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:

If you switch off the main power, it certainly won't update the system clock. If you set the Date and Time to Auto-update, the iDAP-8 will catch up with the clock when you power on again. If you have connected to WIFI before, it will automatically connect to WIFI after powering on, if you...

This is a WIP project, we haven't finalized the industrial design so it might look differently by the time we launch it in 2025. It is transportable so we designed it to run on battery or AC power. This will be Cayin's first attempt at an AIO (All-in-One) product and the player section will...

I find it interesting to describe the limitation as a "manufacturer claim". For those who are interested in pairing Susvara with HA-3A, I would like to quote my previous sharing here: One distinctive R&D objective is to develop HA-3A for the best quality within certain limitations. It is not...

Where did you store the update zip file in your TF card? Directly under the root directory?

When you perform Music Scan, the DAP will refresh the music library according to the current content of your SD. If you didn't perform Music Scan, you can only view the newly added file through Folder view.

The same argument applied, there isn't any external power supply that can bypass the battery and feed the C9 or the N7 directly. In both cases, you are charging and playback simultaneously.

I'll check with our Sales to find out if we can sell the cable through our Alibaba shop.

When we say unamplified output, we refer to bypassing the headphone amplifier circuit completely. We can have a low gain voltage amplifier in line out/pre-out application, which is necessary in most implementations. Even with line out, to reach 2V single-ended and 4V parallel, you need to have...

The 170HA power supply is tube rectified. To stack the external power supply under the amplifier, we need to install the rectified tubes in the amplifier chassis and run the cable down to the external power supply separately.

I am very interested in this pairing too. After I auditioned for the original RAAL SR-1B, I was stunned and wanted to find out if I could use it with our amplifier. I wrote an email to Danny of Requisite Audio asking if the HA-300 is remotely possible, and the answer is not feasible. Now that...

Since I have managed the RU6 and RU7 discussion threads, I have learned that not all USB-C cables are the same, and the audiophile cable descriptions are not particularly helpful. First of all, the cable must be OTG-ready, we have noticed a lot of PD-certified cables that are brilliant for...

The N3Ultra comes with Dual Line Out capability. The 3.5mm port (next to the USB-C port) is a dedicated single-ended line-out connector, you can connect M3Ultra to a portable amplifier with a 3.5mm to 3.5mm stereo interconnect. If you want to connect N3Ultra to a desktop amplifier you'll...

This is Scheduled Power Off, We have this feature in our Linux-based DAP such as N3Pro, but we couldn't implement this feature in this Android environment. The feature does not mean to show up in the N3Ultra menu, we have removed the edit pull-down menu function since v1.1 and removed this...