FiiO’s Upgraded Bluetooth Amplifier BTR1K: Qualcomm QCC 3005 BT chip, BT 5.0 and aptX /aptX LL/AAC supported, RGB light, NFC pairing, Type C and USB DAC
Jan 19, 2018 at 12:38 PM Post #286 of 803
[QUOTE = "waynes world, post: 13986104, membro: 333894"] Non sento affatto alcun "rumore di tono alto statico". Forse le mie orecchie non sono abbastanza buone. O forse i tuoi sono troppo buoni lol. O forse ha a che fare con quello con cui ti stai affiancando (sto affiancando Samsung S7) (modifica: ora vedo che hai provato con vari dispositivi). O forse hai effettivamente un'unità difettosa.



Sento un segnale acustico acuto dopo l'accensione. E penso anche quando la batteria si sta scaricando. Non sono sicuro se questo è ciò a cui ti riferisci, ma non penso che sia ciò a cui si riferisce grininja. [/ QUOTE]
+1
 
Jan 19, 2018 at 12:57 PM Post #287 of 803
I don't hear any "static high pitch noise" at all. Maybe my ears aren't good enough. Or maybe yours are too good lol. Or maybe it has to do with what you are pairing up with (I am pairing up with Samsung S7) (edit: I now see that you tried with various devices). Or maybe you do indeed have a faulty unit.



I do hear a high pitch beep after powering on. And also I think when the battery is getting low. I'm not sure if that is what you are referring to, but I don't think it's what grininja is referring to.

Its not the low battery signal. It happens when i paused songs or re-activate my bluetooth with it connected. There will be those kind of high frequency static sound emitting out for few seconds.. kinda like a mild version of frequency you will hear when you are on phone and there are incoming sms.. not exactly same sound pattern but similer kind of static sound. Hah its hard to describe.. or maybe i'm just real sensitive to high frequency.
 
Jan 20, 2018 at 2:16 AM Post #289 of 803
It's not about when you pause your devices, it matters when you listen your music. Just make this test: put a blank track (this youtube link, for example). Then up your volume above 50%. If you hear it than the high pitch noise is also present in all you listen, it's just covered by the rest of the sounds.
 
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Jan 20, 2018 at 8:28 AM Post #293 of 803
It's not about when you pause your devices, it matters when you listen your music. Just make this test: put a blank track (this youtube link, for example). Then up your volume above 50%. If you hear it than the high pitch noise is also present in all you listen, it's just covered by the rest of the sounds.

Tried this with my BTR1 and a FiiO F3, can't hear any static. And no high pitch noise. It's just silence.
 
Jan 20, 2018 at 12:29 PM Post #295 of 803
It's not about when you pause your devices, it matters when you listen your music. Just make this test: put a blank track (this youtube link, for example). Then up your volume above 50%. If you hear it than the high pitch noise is also present in all you listen, it's just covered by the rest of the sounds.

Tried this with my BTR1 and a FiiO F3, can't hear any static. And no high pitch noise. It's just silence.

Same here - complete silence. That was in a completely quiet environment, and with phone and btr1 volume both set to maximum.

My ears probably don't pick up anything about 13K, so if there is a really high pitch noise and it is above that, I won't be hearing it.
 
Jan 21, 2018 at 8:45 AM Post #296 of 803
something i didnt get exactly.

FiiO clearly cant advertise AAC becuase its not licenced but the chipset supports it, and on page 8 (i think) there was this rom tool that can reenable AAC but i´ve only seen one post and unclear if it actually works.
 
Jan 21, 2018 at 11:19 AM Post #297 of 803
This wss Fiio's reply iv about page 15:

Due to our mistakes on product description writing and inspecting, the AAC was falsely listed as a supported Bluetooth codec of the BTR1. After confirming with our QC department, it's concluded that as our application for using the AAC codec has not been finally approved, the AAC codec was disabled on the BTR1 during mass production.

So, no AAC functionality.

I'm still waiting for my delivery...
 
Jan 24, 2018 at 5:34 AM Post #299 of 803
So I received the BTR1 yesterday...
Skipping the good points I want to address an issue: when volume goes one step after the middle point there is a static high pitch noise. Subtle but audible. As volume goes up so is the annoying noise.

At first I heard it when paused the music and after a second disappeared. I thought that was because of some kind of an idle state that start after pausing the music and unfortunately I was right. I played an empty track and the noise it's audible as long the digital data (music) is transmitting.

I checked with 2 devices (Sony XC phone and iPad Mini 4) and worth 3 pairs of headphones (Momentum In-Ear, Fiio F9 and Beyerdynamic DT990 PRO). When testing the charging cable was not connected and also I tried to move away from electronics in the room.

So is this a faulty device?
Dear friend,

Sorry if the late reply.

When pausing the music, you would get the static noise right?

According to the feedback from our engineer, it is because of the Bluetooth chip CSRA64215.

We have also reported to Qualcomm (CSR was bought by Qualcomm now). They think that this issue would not affect a lot and doesn't last for a long time.

Currenly, they haven't provide a solution for this as well. :frowning2:

Sorry if bringing inconvenience to you.

Best regards
 
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Jan 24, 2018 at 5:40 AM Post #300 of 803
Yes, thanks for the correction. But isn't the design opposite of what people would generally expect. + is next and - is previous? just asking!
Dear friend,

We consider the postion for designing volume + (upper one) for pre, volume -(lower one) for next. The design may meet most users but not all. We would also report your feedback to our engineer and consider modifying in later product.

Best regards
 
FiiO Stay updated on FiiO at their sponsor profile on Head-Fi.
 
https://www.facebook.com/FiiOAUDIO https://twitter.com/FiiO_official https://www.instagram.com/fiioofficial/ https://www.fiio.com support@fiio.com

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