[FiiO]

Thanks for the response!

1. Yep, newest Android and the latest Firmware installed.
To describe a little bit more precise: USER1 Profile is configured (some freq modifications and -xdB in Pre-Amp) and works perfectly. I can switch between EQ Profiles, disable EQ, just as expected. Now, when I change to the USER2 Profile and start modifying it with -xdB Pre-Amp plus some Adjustments everything looks fine. But when I change the Profile from USER2 to USER1 and then back to USER2 everything is gone except for the Pre-Gain. (USER1 is not touched and not reset)

2. Yeah, but NOT for PC or Phone

Dear friend,

1. Please try to use the FiiO Control app 3.17 for help instead.
2. Do you mean the EQ fails to work for your PC or Phone in UAC 2.0mode?

Best regards

 

[campermate]

2. Do you mean the EQ fails to work for your PC or Phone in UAC 2.0mode?

Fails quite reliably, in fact. Tested with two PCs and Pixel 8 Pro. Changing to UAC2.0 makes a "FIIO BTR15 EQ DevKit" out of my device. As soon as ANY EQ is selected with UAC2.0 the device reconnects and there is no audio-output. Back to "OFF" Sound is playing.
Sorry guys, your firmware/software is a great example for a perpetual beta.

 

[Saturno]

Caro amigo,

Existe alguma operação específica para reproduzir o problema? E você pôde ouvir que o volume está mais alto? Agradeço antecipadamente!

Atenciosamente

For me it happens every time I turn on the device and connect the cable to output 4.4. The perception is that the volume is much higher, so I have to go to the gain options and change it to high and low again

 

[OceanOfLight]

For me it happens every time I turn on the device and connect the cable to output 4.4. The perception is that the volume is much higher, so I have to go to the gain options and change it to high and low again

I confirm that it happens on 4.4 and 3.5 both. In my case it seems to always happen when I turn off the computer for the night (my BTR15 is connected to it with and USB-C and the profile I use is "PC"). When I start the computer the next day the problem recurs almost every time, and I need to switch from Low Gain to High Gain to Low Gain on the BTR15 to solve it. Closing the device manually and trying to recreate the bug immediately doesn't seem to work, cause the gain mode stays on Low Gain as it should.

Plus, I can assure this is not placebo, because I created a list with the "correct" volume for all the IEMs that I use (with separate entries for 3.5 and 4.4 [all volumes based on the Low Gain profile]. Today the volume was too loud (despite being at the lowest value of the "correct" volume I choose for the IEM [TRN Conch, Volume 16-20]), so I switched from Low Gain to High Gain to Low Gain from the BTR15 settings, and the volume was "correct" again. Therefore, I think it's a real issue.

For reference, the settings of my BTR15 are as it follows:
CHG PR: ON
GAIN: L
FILTER: HYBRID
EQ: OFF
CARMODE: OFF
U-AUDIO: 2.0
VER: 2.2
DUAL DAC MODE: ON (on the app)

 

[FiiO]

Fails quite reliably, in fact. Tested with two PCs and Pixel 8 Pro. Changing to UAC2.0 makes a "FIIO BTR15 EQ DevKit" out of my device. As soon as ANY EQ is selected with UAC2.0 the device reconnects and there is no audio-output. Back to "OFF" Sound is playing.
Sorry guys, your firmware/software is a great example for a perpetual beta.

Dear friend,
1. I failed to reproduce the issue you said, and i told a small video for you:
2. Or are you playing MQA files instead? The EQ is not supported when playing MQA.

Best regards

 

[FiiO]

I confirm that it happens on 4.4 and 3.5 both. In my case it seems to always happen when I turn off the computer for the night (my BTR15 is connected to it with and USB-C and the profile I use is "PC"). When I start the computer the next day the problem recurs almost every time, and I need to switch to High Gain to Low Gain on the BTR15 to solve it. Closing the device manually and trying to recreate the bug immediately doesn't seem to work, cause the gain mode stays on Low Gain as it should.

Plus, I can assure this is not placebo, because I created a list with the "correct" volume for all the IEMs that I use (with separate entries for 3.5 and 4.4 [all volumes based on the Low Gain profile]. Today the volume was too loud (despite being at the lowest value of the "correct" volume I choose for the IEM [TRN Conch, Volume 16-20]), so I switched to High Gain to Low Gain from the BTR15 settings, and the volume was "correct" again. Therefore, I think it's a real issue.

For reference, the settings of my BTR15 are as it follows:
CHG PR: ON
GAIN: L
FILTER: HYBRID
EQ: OFF
CARMODE: OFF
U-AUDIO: 2.0
VER: 2.2
DUAL DAC MODE: ON (on the app)

Dear friend,

Thanks for the details, we will try to test first. Sorry for the inconvenience.

Best regards

 

[quadge]

I confirm that it happens on 4.4 and 3.5 both. In my case it seems to always happen when I turn off the computer for the night (my BTR15 is connected to it with and USB-C and the profile I use is "PC"). When I start the computer the next day the problem recurs almost every time, and I need to switch to High Gain to Low Gain on the BTR15 to solve it. Closing the device manually and trying to recreate the bug immediately doesn't seem to work, cause the gain mode stays on Low Gain as it should.

Plus, I can assure this is not placebo, because I created a list with the "correct" volume for all the IEMs that I use (with separate entries for 3.5 and 4.4 [all volumes based on the Low Gain profile]. Today the volume was too loud (despite being at the lowest value of the "correct" volume I choose for the IEM [TRN Conch, Volume 16-20]), so I switched to High Gain to Low Gain from the BTR15 settings, and the volume was "correct" again. Therefore, I think it's a real issue.

For reference, the settings of my BTR15 are as it follows:
CHG PR: ON
GAIN: L
FILTER: HYBRID
EQ: OFF
CARMODE: OFF
U-AUDIO: 2.0
VER: 2.2
DUAL DAC MODE: ON (on the app)

I think I have the same issue, using 3.5mm jack and exactly the same settings. If I leave it untouched for a while, the device displays L and is noticeably louder. When I switch from L to H there is no volume difference, and when I then switch from H to L the volume then gets lower.

 

[Serge Bernamej]

@FiiO you responded to everybody except me so i’ll ask again. Yes or no will you add crossfeed to the fonctionalities ?
Qudelix has this.

 

[funnyjoke]

Guys, I just found a solution to the bad BT range on the BTR15. I am 90% sure now that it was purely battery-related and was being caused because of low battery. I tried it with a full charge and I'm getting good frequencies moving about now, yay. Just letting everyone that is having this issue know.

Coming back to this after a while, and from off-and-on testing of the BTR15, I have to say this was false; the BTR15 in-fact does have range issues with Bluetooth even on full charge. What can I do about this?

@FiiO you responded to everybody except me so i’ll ask again. Yes or no will you add crossfeed to the fonctionalities ?
Qudelix has this.

Wdym by crossfeed to the fonctionalities?

 

[campermate]

1. Please try to use the FiiO Control app 3.17 for help instead.

Cool, downgrade to 3.17 solved the EQ not stored issue. Hope that branch will make it to production again.

2. Or are you playing MQA files instead? The EQ is not supported when playing MQA.

Nope, on my Windows machines there is no audio output with enabled EQ and U-Mode 2.0 at all. Not in Youtube, no system sounds, no music with Tadal. I will continue to monitor this and carry out further tests.

 

[kelp]

Unfortunately I'm finding the BTR15 so buggy that it's hardly usable.

Using it in Phone mode connected via USB-C to my iPhone 15 Pro. Playing music from Apple Music.

If I don't try to do EQ, it's fine. But once I start doing EQ, the problems start.

I used the FiiO Control app to setup EQ for 3 different sets of IEMs. That was a bit unintuitive, but I figured it out.

