[sofastreamer]

anyone elses BTR15 keeping to make a loud buzzing noise and reboots at least once every 15 minutes? I already got some very uncomfortable ear ringing because of that. also the app doesnt seem to always store the settings in the audio register, so i have to readjust it couple of times over the day. if there isnt an update in the upcoming days, that prevents it from the loud buzzing and rebooting behavior i will have to send it back to the seller.

 

[eloelo]

anyone elses BTR15 keeping to make a loud buzzing noise and reboots at least once every 15 minutes? I already ot some very uncomfortable ear ringing because of that. also the app doesnt seem to always store the settings in the audio register, so i have to readjust it couple of times over the day. if there isnt an update in the upcoming days, that prevents it from the loud buzzing and rebooting behavior i will have to send it back to the seller.

likely not normal. Didnt notice any auto restart, but I get loud white noise when switching sample rate on android (but most people wont fumble with sample rate setting anyway).

 

[sofastreamer]

likely not normal. Didnt notice any auto restart, but I get loud white noise when switching sample rate on android (but most people wont fumble with sample rate setting anyway).

interesting, mabe i got a potatoe. i reseted everything, but the unfortunately the regular reboots with the annoying buzz isnt gone. maybe i will list all the problems the device causes me in the upcoming days. atm i have no desire to further think about it. listening to the topping g5 rn and feel like in heaven compared to the last 2 days.

 

[amery]

interesting, mabe i got a potatoe. i reseted everything, but the unfortunately the regular reboots with the annoying buzz isnt gone. maybe i will list all the problems the device causes me in the upcoming days. atm i have no desire to further think about it. listening to the topping g5 rn and feel like in heaven compared to the last 2 days.

You clearly received a defective unit, mine has never rebooted itself

 

[sofastreamer]

likely not normal. Didnt notice any auto restart, but I get loud white noise when switching sample rate on android (but most people wont fumble with sample rate setting anyway).

i found out that the problem is already existing for quite a while and there is a thread about that on official Fiio forums: https://forum.fiio.com/note/showNoteContent.do?id=202311240539058669670&tid=4

 

[sofastreamer]

You clearly received a defective unit, mine has never rebooted itself

see my post above that links to that problem on Fiio forums

 

[FiiO]

see my post above that links to that problem on Fiio forums

Dear friend,

Hi,
1. What's the firmware version of your BTR15? If it is not the latest version, please update first.
2. Which device are you connecting the BTR15 to? And which input mode are you using?
3. Does the problem happen when connecting the BTR15 to other device?
We will try to check whether we could reproduce the same problem first.

Best regards

 

[FiiO]

Hi, my settings are on bluetooth mode, low gain, hybrid filter, dual dac deactivated, no equalizer, 3.5 output and aptx adaptive codec by default when paired with the phone under Android OS.
The bluetooth codecs selected on fiio control app are aptx adaptive & AAC.
Thanks & Greetings

The problem only occur when the BTR15 is turned off for long periods of time (6-8h) for me it only happen when I close the computer for the night and restart it the day after. The BTR15 will show the L that indicate that the low gain profile is active, but it will work instead in high gain. Switching from low gain to high gain will result in no change, cause the BTR15 was effectively working on high gain, at this point switching from high gain to low gain will solve the problem and the device will finally set (this time for real) to low gain.

I use the BTR15 in PC mode, EQ off, 2.0 input, Charge protection On, and I installed both the latest firmware updates correctly.

I also think the "time factor" (the fact that the problem present itself only if the BTR15 is turned off for long period of time) could be the key factor in solving the problem. Cause like I said previously, turning off and restarting the BTR15 immediately or after little amount of time has passed, does not seem to cause the gain mismatch problem.

Also, if for you (users) the problem present itself in the same way as I described above, please like this post so that we can get a rough esteem of how many of us (on this forum at least) have the same problem.

Dear friends,

Thanks for the kind feedback. Let me try to test again following the provided information first.

Best regards

 

[sofastreamer]

Dear friend,

Hi,
1. What's the firmware version of your BTR15? If it is not the latest version, please update first.
2. Which device are you connecting the BTR15 to? And which input mode are you using?
3. Does the problem happen when connecting the BTR15 to other device?
We will try to check whether we could reproduce the same problem first.

Best regards

Hi Fiio,
thank you for your reply!

I am on the latest Firmware with both, the BTR15 (3.5) and the BTR30pro i mostly use as transmitter, but i also use my Samsung S20FE and it happens with both devices.
I thought the problem might be having the BTR15 connected to both at the same time, so I tried it with only using one of them and it still happens.

I use the BTR15 in Low Gain without EQ, tried it with and without dual dacs (same problem) and i tried it with LDAC and APTX HD as well. I also tried it with the 3.5mm and with the 4.4mm jack.
After reboot it only reconnects in 50% of the time with the BTR30pro, the other 50% i have to pair them again. If it reconnects tho, it randomly looses the volume setting and blows my ears with volume at 25 instead of 11.
The problem already has been reported by a couple of people on your own forums: https://forum.fiio.com/note/showNoteContent.do?id=202311240539058669670&tid=4

 

[Listenerd]

Hi @FiiO ,
I acquired the BTR15 a month ago and I'm having issues with the latest firmware 3.5 update. I see that you guys finally added shelf filters!
When I try setting a specific bandwidth to Low/High shelf filter, it does not save the filter properly. They always revert to the peak filter. I'm using an iPhone 13 pro on the latest iOS update.

