrete design, I suggest running it for around 50+ hours. Maybe putting the Ares on top of the iHA-8 might limit the heat dispersion of iHA-8? Try switching the iHA-8 to the top for testing purposes. I am not sure if this will work out better, just curious.

After multiple rounds of testing and feedback, we have finally completed the sound-turning exercises for the Soul 170HA. Our R&D Department will put everything together as our pre-production reference unit, and we are ready to move on to the trial production phase. As one of the most powerful...

In the very beginning, I used to participate in many discussions that were outside my scope as a brand rep.. In some of these discussions, I obviously couldn't solve the problem but I tried my best to keep the discussion ongoing. In many cases, we either drew the attention of someone who could...

There are reasons that I am not responding to certain questions. For example, when you said MQA is snake oil, you made it very difficult for me to comment in detail, after all, we have signed DNA and partnership with MQA and the contract is still effective. Let me find another opportunity and...

In the first branding statement after I joined Cayin full-time, I wrote: "Our company is devoted to developing the best-sounding audio equipment within budget and marketing our Hi-Fi products under the name of Cayin. Our products carry distinctive cultural connotations and span over a very wide...

I don't have this problem after the firmware upgrade, which probably means your unit has a screen mapping problem after the firmware upgrade, possibly caused by a Cache memory problem. Can you perform Erase all date (Factory Reset) under System Setting > System menu? Hopefully, this will clear...

Do you mean your N3Ultra is not responding when you click the Next and Pre button on the main playback screen?

I missed this post until I compiled the impression list on Post#2. I think you have misinterpreted Cayin's position. Are you sure we didn't reach out because the review "is not super positive"? Did we respond to Twister6's review with a big clapping hand post? There aren't a lot of examples...

We have also received one report of a firmware update problem that was very similar to your case, he ran into trouble when he updated from v1.1 to v1.2. We cannot figure out the cause of the problem, these are rare instances that can't be replicated, we can only assume this is an Android system...

We have examined this option previously, the easiest option is to implement this as the form of an Android widget, but we decided not to because this will open up a lot of possibilities that we are not comfortable with under the N3Ultra direction.

I have heard both original Utopia and 2022 Utopia with HA-3A and HA-6A at a retail shop, my friend is a shopkeeper so I went to his shop to sample different headphones when I needed to work with a new amplifier. He simultaneously uses iDAP-6 as the source, I2S or S/PDIF to 2-3 DAC, and connects...

I have updated Post #2 with links to important references, reviews, and user impressions (up to page 50) from this discussion thread. I hope the list will provide help headfiers and new comers to explore the N3Ultra effectively.

Try to find the smallest safety pin, it should work. SIM card tray is getting smaller after the industry moved to nano SIM, as a result, the ejection pin is also getting smaller.

I'll raise their attention to the inadequacy of the current UI design and urge them to improve the readability of the song list. It probably will take a while before we do anything solid but your suggestion is heard. :pray:

The 3D printed prototype will assist us in making an informed decision regarding the external design of the portable amplifier. From here on, we shall carry out further structural optimization to include internal details such as PCB mounts, suspended installation of Nutube, and rails for the...

I promised to come back when we make any progress on the C9ii. 3D printing has become an essential part of our portable product development, it is a lot more efficient than old-school prototyping when we can feed our CAD modeling to the 3D printer directly. These are snapshots from the R&D...

To make it easier for the readers, I have revised my signature, let's hope this thread will pick up more tech. discussion on portable vacuum tube applications. :beerchug: