FiiO BTR3 HiFi Bluetooth Receiver with apt/apt XHD/apt XLL/LDAC/AAC Support (Black)

Lets take a short n sweet review. Guys when you review the audio product, mention the source of the product (sadly nobody does) Im using Lg v30 mobile phone (hope u guys aware abt that).Come to the product Fiio BTR3 using with Lg v30. No words, awowsome, In deep bass and excellent sound output. The earphones Im using is Sony Mdr-nc31em which is came along with sony bt device (5yrs back :),Pros: Excellent sound stage, dont worry just go and buy if your source supports, aptX, aptX HD, LDAC, whatever. Voice call quality is ok, anyway i bougt it for MUSICCons: If u clip in shirt or T-shirt and if u wanna skip the song u need to hold the button for 2 seconds, its awfull while u ride on bike. While sony bt has only one click to skip the song. 2. The answering button is way to small.

This nullified all the complaints i had with the sound quality of almost any mobile i came accross. It works well with laptops and computers as well. Usefull when u want to play songs on ur non Bluetooth speakers and don't really want to let go of your phone.The quality and amplification of sound is amazing. The phone app allows you to choose and configure a low pass filter of your choice, as well as set equalizer as per your preference. Even after disconnecting from the app this config will remain in the device itself.Best codec as per my experience is LADAC.

Really a high-end Bluetooth for your hi-fi music system or earphones/headphone.Fiio is my favourite since I bought FH1 IEMs. The best in class VFM in ear monitor. With them plugged into BTR3 it’s amazing that how even Your wired earphone/headphones sounds without losing quality.Bass is punchy and full of oomphs...highs are lil bit on higher side so you hear every frequency loud, crisp and clear.Really well balanced performance.Device is made of metal housing and glass top.I use BTR3 with iPhone so only AAC format is supported for music playback through Apple Music.But if you’re using high end android devices which can support LDAC/ aptxHD formats... it supports all kinds of formats and you can actually select specific audio codec to be played through FIIO music app for android and iOS. But make sure when you switch between OS iOS doesn’t support LADC / aptx codec so if you opted for that on android then only normal Bluetooth codec will work on iOS.Calling is okayish. Just one microphone is present and no noise cancelling. Other party always complains about loud background noises. If you’re travelling on bike, your voice isn’t audible to other party. It’s that pathetic when used outdoor. Indoor mic is good as there’s no background noise.Battery level indicator shows false information on IPhones. Device shows red logo and beep sound as battery gets low. But battery indicator on phone shows 30%.Good thing is tha really charges fast as described and lasts almost 2 days, music on full volume(device 100%, phone 80%) regular calling in between. Still a bang at this price.Also this DAC can be used via USB for high resolution audio out from your laptop or desktop. I personally haven’t tried this mode but it’s also supported.Given 1 star less just because it doesn’t support balanced out port. Those who knows what balanced port is, please google and do some homework before buying this one.

Good sound quality, helps me retain my favorite wired (3.5mm) IEMs and go wireless without any major sacrifices in sound quality. There are some compromises though, when using LDAC, there is a noticeable difference in terms of soundstage. The audio feels more "closed" or inside the head when compared to how it feels when wired.Though the FiiO music app has a "HWA" option that supports LHDC, I haven't been able to get a stable LHDC connection, probably due to compatibility issues or limitations with my Galaxy Note 8.

Make all audio output devices wireless with very high quality output..Total paisa vasoolu.. I don't feel like upgrading any of my head gear..Sounds awesome on my Panasonic HTX7, Sound Magic E50C, Sennhieser MX170, Sony MDR XB 550AP & Onkyo RT370 5.1, Car Audio.. Every thing you connect to this gets a new dimension.Give new life to all your old Earphones and Headphones.. Sounds just amazing.. Instead of spending on costly wireless headphones/earphones buy this.. Use cases are very versatile.. I also use this on my Onkyo 5.1 Home Theater online streaming music from Apple, Wynk, Prime sounds like Flac audio from my phone streaming over LDAC..

So I have what a audiophile would call a decent audio setup (Marantz Amp + Wharfdale towers) which needed bluetooth connectivity.The tiny fiio does the job, sounds musical even though the clarity is not as good as when using laptop+dac it is good enough to float my boat - considering the next options would cost at least 15k

Does what it says quite nicely. It's great for listening to music, with the expected compromises for wireless convenience. For calls though, the inline remote/mic on the headset gets disabled which makes it quite inconvenient. You have to operate volume control from the FIIO rather than from the inline remote, which feels very unnatural. Also, you will have to hang the FIIO somewhere near the mouth for the mic to pick up your voice. Even when you do that people complain of low volume. The Mi adapter doesn't have these issues, though it's audio quality is quite poor.

Battery life is similar to the Fiio Ubtr. One thing I like about this is it can connect to two devices simultaneously.I mostly use this function at work, I can make calls on both my laptop and phone. Without having to pair it each time.But I wish the 3.5mm output was on the other side of the device like it is in the case of Fiio Ubtr. It can be used while charging the device, which is great. I have tried using the BTr3 with Beyerdynamic dt 770 and Sennheiser HD 598.It didn't have any issues with powering the device, unlike the Fiio Ubtr.I also use this device while riding the bike. The microphone quality is good too. My device has occasionally got wet in the rain. I haven't faced any issues so far.

