FiiOBTR17 Bluetooth 5.4 USB DAC AMP with LDAC, aptX Lossless. Dual ES9069Q, 10-Band PEQ, THX AAA 78+amps 3.5mm Unbalanced & 4.4mm Balanced (Black)

I’ve been using the FIIO BTR 17 on a daily basis since its arrival on January 21. I have it paired with the AFUL Performer 5, my only IEM, and have been very impressed with the quality of sound. The Bluetooth functionality is working flawlessly. The build quality is excellent and the battery life seems fairly decent, so no complaints there. I’ve used the BTR 17 with an M1 iPad Pro and the sound quality for exceeded my expectations and that was in the PC mode. I am not in a position to use the desktop mode as of yet. I’m very pleased with this purchase and would highly recommend it.

If you're going back and forth between this and the BTR7...I have both and the 17 runs circles around the 7 sound wise. There's simply no contest. The BTR17 easily has greater resolution and exerts much more control over my Campfire Audio Dorado 2020's. On top of that you get a volume knob. As far as Bluetooth is concerned the 17 doesn't have a menu selection for which device you want to connect to, instead, you just go into your bluetooth devices on the source device(phone) and select it and it connects quickly. Mostly, I'm impressed with the significantly better sound quality vs the BTR7 which I previously felt was at least equal to or better than the ifi goblu.One MAJOR consideration with the BTR17 is that it's essentially incompatible with sensitive IEMs, such as the Campfire Audio Solaris 2020, which will leave you with an audible ticking sound that doesn't go away. The Solaris2020 is known to be sensitive(I can hear background hiss with a Chord Mojo2 so I can't fault the BTR17 too much at this price point. I've been in contact with Fiio tech support and I don't believe I have a defective BTR17). I have only two other minor issues with the BTR17. First, the carry case it comes with should really have a clip instead of the leather belt loop button thing it comes with. Also, given the size of the device(really only slightly larger than a BTR7) the battery life could be longer. It's rated at 8 hours but in reality if it's like the BTR7 it'll be more like 7.

The product arrived brand new as described. However, the BTR17 did not increase the sound quality or volume level when connected to my B&O Beoplay H100 earphones with the included USB to 3.5 mm cable. I will not give FiiO anything less than 5 stars because the BTR17 is a premium device made with premium materials for a great price. I'd be surprised if any wireless DAC/AMP combo will be able to address my concerns with the Beoplay H100's.

Bit of a preamble. I'm not one to prefer Bluetooth, and in fact I usually don't. Speaker technology has advanced so that even $20 earbuds from the right brand can sound amazing out of the right source, but when you try to stuff a Bluetooth radio, micro controllers, a dac/amp, buttons/controls, battery in a package that fits in something the size of a gumball, things get rough. Bluetooth hissing that's usually hidden by cutting power to the amp when audio isn't playing, issues with the dac output being low resolution, you name it.In short, this device is amazing, because it solves all that. Good quality Bluetooth hardware in a pocketable form factor. You technically have a cable, but if you care how your music sounds this won't matter- it's not tethered to the source device after all. This outclasses every Bluetooth earbuds I've ever used even when paired with aforementioned $20 bargain buds from a good brand, and I've had the likes of Sony XM4 and others in that class. No ANC naturally, but certain IEMs or even over ears can easily work like plain old ear plugs and when the music starts the world disappears anyway.Battery life is quite good so far. Nonstop use for three hours on the LDAC codec and only down 80% on the first few runs. Will speak more on this as time goes on.Pair that kind of wireless performance with the ability to wire this in as a wired DAC(not to mention the microphone so you can take calls even on HD600s without needing to get a potentially problematic inline mic cable), and it's all around the perfect device to get Bluetooth conveniences on any headset, or even just to wire in and improve your laptop's sound output. I view it as a swiss army knife of portable audio, and as someone that can't buy most Bluetooth headsets within ending up unhappy, I fully recommend this. Regular Bluetooth headsets live and die by their batteries, but this can be permanently wired in as a USB DAC should its battery suffer the same fate.

Great sound, overall I'm happy with this device over the BTR7 and Qudelix 5k which I also own. However, unlike the BTR7 the 17 requires an app to change settings, nothing can be changed on the actual device, and the app is really slow(literally every action you take in the app causes a 5-10 second loading screen, including scrolling through the menus, on an S24). You only really need to use the app to set up and fine tune it initially, and it will function without the app, but it is still annoying how slow the app is.

This works really well, I am not saying that they will make crappy earbuds sound better, but they are able to drive pretty much all my earbuds, and my Focal Elegia, and give me freedom from a wired attachment. The device is not tiny, its pretty large for a portable headphone amp. It makes up for it in features, and clear controls. It's battery life seems to be great, but I have not sat with it on for 8 hours, so I can't speak to it's claims. I do like it though and the blue color looks great, and the "leather" cover works as protection, to keep it from getting scratched up.

Short and sweet. If you are looking for maximum frustration on something so simple this will do it. Connect it wired or bluetooth adjust the sound and then hear a faint tickle of music then nothing. All in all do not get this trash