FiiO RC-BT Bluetooth Cable with MMCX Connectors
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CalvinW

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@FiiO
Guys when I'm in different room than my smartphone it constantly stutters and breaks signal, my Bluetooth headphones works perfectly fine in the same conditions
This cable is faulty, you have to work on it and improve, otherwise it make no sense to sell it, because you annoy and upset people instead satisfy them
I bought two versions straight and over-the-ears, I expect from you to replace these with the new improved and fixed versions.... THANK YOU!
they don't care at all. Even if they reply, they are just going to give you a half-assed response
 
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greenkiwi

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I've noticed an issue with the pair I have, second batch of curved that have better iOS support.

The battery level reports, but it effectively reports at 90% until suddenly the headphones beep and it says 10%, followed by shutting off.

I can't understand why the battery level doesn't have a normal degradation pattern.
 
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takeitblue

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they don't care at all. Even if they reply, they are just going to give you a half-assed response
However I must admit to be honest, that it works perfectly fine if the smartphone is in my pocket (even outdoors, while commuting)
 
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Coop

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Recently found my Fiio RC-BT in a case stuffed in the back of my nightstand. As since I last used them, I've upgraded a few possible source devices. And with weather warming up & working from home due to the whole covid thing, a set of decent sounding wireless inears for calls & music would be a good thing.

To put this in perspective, I have some other BT stuff, nothing fancy, just in the "good enough for this kind of use"-category. I mostly use a set of Sennheiser HD 4.40 BT headphones for this kind of thing. They are good because they can connect to multiple devices at once, so I can have them connected to my PC and phone at the same time and sound ok, they just get sweaty and nasty real quick when the temperature outside goes over 20C. I also have the Hifiman TWS600 and Samsung Galaxy Buds. Both ok comfort wise (slight edge for the TWS600), sound wise (slight edge for the buds), and for calls the buds are the clear winner of the 2, but neither is as good as the HD 4.40. For all of them goes that the connection is rock solid. I can walk into another room 7m away from my source, a room full of sources of interference to be exact, close the door and everything is fine (occasional hiccup at most, usually nothing).

And then there was the Fiio RC-BT... I got these as a Christmas present a few years back. And back then, they were a pain in the ass. But, since then devices were upgraded, so I decided to charge them up and give them another go.
I hooked the RC-BT up to my Fiio F9, as that was the closest set of MMCX IEMs I had available. Put the RC-BT in pairing mode and told my work laptop (Dell Latitude 5590, 8th gen i7, 16GB running W10) to pair with the RC-BT. No issues there.

Once connected, I fired up Spotify (company policy isn't very clear on local storage of music). Selected an album (Jean Michel Jarre - Electronica Pt. 2), adjusted the volume and thought "This doesn't sound bad at a..." and then the music started cutting out. Exactly as I remembered from my previous experience with the RC-BT. It actually seemed even worse than before. In the past, I stopped using the RC-BT because of the frequent cut outs. But when I had my source on my nightstand and didn't move while in bed, it was somewhat usable. Not so much if I put my source in my pocket and moved about. But now, with my laptop not even 60cm from the antenna of the RC-BT and nothing in the signal path, there was almost as much cut out as there was music. Even turning off all sources of radio signals didn't make a difference. It was horrible. The sound was pretty good, but if you can't even listen for 10 seconds without a cut out, what use is it? I tried a few other sources (AK70, M6, Galaxy S10) and a couple of other IEMs (Rose Mini Mk2, Tennmak Pro) but the results were similar.

I just can't wrap my head around how incredibly bad the connection is. Even a low budget bluetooth earpiece given away for free by my operator does better. All my other bluetooth devices outperform the RC-BT when it comes to connection stability.

The RC-BT is completely unusable and is by far the worst Fiio product I have ever owned (and I've owned a few: E3, E5, E6, E7, E9, E12, A1 speaker amp, HS2, X3, F9, M6, a whole bunch of cables and this RC-BT, so close to approaching fanboi levels). The only thing usable about the RC-BT is the little pouch that came with it. This product is simply not worthy of the Fiio name and it's a good thing it was discontinued.
 
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DreaMworX

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are you planning on bringing this back maybe with Bluetooth 5 and a better audio chip? I like this solution better than the bulky UTWS1 or LC-BT2 but i couldnt find it on your website anymore
 
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FiiO

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are you planning on bringing this back maybe with Bluetooth 5 and a better audio chip? I like this solution better than the bulky UTWS1 or LC-BT2 but i couldnt find it on your website anymore
Dear user,

Thanks for your feedback. We will report your feedback to the product manger for reference.

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
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