Bonjour,Je cherchais depuis quelque temps un mini DAC pour mon ipad pro 2018 11 pouces et je viens de le trouver ! :-)Après avoir essayé un petit adaptateur USB C à 8€ (mini DAC intégré dans une fiche USB C d'un côté et jack 3.5 de l'autre) qui m'a fortement déçu (distorsion épouvantable), je me suis lancé dans une recherche plus qualitative et j'ai sélectionné le Fiio BTR3.Il intègre un circuit bluetooth de qualité, Qualcomm CSR8675, qui permet entre autres l'usage du codec bluetooth AAC (celui utilisé par Apple) et un DAC de qualité (AK4376A).Le principe est le suivant : vous branchez votre casque filaire (ou vos écouteurs) sur la fiche jack 3.5 de ce petit gadget, vous vous connectez en bluetooth à votre ipad et le tour est joué ... ou presque, car il vous faudra au préalable mettre à jour son firmware (version 1.2 actuellement) pour en profiter pleinement en allant sur le site du fabricant FiiO (ordinateur sous Windows requis).Globalement, je suis très satisfait de ce produit qui offre un très bon son (aucun souffle, peut-être légèrement trop feutré avec un petit manque de spatialisation mais bon, on est dans le très bon ;-) avec la possibilité de régler le volume bas très finement car les réglages de l'ipad et du BTR3 sont indépendants. J’apprécie tout particulièrement ce point. Je suis très souvent gêné sur d’autres appareils par une échelle de réglage de volume trop brute (notamment entre le niveau 1 et 0) mais là, je suis au paradis.On peut aussi l’utiliser en mode USB C DAC mais curieusement, ça ne fonctionne pas avec le cable USB C / USB C livré avec l’ipad. Pour effectuer ce test, j’ai utilisé un cable USB C / USB A branché sur un petit adaptateur USB A (femelle) / USB C.Toujours est-il que je l'utilise principalement en bluetooth car je ne fais aucune différence au niveau du son avec le mode filaire et que c'est beaucoup plus pratique aussi de ne pas avoir de fil attaché à l'ipad lorsqu'on le tient en main ou pour se déplacer autour sans l’emporter tout en continuant à écouter la musique (aucun souci de réception dans un rayon de 10m).Pour ceux qui s'interrogeraient sur la latence dans le cadre d'un usage vidéo en bluetooth, j'utilise mycanal et la latence perçue est très faible à tel point que je pense que ça ne vaut vraiment pas le coup de se connecter en USB C pour gagner quelques ms (sachant que je suis plutôt exigeant habituellement sur ce point là ;-).A noter que même si le son est très bon, la puissance est relativement faible. Pour moi, c’est largement suffisant car j'ai un casque à faible impédance (24 ohms) et que j'aime les écoutes à volume modéré (ça protège les oreilles) mais si vous recherchez un produit puissant pour attaquer un casque d'une impédance bien supérieure dans un environnement bruyant, je pense que vous risquez de vous heurter aux limites de ce mini DAC.Je trouve que ce petit objet est assez cher mais il m'a fait oublier l'absence de mini jack 3.5 sur l'ipad pro 2018. Le son qu’il produit est supérieur à la connexion filaire de mon ancien ipad. J’imaginais auparavant que liaison bluetooth rimait avec son dégradé mais force est de constater que si on s’en donne les moyens (codec approprié, dac de qualité) on obtient un son de très bonne qualité.Il peut aussi servir de récepteur bluetooth pour la chaine HiFi bien que ce ne soit pas sa vocation première du fait de sa puissance limitée. Un micro est également présent sur la façade pour vos conversations téléphoniques ou pour appeler Siri. Je n’ai testé ni l’un, ni l’autre, il me sera donc difficile de faire un commentaire sur le micro.J’ai par contre testé l’application Fiio Music sur mon smartphone android (8.1) et sur l’ipad (elle a un format d’iphone). J’ai eu un peu de mal à accéder aux réglages du BTR3 sur l’appli iOS au début alors que ça m’a semblé plus facile sous android. Si vous souhaitez accéder au BTR3 avec Fiio Music sur l’ipad, je vous conseille d’arrêter toute lecture musicale ou vidéo en cours, puis d’aller dans le menu paramètres de cette application (symbolisé par la roue crantée) et de choisir l’avant dernière option « FiiO BT Control ». A partir de là un nouveau jumelage vous sera proposé, on vous demandera d’appuyer brièvement sur le bouton power du BTR3 et vous accéderez alors aux différents réglages en appuyant sur « cancel » (si si :-). Vous aurez accès par exemple à un égaliseur ou un réglage de filtre digital que je n’utilise pas pour ma part.Le voyant du BTR3 peut aussi être désactivé au travers de ces réglages mais il est assez discret et utile. Il permet notamment de s'assurer de la charge ou de la mise en marche, mais il indique aussi par sa couleur (bleu, cyan, violet, jaune, blanc, vert, etc.) le mode de communication utilisé.Il y a également quelques notifications sonores non désactivables au travers de l’appli que je trouve néanmoins très légères et pratiques. Elles indiquent la mise en marche/arrêt du BTR3, la connexion/déconnexion d’un périphérique, l’atteinte du volume max, etc.Voilà. J’espère que ce commentaire vous sera utile à défaut d’être concis ;-)