Here are the major issues:

1. When I change an EQ pre-set in the FiiO Control app it sometimes works, but more often than not, I get one of the following issues:
   1. Audio stops completely, and fixing it seems non-deterministic. Sometimes unplugging works, sometimes I have to power cycle the device, sometimes I have to power-cycle the device and my iPhone. I now think this was just super quiet and I had to crank the volume on the iPhone to hear it.
   2. The audio works but it's really quiet. When things are working normally I can't change volume on my iPhone, so I need to use the volume buttons on the BRT15. When it gets into this failure mode the iPhone volume works gain, but I have to max it out, and turn up the BRT15 volume a fair amount. EDIT I figured out from an Amazon review that if you turn EQ off on the BRT15 it fixes this.
2. If I switch EQ pre-set on the device while the BTR15 is plugged into my phone and the FiiO Control app is open it crashes the FiiO Control app

And one less major issue

1. You can't change EQ settings while music is playing. It stops the music, and sometimes triggers issue 1 2 above. It would be much easier to A/B test EQ settings if I could change them while music is playing...

Overall, I like the industrial design of the device, but the App and the firmware seems to need a lot of work. I hope these are known issues with fixes incoming, or probably won't be holding onto this thing.

EDIT: I'd really love to see this thing fixed, so here is how I can replicate the issue 100% of the time.

1. Switch to Phone mode or PC mode.
2. Plug BTR15 USB-C cable into into iPhone 15 Pro
3. Turn on BTR15
4. Open Apple Music, tap the headphone icon at the bottom of Apple Music and see the BTR15 device shows up as FIIO BTR15
5. On the BTR15 device go to EQ and chose any EQ setting, if you're playing music, it stops it.
6. Volume is now super quiet, and now can be controlled on both the iPhone and BTR15. Tap the headphone icon at the bottom of Apple Music and the device shows as FIIO BTR15 EQ DevKit
7. On the BTR15 device turn off EQ, volume is now normal again, and the device shows up at FIIO BTR15 again. No DevKit.

If instead I do step 5 by choosing any EQ in the FiiO Control app, I get the same result.

Now if I unplug the BRT15 and switch to Bluetooth mode, I can do all the above, and it works just fine. I can switch EQ pre-sets, or even tweak values live, it doesn't stop the music, doesn't switch to EQ DevKit mode. It all works as expected.

My only big complaint is it would be nice if you could edit Gain in FiiO Control by typing a number, I could only figure out how to do that with the slider and it's incredibly hard to get it to land on a precise number. I don't seem to be able to long press on to get to advanced settings like I can with the EQ bands.

So that's all a long way of saying it seems like there is some bug/bugs in USB-C modes only. Bluetooth mode basically works as expected. But I can't get it to work right with EQ when connected via USB-C.

 

[FiiO]

@FiiO you responded to everybody except me so i’ll ask again. Yes or no will you add crossfeed to the fonctionalities ?
Qudelix has this.

Dear friend,

We have recorded your feedback. The engineer and product manager will assess about that first.

Best regards

 

[Serge Bernamej]

Dear friend,

We have recorded your feedback. The engineer and product manager will assess about that first.

Best regards

Also I garanty you nobody uses the uselss EQ presets on the Fiio control, can you please allow the presets to be custumized already??!!! only 3 custom is stupid.

 

[FiiO]

Also I garanty you nobody uses the uselss EQ presets on the Fiio control, can you please allow the presets to be custumized already??!!! only 3 custom is stupid.

Dear friend,

Hi, other users need the presets EQ still. We will assess about adding more custom EQ in the BTR15.

Best regards

 

[happymonk92]

Hi, for anyone who use FiiO BTR15, I see that there is Dual DAC Mode option in FiiO Control app. I'm connecting this BTR15 via lightning cable to USB C to my iPhone and can play music normally. But, in the FiiO Control app, I can't find this Dual DAC Mode. Any suggestion? Or this feature is limited to the Android app?