Sennheiser BTD 600 Bluetooth® Dongle - USB-A/USB-C Adapter

I needed a dongle for my older Windows 10 machine specifically for my Bluetooth earbuds (Sony WF-1000XM6). Worked perfectly out of the box, and the firmware was already updated (note that according to various websites this is important to do). It shows up as a USB audio device, *not* a general Bluetooth dongle, so you don't have to deal with Windows at all. Your headphones pair directly with the dongle.

Update: Since I posted this review, the BTD-600 had a firmware update that has completely overhauled the device and improved the audio quality in major ways.For starters, the most recent firmware update claims to add support for the sample rate, 96khz. I say claims to because that's not what my Qudelix-5K Bluetooth DAC is reporting, and even before this update, Windows let you select 96khz. I suspect even if it did support 96khz, the Qudelix would not be able to receive it at that rate. It uses the QCC5124 chip, and if you look up the features, the chip doesn't seem to support 96khz. The first mention of 96khz audio came with Bluetooth 5.2. With the BTD-600 being a Bluetooth 5.2 adapter, it would make sense for it to support 96khz, but I don't have a device capable of testing it. For the record, it seems that chips that support AptX Lossless use Bluetooth 5.3, so I doubt this adapter will ever receive an update adding AptX Lossless.While I can't say whether it's actually transmitting 96khz, I can say that the 280kbps limit has been lifted. On my Qudelix-5K, I'm able to receive audio generally from 350kbps up to a maximum 430kbps, and the difference in audio quality is significant. Before, the audio quality was noticeably compressed. Not terrible, and the benefits to latency make up for those shortcomings, but also not great. Now, to my ears, it's functionally perfect, and the best part about it is that it does this without affecting latency. It still seems to deliver 80ms of latency, just with significantly better audio quality. This is very different from adapters that have separate low latency and quality modes, like the Creative BT-W5, which seems to at least double the amount of latency when in quality mode, and limits the audio quality in low latency mode, similarly to how this adapter used to work, and that adapter is 25% more expensive than this one, and in terms of its implementation of AptX Adaptive, it's just worse.For this reason, this is an exceptional adapter for movies and games, which, in my opinion, is the big draw of AptX Adaptive. If you just want high quality for music, AptX and AptX HD are open source now. On Windows, you can buy Alternative A2DP for $5 and get high audio quality, without needing separate hardware, and I'd expect more devices to start supporting AptX and AptX HD by default from now on, but high audio quality and low latency is something you can only get from AptX Adaptive, and even other, more expensive products aren't able to deliver what this adapter does.That being said, it's not completely perfect. I noticed some stutter. It's pretty bad when you first connect your device. Over time it becomes more stable, but brief instance of stutter still happens occasionally. Signal strength is far more important now than before, probably because it's not hard to keep a 280kbps audio stream stable, so you're going to want to keep a clear path between your headphones and the adapter, and try to keep distance as low as possible. Maybe this is improved with a Bluetooth 5.2 receiver/headphones, but I can't speak for that.

Works great to bypass apple products limited Bluetooth transmission for much clearer sound quality. Will not work with iPhone unless phone is also being charge due to power withdrawal limits of those devices. Works with iPad and laptops well and easy to connect.

Plugged this tiny dongle in and my connection issues vanished. It paired instantly, shows up as a dedicated audio device, and just works—no fiddling with drivers or menus. Range is excellent; I can walk to the kitchen without a single hiccup, and the link stays stable even in Wi-Fi-heavy rooms.Latency is noticeably lower than my laptop’s built-in Bluetooth. Movies and YouTube are perfectly in sync, and casual gaming feels snappier. Mic quality for calls is clearer too—coworkers stopped asking me to repeat myself. I tried it with a few headsets, including my Sennheisers, and switching between music and meetings is seamless.It’s small, sturdy, and the pairing button makes connecting new devices painless. If you’re tired of flaky laptop Bluetooth or want better call and video performance, this little adapter is a five-star upgrade.

Made me unable to use all the functions of my headphones. Which is why I bought my $300 dollar pair of headphones. It's frustrating because I bought this product to use my headphones with because I am having issues with the Bluetooth chip in my motherboard. Only for this product to completely diminish the functionally of of my headphones. Ended up returning this because it doesn't do what I need it too.

Man I love this thing. I didn't even know it existed until a coworker of mine mentioned it. Before, I was struggling with spotty Bluetooth connections. I thought it was my dongle and I kept buying other dongles but kept having the same issues. When I upgraded to this I had zero connection issues and on top of that, the sound difference is INSANE. It sounds just as good as if you plugged it in with the USB C cable. I really can't imagine not using this going forward.

I use this on my work laptop which only offers low quality bluetooth codecs, and was having connection stability issues. Now connection is rock solid, the higher quality codecs are great, I'm very happy.

This dongle is absolutely fantastic......when it works. If you have a Sennheiser headset, this will work with them. At first, the connectivity is really good but then there will be times where it will disconnect. To fix that, you would have to either turn off, then turn on the headset, OR unplug the dongle and plug it back in. I used this to have my headset wireless while being able to use my GoXLR while gaming, or streaming. It became an annoyance when it would disconnect during my gaming sessions or just simply listening to music. Even though I do think the price is a little on the high end for this issue, it does work really well, when it actually works if that makes sense. Even when there are other reviews saying the same thing I always get a product to try it for myself and I had it for a month and a half to give it a shot for the Christmas time since there is a longer return policy. Numerous times it has disconnected and I had to return it. The lag is very minimal, and the sound quality is still good. The dongle is a small size so you would be just fine that it won't take up much room in the back of your PC or wherever you plan on using it. Use at your own risk, however in my opinion with the connectivity issues that myself and others are saying, I don't think it's worth it. I ended up going wired connection instead.

En el pc de mi trabajo han bloqueado todos los dispositivos bluetooth y yo usaba cascos personales bluetooth. Este dispositivo me ha permitido seguir usando mis cascos. Los que tengan ésta misma situación, funciona.

Słuchawki Sennheiser Momentum 4 po Bluetooth w telefonie grają bardzo dobrze. Po podłączeniu tego transmitera grają jeszcze lepiej. Jeżeli posłuchasz muzyki przez adapter BTD 600 a po jakimś czasie przejdziesz na transmisję po Bluetooth standardowy to dopiero docenisz wyższość BTD 600 Wart tych pieniędzy. POLECAM

Improves the sound quality of my excellent earbuds (my Android phone supports only the most basic AptX, this dongle supports AptX Adaptive when connected to it). I have updated its firmware on my MacBook without a problem!

Der Adapter funktioniert einwandfrei und bringt klanglich definitiv einen Fortschritt. Ich nutze den Adapter mit meinem Mac.

Working perfectly, no setup needs to be done. Just uppdat the drivers and your good to go.