Zunächst, ich bin nicht so der Rezessionenschreiber, da ich aber bei der Suche eines Bluetooth DAC auf diverse Probleme gestoßen bin und mit Rezessionen wie „der ist schön laut“ gar nichts anfangen kann, habe ich mich entschlossen meine Erfahrungen hier mal kund zu tun.Ich war auf der Suche nach einem hochwertigem Bluetooth Kopfhörer Verstärker um dem immer häufigerem Verschwinden der 3,5mm Klinkenbuchse entgegen zu wirken.Ich setze unterwegs, sowie bei heimischen Arbeiten im Haus und Garten nur In-Ear Hörer ein. Da ich bereits gute Knöpfe besitze kommt nur ein BT DAC in Frage.Nach längerem Querlesen im Netz, viel der Fokus auf 2 Geräte. Dem hier angebotenen Fiio BTR3 und dem Radsone EarStudio ES100. Der BTR3 wird in einer schicken weißen Verpackung aus Kunststoff und Pappe verpackt. Auf der Rückseite gibt es ein Rubbelfeld, unter dem ein Code zu finden ist, über den man im Internet überprüfen kann ob man ein echtes Gerät von Fiio oder ein Plagiat erstanden hat. Im Karton findet man eine Schnellstartanleitung in mehreren Sprachen (auch Deutsch), ein ca. 20 cm langes USB-A zu USB-C Kabel und eine Trageschlaufe um den BTR um den Hals hängen zu können, eine spezielle Bluetooth Information zu den einzelnen Codecs, eine Garantiekarte sowie natürlich der BTR3 selbst.Da der BTR3 NFC unterstützt, ist er via NFC auch schnell mit dem Smartphone verbunden. Dort meldet er sich als Fiio BTR3 und verbindet sich mit dem höchstmöglichen, gemeinsamen Codec an. In meinem Fall ist das HWA in 96khz / 24 bit und 990 kBit/s.Ich installierte zunächst die Fiio-App und stellte fest, dass die aktuelle Firmware (gerade mal einen Monat alt) bereits auf dem Gerät ist.Nun stecke ich meine Knöpfe dran und hörte Musik Querbeet in unterschiedlichen Qualitätsstufen, mal eine 320 kbit MP3 mal eine 44,1/16 bit FLAC, dann eine 96/24 bit FLACH oder auch eine 192/24er DSD Datei. Alles hört sich sehr sauber an. Der BTR3 rauscht nicht und der Klang ist definitiv besser als direkt (über den USB-C zu Klinke DAC von Huawei) ans Handy gesteckt. Der Zuspieler ist in diesem Fall hier ein Huawei P20. Aber es kommt immer wieder zu Dropouts, also kleinen Unterbrechungen in der Wiedergabe. Dies ist ein generelles Problem, wenn man via Bluetooth HiRes Audio wiedergeben möchte. BT und WLAN funken beide im 2,4 GHz Band und stören sich leider. Bei allen von mir getesteten Geräten trat das Problem auf (Sony Xperia Z5, Sony Xperia XZ1 und XZ2, sowie dem Huawei P20 pro). Um eine stabilere Verbindung zu erlangen muss man hier die Verbindungsgeschwindigkeit herabsetzen. Das geschieht in den Bluetooth Einstellung des Smartphones, wenn man dort auf die Einstellung des Fiio BTR3 klickt. Hier wählt man „Ausgeglichene Verbindungsqualität“. Hier setzte man die Geschwindigkeit von 990 kbit/s auf 330 kbit/s zurück, was zu einer stabilen Verbindung führt. Alternativ kann man auch in der EarStudio-App den Codec z.B. auf AptX-HD ändern, dann ist die Verbindung auch stabil, jedoch verbindet sich der BTR3 beim nächsten Mal wieder via HWA in höchster Qualität. Man kann in der Fiio App jedoch den HWA und LDAC Codec deaktivieren. Dann verbindet sich der DAC im AptX-HD Modus, hier konnte ich keine Störungen feststellen. Alternativ kann man auch die Google Standortdienste und das WLAN deaktivieren, dann treten ebenfalls keine Störungen mehr auf (auch im HWA oder LDAC Modus nicht), aber führt dazu, dass man HiRes-Quellen wie z.B. Deezer, Tidal o.