I did try resetting the BTR15 and deleted and re-install the iOS app.

 

[sofastreamer]

Hi Fiio,
thank you for your reply!

I am on the latest Firmware with both, the BTR15 (3.5) and the BTR30pro i mostly use as transmitter, but i also use my Samsung S20FE and it happens with both devices.
I thought the problem might be having the BTR15 connected to both at the same time, so I tried it with only using one of them and it still happens.

I use the BTR15 in Low Gain without EQ, tried it with and without dual dacs (same problem) and i tried it with LDAC and APTX HD as well. I also tried it with the 3.5mm and with the 4.4mm jack.
After reboot it only reconnects in 50% of the time with the BTR30pro, the other 50% i have to pair them again. If it reconnects tho, it randomly looses the volume setting and blows my ears with volume at 25 instead of 11.
The problem already has been reported by a couple of people on your own forums: https://forum.fiio.com/note/showNoteContent.do?id=202311240539058669670&tid=4alre

yesterday i did the updates of the BTR15 and the BTA30pro for both including the xmos updates again. This time the BTR15 not via OTA but both with the downloaded files connected to my pc. Listening 5 hours today and had only one reboot so far. dont know if its random tho

 

[Klangforscher]

I updated on the newest firmware 4 days ago and to actual xmos 3 days ago. No reboots with the new versions, even no reboots with the older version of the firmware / xmos. The only problem is the gain level that needs to be set everytime after a boot. If I set it to "L", it doesn't save that setting. But it shows "L" in the status bar, but it's always set to high after a new start.

And think about the people wearing googles. The "L" and "H" in the status bar is not good readble. Maybe you can change the thickness of the characters to 2px?

Made only OTA updates.

 

[AudioBomb]

FiiO BTR15 from a Music Producer's perspective

Just got my FiiO BTR15 and call me impressed! How can a 120€ DAC sound almost as good as a 500€ one? As a comparison I have an Antelope Audio Zen Go Sinergy Core Audio interface that sounds as good as 1000€+ DACs. Antelope is industry leading in the sound quality department, along with RME, Universal Audio, among a few others.

BTR15 Balanced (with Dual DAC ON), sounds like anything I've heard below 500€. Soundstage width is very wide, depth is amazing, imaging is not quite "holographic", but engaging, instrument separation is good and detail retrieval is excellent, with refined and airy highs and silky smooth, transparent/clean and romantic vocals. Harmonics, delays and reverbs stand out for a magnificent listening experience.

Antelope Audio Zen Go in comparison sounds a bit more spacious, with a wider soundstage and a bit better definition in the mid and high frequencies. Imaging is a bit more 3D, separation is about the same, and bass is more neutral, less pronounced than FiiO, but still with a great punch. What impressed me the most is that it was not easy to notice these differences from an Audio Interface that sounds like heaven and has a sonic accuracy just found in very expensive DACs.

A reminder that if you use 3.5mm the second DAC will be disabled and with Dual DAC ON on 4.4mm it sounds 50% better than OFF.

I would be perfectly able to use BTR15 as a portable audio interface on the go, even for final mixing and mastering decisions. It is that capable.

Just to finalize, I had Chord Mojo, and while accuracy is excellent, soundstage is below average, it told me nothing, so I sold it next week. Not saying that FiiO BTR15 is better, but the experience is much more immersive and vibrant for me. And that's what music is all about. Having fun.

Have a great day everyone!

EDIT: oh, I've tried FiiO BTR5 before BTR15 and the latest sounds 75% better to my ears. Arrivederci

 

[OceanOfLight]

Nice to know that the BTR15 stand its ground against devices that cost 4-5 times its price!

By the way, have you tried setting the filter of the BTR15 on Fast instead of Hybrid? I found out that the difference is noticeable for my ears in many cases.

In my experience when the BTR15 set on Fast it loses a bit of soundstage and "airiness" and, overall, a bit of its "smoothness", in favor of added dynamics and resolution. The fact that this possibility is offered gives the device even more versatility in my opinion! (or maybe I just imagine things, in the audio world you could never know).

 

[FiiO]

Hi @FiiO ,
I acquired the BTR15 a month ago and I'm having issues with the latest firmware 3.5 update. I see that you guys finally added shelf filters!
When I try setting a specific bandwidth to Low/High shelf filter, it does not save the filter properly. They always revert to the peak filter. I'm using an iPhone 13 pro on the latest iOS update.

I did try resetting the BTR15 and deleted and re-install the iOS app.

Dear friend,

We have reported to the APP engineer for checking about that. They will try to fix the problem soon.

Best regards