I haven't tried other coaxial cables yet because I don't have any suitable ones for Fiio to Ibasso. I don't know whether these cables are shielded. I just see that Moon Audio is doing 40 hours of burn in. https://www.moon-audio.com/black-dragon-mini-coax-digital-cable-75ohm.html

Yesterday my custom Black Dragon Mini coaxial cables from Moon Audio arrived. 3.5mm 4 pin to 2 pin and RCA to 3.5mm 2 pin. Now I can connect my Fiio M17 and M15s to the D16 coaxially. To my ears the sound is worse than via USB from the iPhone or iPad Pro. Maybe the cables have to burn first or...

@FiiO I want to use the 3.5mm coaxial output and need information about the 3.5mm plug. Is it 4-pin? What is the pin assignment? How is it different from the 3-pin ibasso plug?

Hello, I've asked the question before but haven't received an answer. I want my Fiio M15s over 3.5 coax. Connect output to D16. Fiio has a 4 pin coax. Exit. Does anyone know the pin assignment of Fiio and ibasso? Where can you have a cable like this manufactured, preferably in Europe?

Is it possible to connect the 3.5mm coaxial output of a Fiio M15s to the coaxial input of the D16? Are there 4-pin to 2-pin adapters? Thank you

@FiiO Hello, I'm also having problems with the USB output on my M15 (same on the M17). When paired with my mobile DAC (ifi micro idsd BL) everything works with the fiio app and the output volume is fixed and I control the volume on the DAC. When using a streaming app (Qobuz, Radio paradise) I...

@FiiO Can I activate the desktop mode if I connect a 12V DC power supply via the usb c connection with an adapter like the M17? Maybe I can get rid of the hum that way.

When I plug my M15s into a fast charger to activate desktop mode, I hear a faint hum with my IEMs when no music is playing. When I touch the DAP or the 4.4 connector the hum stops. Surely it's a grounding problem. I've tried different sockets, but always the same buzzing. The intensity varies at...

Same for me. I connect the M15s to the ifi micro idsd bl via USB and get this window when using the fiio app. The output is fixed and the volume is controlled on the ifi DAC, so all OK. This window does not appear with Qobuz, Radio Paradise and Radio player App and I have to set the volume to...

OK thanks. I was able to rotate it with a little wobbling.

I know how it's supposed to work, but I can't screw anything. The screw connection is tight.

I bought my FD7 6 months ago and I am very satisfied with it in relation to the price. Today I wanted to switch from 4.4 to 3.5mm and I can't get it cranked up. I tried it following the instructions, just like 6 months ago. Can someone help me and knows a trick? Thanks very much

It's just weird that the problem only exists in battery mode. Everything works in desktop mode.

You're right. I had it in desktop mode and it worked multiple times. In battery mode with the screen off, I have to press the play button several times, like you. With screen on it seems to work. I hope a software update can fix it. I remember on another DAP (RS8?) people had the same problem...

Hello, I just tried the same thing. For me, the hardware play/stop buttons work whether I wait 30 seconds or 2 minutes. I also play music from Micro SD via Fiio app.

I'm bad at describing something like that. Maybe the sound signature of the M15s suits me better, at least with IEM. It is a bit softer and not as aggressive and sharp as the M17 with IEM..

I The heat generation has not been high so far. An hour in leather case, desktop mode, medium gain with Meze Empyrean and Focal Elegia and M15s was only slightly warm.

Hello, Received my M15s and am positively impressed. Commissioning, software update, loading the Qobuz app and loading a 1TB Sandisk micro SD went quickly and without any problems. First impressions with Fiio FD7, Sennheiser Ie900 and Meze Empyrean were very good and at the moment it sounds...

How can a 1.5 year old device be an "aging battery"? If M17 doesn't completely bypass the battery in DC mode, then it's all a marketing gimmick by fiio.

Does the heat development also depend on whether battery power or power via USB PD connection is used? If I bypass the battery, use USB PD as power supply and only use low gain for example, does the M15s still get warm and have to use the fan?

Hello. Are there still problems with 1tb Micro SD ( Sandisk Extreme Pro 1tb) with the current software? Some users complained that the maps were not read or read incorrectly and the start was very slow. Are these bugs fixed? I can't decide right now who will be my new DAP. At over 4000 euros I...

@Micha111 When the M15S is connected to USB power, the battery is bypassed, similar to DC mode on the M17. Are all gain stages still available under USB power supply or only ultra high gain? How is the heat development under USB power supply. Is it getting much warmer? M11S users often complain...

@FiiO Can you confirm if a screen protector is pre-installed or not. It would be an odd austerity measure if there wasn't one.

That's good data. So the M15S would be a mobile complement to the M17.

The M15S comes with a cooling stand. Does it have the same heat problem as the M17? My M17 gets pretty warm after 60 minutes without a fan, even with IEM, low gain, WIFI off, screen off. That's why I only use it with the fan in the stand so that there is no heat problem.