ä. nicht mehr streamen kann.Verarbeitung / Haptik:Das Gehäuse des BTR3 ist vollständig aus Aluminium mit einem Glasdeckel, die kleinen Tasten sind sehr straff und gut ertastbar. Das Gerät wirkt also auf den ersten Blick sehr hochwertig. Auch die Verpackung ist ansprechend, meiner Meinung nach aber schon über das Ziel hinaus. Ein Kunststoffkasten hätte es nicht sein müssen.Bedienung:Der BTR3 hat nur an einer Seite Tasten. Hier auch nur Ein/Aus, Play/Pause und eine mit Plus- und Minussymbol gekennzeichnete Wippe für Lautstärke und dem Skippen von Titeln. Um die Lautstärke im größeren Umfang zu ändern muss man die Tasten wiederholt drücken. Um einen Titel zu überspringen die Taste lange gedrückt halten. Hier hat Fiio allerdings eine interessante Logik entwickelt, durch Drücken und Halten der Minus-Taste, springt man zum nächsten Titel, mit der Plus-Taste springt man einen Titel zurück. Das ist zwar ungewöhnlich, aber man gewöhnt sich daran.Akkulaufzeit:Auch beim Fiio BTR3 habe ich den Akku getestet. Ich habe den BTR3 via LDAC 96/24 mit 330 kbit verbunden und in angenehmer Lautstäre rund 7,5 Stunden Musik hören können. In den letzten 30 Minuten blinkte das Fiio Logo rot. Ein akustisches Warnsignal, dass der Akku bald erschöpft ist, kommt zum Glück nicht.Das ist meiner Meinung nach noch OK, aber weit von den 11 Stunden der Werksangabe entfernt. Leider fehlt in der App eine Akkuzustandsanzeige. Hier kann man nur auf die Bordmittel von Android zurückgreifen, was erst ab 8.1 möglich ist.Fazit:Vom Sound her ein echt klasse Teil. Die Verarbeitung sucht in der Preisklasse seines gleichen. Der Akku ist noch gut und auch sehr schnell wieder aufgeladen. Gegenüber dem Radsone EarStudio ES100 ist hier auch der USB-C Anschluss sehr zu begrüßen. Der Lieferumfang ist wie man es bei so einem Gerät erwartet und er unterstützt wirklich alle derzeit aktuellen Codecs. Auch den neueren, lizenzfreien HWA (LDAH) Codec. Einziges Manko ist hier sicherlich die App. Es gibt keine eigene App, man muss den (kostenlosen) Fiio Music Player installieren. Dort kann im Player der Kopfhörer ausgewählt und konfiguriert werden. Die Einstellungen werden dann im BTR3 abgelegt und gelten somit Systemweit. Also eine Equalizer-Einstellung, die im Kopfhörer vorgenommen wurde findet auch außerhalb der Fiio-App Anwendung.Ein rundum tolles Gerät mit einem gutem Preis/Leistungsverhältnis.Plus:- sehr handlich, klein und leicht- sehr guter Halteklipp- satter, ausgewogener Sound, sehr weicher Bass- hohe Abhörpegel möglich- Unterstützung für HWA (High Resolution Wireless Audio)- der zu verwendende Codec (HWA, LDAC, Aptx-HD etc) kann erzwungen werden- ausgesprochen gut verarbeitet, nur edle Materialien (Glas / Aluminium) verwendet- ergonomisch sinnvoll angeordnete Tasten- aktueller USB-C Anschluss- auch zum Telefonieren geeignet- Unterstützung von Sprachassistenten- günstig- vergleichsweise umfangreicher Lieferzustand- Anleitungen und Hinweise in deutscher SpracheMinus:- Akkulaufzeit könnte besser sein (knapp 7,5 Stunden)- kein symmetrischer Ausgang- keine Ladezustandsanzeige in der App

