You should adjust volume on RU7 after connecting it to you iPhone. Resistor network DAC is very demanding on input integrity and max output is the only way to safeguard the integrity of digital output from your mobile phone

I read Twister's comment with interest, but I can't respond to his discussion directly because the topics involve my competitors. On the other hand, Twisters raised his concern based on the FORUM discussion norm. To my understanding, the "Bay Street (financial district) guys who bought the A&K...

I just back from the Shenzhen Headphone Expo, sorry for the late response. You'll need an HDMI Audio Extractor that provides USB Audio Class 2.0 and HDMI bypass. This kind of product is technically feasible but I have been looking for something like this in the past two years, no luck so far...

Yes, this is THE critical component of our vacuum tube amplifier, that's why we have half the floor in our facility to develop and mass product transformers in our 4-storey manufacturing facility. We design and produce all the output transformers and power transformers in our speaker amplifiers...

The 170HA demo unit in Munich High-End is an engineering sample, we demoed another engineering sample at the Shenzhen Headphone Expo last weekend. The two samples use different winding in the output transformers. The Shenzhen sample has slightly smaller output power when compared to the Munich...

The Cayin Soul 170HA debuts in Mainland China today at Shenzhen Headphones Expo 2024. This is a 3 days events starting 9 am today (17 May), I had a brief audition before the crowd of audience arrived, and took some photo for the benefits of those who can't attend this event. Yes, that's 99.9%...

That probably means the scanning process ran into a music field that they can't process, reason varied from special symbols in filename or key ID3 field in metadata.

You can disable the home button wake up by disabling the "Double Click Wake Up" feature through System >Gesturers menu. The folder view is fairly reliable in our experience, can you provide more information regarding the folders that aren't available? You can drop me a PM with more photos if...

Thank you for your interest in N3Ultra and for devoting your precious time to discussing the player. DAP belongs to the Personal Audio segment, it is a personal choice, so we'll have vastly different needs and preferences, this applies to both audio preference and usage preference. The...

Unfortunately, you cannot roll back the N3Ultra firmware. We would have offered that if we could. We offered firmware rollback on N7, N8ii, and N30LE, this is a system limitation on N3Ultra.

You can disable or enable "Double Click Wake Up" through the System > Gestures menu. I don't have more information regarding point 3.

My previous writing was trying to clarify the claim that "JAN6418 tubes have an estimated life span best case scenario of 1 to 3 year", nothing personal. For the record, I am not trying to convince you to get the N3Ultra. On the contrary, I always steer customers away if the product doesn't...

We have to determine whether the problem is related to a particular WiFi Setup or a general problem that disabled that WiFi connectivity completely. To debug the case, try to connect your N8ii from other WiFi services, is it possible to try connecting to the free WiFi service from public...

Firstly, you can roll back firmware to the previous version, so if you don't like a particular version of firmware for whatever reason, you can roll back to the previous firmware. We had a very lengthy debate regarding whether firmware will change the sound signature of the N30LE. We have...

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...