Cayin didn't change the sound signature of our DAP through firmware, not with the recent N7 firmware update, not with any N7 firmware update, and in fact, not with any DAP firmware update we have maintained this policy since we launch our first DAP N6, we have received numerous requests to...

N7 cannot serve as external power supply to C9.

Glad to see you move onto a new amplifier, I am truly grateful for your contribution to the HA-300 community in the past two years. Your sharing will become an important resource to this community. Be happy with your music, I believe we'll run into each other again when we keep our passion for...

The Announcement of N3Ultra Firmware v1.2 New Functions and System Optimization Add a new double-click wake-up function; Rectify the problem of the left and right channels reversed during DSD512 playback; Other optimization and bugs fixed Firmware ULR: https://en.cayin.cn/drive/9/18/643.html...

You are always welcome and you can ask again anytime. Unfortunately, this is not within my scope or jurisdiction. If the software team requires additional information, I'll try my best to explain and put the request into context, but there is much I can do other than that.

No comment, I have forwarded the request to our engineer. The software team will evaluate the information I collected, I am not part of the decision-making process. I have no idea whether this is technically feasible, or the resources required to implement the feature.

I assume you'll connect the WP900 with the 4.4mm or 3.5mm headphone outputs of N3Ultra, in that case, the numbers you quoted are not relevant, these are the rated output level of LINE OUT, not phone output. From what you have described, I believe you are concerned about the appropriate GAIN...

Indeed, that's why I started with the qualifying statement that we "designed C9 as a battery power amplifier device", this is a very important criterion that we must clarify before we discuss the pros and cons of the product. With this in mind, this is a feature, not a b bug. :beerchug...

Maybe the Canadian dollar? what is the exchange rate of US$ to Canadian $?

Unfortunately, the JAN6418 is not user replaceable, you need to send the DAP back to your dealer or to us (China) to replace the vacuum tubes. For the record, we do run into JAN6418 occasionally, but most of them happened on the first month of ownership, a small number of them in the first...

Absolutely NOT. If you are looking for a small headphone amplifier that can be hooked to a wall AC outlet and operates as a desktop amplifier, C9 is not a good choice. There isn't any external power supply that can support C9 directly without the batteries. When you connect the charger and...

We are working on a workaround to enable double tap wake up, this is a work in progress, please be patient if you are looking forward to this feature, it won't be long.

Saw the 8-series stack right besides the HA-2A, so I guess you have dropped by our Munich high-end booth and have checked out new products as well. I hope you are impressed by the new products as well. I assume there is a set of HA-3A somewhere in the booth, or it wasn't hooked up but in...

If that's the actual signal flow, the headphone output will also bypass the potentiometer. The flows with three arrowheads are signal control circuit. To follow the audio signal, follow the regular single arrowhead path.

While I can think of several possibilities to explain or test regarding your distortion problem after you crank up the volume to 3 pm, none of them can explain why it was OK in the past and the distortion shows up suddenly, especially when you have assured that nothing has changed in between...

Thanks for the lead, I'll check this out when we have a review sample available. :beerchug:

Sorry, what is PCA? You are connecting the Holo May to HA-300MK2 via RCA, normally RCA line out is around 2V, maybe 2.2V, 2.9V is considered a fairly hot RCA line output IMO. This falls in line with the input sensitivity issue that I described previously. The Vio 590 is a DAC/Amp? Have you...

I was concerned when he said, "With a further increase in volume, distortion increases, but the volume almost does not increase." This sounds like an input sensitivity issue to me, in other words, his input level is too high, forcing the amplifier to reach the maximum rated output at the 3...

Can you describe your complete audio chain? from DAC to headphones? I assume you didn't change anything upstream when you changed the 6SN7GT to Melz 6H8C (when you noticed the problem)?

The memory management of Android systems has always been their weak point as they are not a truly multi-tasking system. If you run get stuck in the middle of an OTA update, you need to clear the cache of the system update process otherwise it will repeat the download error: Disconnect your...

Separating the high-voltage and low-voltage will reduce the ripple effect from interference, internal as well as external. Clean power requires attention to detail.

I sure hope so, but we are still months away from a marketable product, and finding a good reviewer with appropriate traffic and profile to cover this amplifier would be difficult. That is understandable because sending a massive amplifier like this back to Zhuhai after the review process will...

When the amplifier is very transparent, yes. :beerchug:

These two diagrams explain the main functions and input/output interface of Soul 170HA. We'll explain the features and design considerations in detail later, but I would like to highlight the power connection between the Amplifier chassis and the external Power Unit. Unlike the...

N7 Firmware v1.6 Update Add new PEQ functions under the Audio Setting menu Other bug fixes and optimizations. Announcement Link: https://en.cayin.cn/drive/9/18/639.html Firmware Update Cayin will release firmware updates to enhance and optimize N7 as deemed required. Users can update the...