I bought this device to help with the removal of the headphone jacks from modern phones. I wanted something that had all the different wireless codec to in a way “future” proof the device for future things. Although, it didn’t use Bluetooth 5.0, which does increase the bandwidth of the wireless signal, and will eventually allow for maybe even dual stream audio channels, I can understand the manufacturer wanted to use a technology that has already matured somewhat with Bluetooth 4.2, and since I don’t really plan on doing dual streaming, this was not a particular con for me.I use an iPhone so my codec is limited to AAC, so the LDAC, AptX-HD, and all the other fancier codec didn’t particular matter to me, and I don’t think I’m sonographically trained enough to really hear the difference between loveless high-bit audiophile grade files versus simple 256kbps AAC files over Bluetooth (although Apple has the best implementation of this), saying that I do use Tin Audio T3 headphones and HD58x for my listening pleasure, and I can at least tell you that they are probably as good as when hooked up to my computer as when listening it through wirelessly through streaming services, Google Play, and with some lossless files that I have in both FLAC and ALAC formats. Then again, I don’t think I could hear much difference between using this Bluetooth receiver from the much less expensive Bluetooth receivers by cheaper Chinese companies like MPOW, which is about half the price, but then these don’t utilize some of the more expensive ones.Features on this little device, once hooked up to the FiiO music application on the phone actually is quite impressive. One of the things that annoyed me out of the box was the constant blinking FiiO logo, which tells you about the connection and the type of codec it is using, once again to me it didn’t really matter because in only have AAC on my Apple product, but this could be turned off in the application, the connectivity to the app is shoddy at times. It does have these digital modifications about the sound, which to me makes absolutely no difference, but then again, unless you are really into music and listen for it on a daily basis, its unlikely (I have no references) it will make much of a difference.The battery life is good, and will last me throughout the day, but this comes to the reason I don’t really like this device. I mainly bought it because I wanted a device that would let me use USB-C to charge the device, but when using a direct USB-C to USB-C cable it was not only unable to charge, but the reported DAC feature didn’t work. I don’t think I found that anywhere in the documentation or description of the device that this wouldn’t work though this method, all I saw was USB-C connectivity, and that may be my fault, as USB-C is just an interface, doesn’t mean that it will work with USB 3.x standards, and this may be just be USB-C 2.0 connectivity. Regardless of that however, means that I could only use the included USB-C to USB-A cable, which is quite short, and I would have to buy another one of these to get it working. Once again one of the main reasons I bought this so that I would have to bring less cables, and have less cables around for it to work and have less clutter of cables at home, which is a BIG MINUS for me. I thought I was going to be able to charge this with the same cable I charge my iPad and maybe even get my iPad to charge it when I go traveling.The device itself is small and sleek, it has a very glossy front end, and the back clip feels like its metal and of somewhat high quality. It has both the USB-C (2.0?) charging port and the 3.5 mm headphone port at, I guess the bottom, of the device. If you do end up using this as a DAC for your devices it may be somewhat a bit annoyance because you’ll have to plug in the USB on the same side of your headphone jack, especially if you have a very large headphone jack that has a 1/4 in jacks. If you use a MacBook device or USB-C only laptops, better get that dongle out, because the USB-C to USB-C connectivity doesn’t work! It did work when hooking it up to my PC with USB-C to USB-A, but didn’t work with USB-C to USB-C port.The connection is good, it goes through walls, and there no real big drop off until about 30 meters or so, as advertised with Bluetooth 4.2. It can connect to two devices, which is useful if you like switching between two devices, which I do, music on the phone and video on the iPad. The buttons are tucked away on the side, are small, but that’s because the device is small, and well, not much places to fit it. They are different shapes, so you should be able to feel for the button. The skip track and next tract are long presses on the volume buttons, which is not the best in the world, if you want to skip through multiple tracks, but then again if you need to do that, just pull out your phone or device.The phone ability is just average, microphone is passable, and you can answer calls like any other Bluetooth device.Conclusion:Device is nice with a good Bluetooth receiver that does as it’s advertised, at least for my needs. I can’t evaluate the reason why many people may buy this device, for it’s advance codec’s, but for the AAC codec it does a good job. When hooked up as a DAC, it functions quite well with my PC computer and through the USB-A. Major con will be that the USB-C to USB-C doesn’t work! At the end of the day, I think it’s price tag is a bit much, $10 less and it would be ideal. For me, they make a dedicated audio player for $20 more, although they don’t have AptX or LDAC, but I just need AAC.If you want a small dedicated Bluetooth receiver that can do multiple codec and don’t care about the USB-C connectivity, then there is not much more premium than this for it’s price. If you want one with AMP/DAC support, another company makes one for $20 more (I have not tried it).TLDR:Pro:#1. Sounds good, if that’s all you are looking a Bluetooth receiver with all the advance codec#2. Looks handsome#3. Quality seems nice#4. Vol control on device and receiver#5. Connectivity average (30 M through walls)#6. SmallCon:#1. NO USB-C to USB-C connectivity!!!!#2. USB and headphone jack same side#3. Janky controllers#4. FiiO makes dedicated audio players with same functions for $20 although no higher advance codecI’ll probably return my unit after a week of usage and testing

