Fiio’s BTR3 adds hi-fi Bluetooth to any wired headphones for $70 bucks


There are two types of people in the world: Those who want a headphone jack, and those who have moved on.

Fiio’s BTR3 is a gadget made for the former. It’s a thumb-sized Bluetooth receiver that allows you to connect your old wired headphones to your phone without a dongle, but it also sounds better than most phones or laptops without a headphone jack too. It costs $70, is built by reputable brand known for its portable amplifiers, and comes class-leading codec support.

And by class-leading, I mean every significant Bluetooth codec: SBC, AAC, AptX, AptX HD, AptX Low Latency, LDAC, and even Huawei’s new LHDC are all on board – AptX LL and LHDC are particular rare. I’m not about to start an argument on which codec is the best, but that’s the beauty of the BTR3 – you can choose whatever you like. Everyone but the “never wireless” crowd should be satisfied, but even those folk can use the BTR3 as a wired dongle via the included USB-C cable.

I personally stuck to LDAC for most of this review, but tried all the other codecs too. The BTR3 actually lights up a different color for each codec, a small but welcome touch in case you’re not sure what codec your device is outputting. The BTR3 uses Qualcomm’s latest Bluetooth chip and provided as stable a connection as I’ve gotten from any Bluetooth device; I didn’t see any dropouts in a couple of weeks of testing.

It also sounds really good. Even using Bluetooth, I thought the BTR3 provided a better output than the 3.5mm jack on Samsung’s Note 9 and the OnePlus 6, or the dongles included with the Google Pixel 2 or Huawei’s P20 Pro. It’s rated for headphones up to 100 Ohms, and indeed I had no trouble driving anything below that number. The only smartphone I tried that outperformed the BTR3 was LG’s G7, but LG is practically in a league of its own for audio. Oh, and the BTR3 comes with a microphone so you can take calls without pulling out your phone, assuming the unit is clipped on your shirt or is otherwise near your mouth.

So that’s it right? It sounds good, looks good, and won’t break the bank. There’s just one wrinkle: Radsone’s EarStudio ES100, which I reviewed a few months ago.

Do some research on Bluetooth receivers, and the ES100 is the device most likely to show up as an alternative. It costs more, at $99, but in turn provides more power and customization thanks to an impressively thorough accompanying app. Radsone’s has added a ton of features via firmware updates since. It ‘only’ had AptX HD at launch, but now supports LDAC too.

Soundwise, the output from the 3.5mm jack is quite similar. The BTR3 uses a slightly newer DAC (digital-to-analog converter), and sounds a hair less bright than the ES100, which emphasizes the treble a bit more. The ES100 is also a little bit louder out of its 3.5mm jack. Mostly, the difference is negligible, but I think I prefer Fiio’s presentation ever so slightly.