Works really well

I came a bit late to the game of BT DAC's as I used to be an unbeliever of BT audio in general.I got a pair of Sennheiser Momentum True Wireless earbuds for the gym and although they sound reasonably good, they boast a pronounced V-shaped sound signature which is not to my liking. It might be energetic and uplifting for gym and sports but I'd never classify it as Hi-fidelity sound signature according of course to my personal standards and preferences.All these months I kept hearing good things about this little adapter which have won design awards while other manufacturers subsequently followed up with their own offerings to rival BTR3 (Shanling, Hiby etc). Then suddenly the other day I stumbled upon an open box deal for £39 on AdnancedMP3Players and decided to give BTR3 a go. And, boy I'm so glad I did!This is an excellent little BT DAC adapter which is smaller that you'd think and seriously lightweight. Controls are also fairly intuitive compared to the bothersome touch controls of my Sennheiser buds.As soon as it arrived, I charged it for an hour or so and dived in its majesty. At first I tried it with my Beyerdynamic DT-150 and the Sennheiser HD650 and it sounded muddy, overall sub-par and anaemic. I was hoping it could handle higher impedance headphones as the small USB-C DAC DC02 by iBasso I also own(excellent that one as well in its own right) does extremely well with the DT-150 and performs respectably with the HD650 too(not the most optimal pairing in the world but still acceptable). Well the BTR3 does not boast such power. In short, I wouldn't recommend connecting to it anything with impedance higher than 80-100ohms, otherwise you are going to be disappointed.On the other hand, pair it with something reasonably efficient and you are going to be blown away! I tried it with my modified Hifiman's RE-400 as well as with the Etymotic ER2XR and ER4XR and the results were a revelation to me! I couldn't believe an adapter of this size could bring the best out of the infamous Etymotics. Honestly, I don't miss a lot of things compared to listening to them wired!A few things one has to consider:- The BTR3's signature is fairly warm so it will perform better with neutral-linear sounding headphones and iems.- As said above, stick with efficient in ear monitors or full-sized headphones (ATH-M50X?).- The LDAC codec gives out the best results by a country mile. I hooked it to my Note10+ and made sure under development options the aforementioned codec is set to priority as well as the option ''optimized for audio quality'' is checked. If your source device/player/mobile phone does not support at least APT-X HD you won't get the best out of this little wonder.- Bluetooth range is not crazy big. Be prepared to hear drops if you walk away from the transmitting source. For me at least that's not a problem at all as I very rarely plan to walk more than 2 meters away from my phone.- In real world use while utilizing high quality codecs such as APT-X and LDAC you will get 7-8 hours of use which equals to 2-3 day commutes.- Performance through Spotify is excellent but playing your own files through USB Audio Player Pro is way better! Again, I don't miss the wired connection with my iems under this configuration. It has a pitch-black noise free background.I'd also suggest you to get the short FiiO MMCX cable as long as you have iems with MMCX connectors. It will compliment your whole combo as you don't need very long cables with this as your earphones are going to be connected to the BTR3. A word of note though, the Etymotics have proprietary MMCX connectors that won't fit this FiiO cable.All in all this is an excellent device and rather essential today if you happen to own a pair of good in ear monitors that you love and don't want to part ways with them or compromise their sound quality.Get one, you won't regret it. Especially at £39, it's a steal!