Sennheiser Consumer Audio BTD 600 Bluetooth® Dongle - USB-A/USB-C Adapter with AptX Audio Codecs for Stable, Sound - Listen to Music, Make Calls, and Watch Videos

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.

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.

This dongle performs wonderfully for audio quality and range, but has poor latency for gaming. For videos & movies, it is good enough. I upgraded from a Momentum 3 with a Creative BT-W3 dongle for atpX Low Latency. I compared the Sennheiser BTD 600 Bluetooth adapter vs. the Avantree DG60P for the purposes of wireless PC gaming on Windows 11 with aptX Adaptive on a Sennheiser Momentum 4 Wireless. The BTD600 on firmware 1.22.0 has about 100ms more latency than the Avantree DG60P in LL mode. Surprisingly, the DG60P only manages an extra 5-10 meters of range over the BTD600 despite the antenna. The DG60P seems to win/tie on all fronts including price. You also get the benefit of instantly switching to aptX-HD whenever you want, if you can hear the difference. The BTD600 only wins on portability and comes with a USB-C adapter. Since I need headphones for wireless PC gaming and I'm sensitive to latency, I'm returning the BTD600 and keeping the DG60P. IMPORTANT: disable the microphone in your windows settings! If you don't, the audio quality will be terrible. This was the exact same situation with both dongles.

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 can't believe the difference in sound quality! It works perfectly. Be sure to read the quick start guide because it's a little tricky to setup. Apple users...you need to know that you will no longer be using the internal Bluetooth, you will now be using the adapter. You actually pair your headphones to the adapter. Also, be certain to download the Momentum 4 app on your iPhone. There, you can see if you are now using aptX, which is necessary to transmit the music in High Resolution. If the CODEC doesn't say aptX, you are not getting the highest quality sound. Keep trying.

Hoped to use Momentum 4 with PS5 with this adapter, technically it works but sound is awful. I updated the firmware to the latest and the pairing was simple enough but once connected to PS5 the stream is basic and limited. Voice fairs a bit better but that isn't saying much. I did a quick search to see if I was missing a setting or something but saw a post saying the adapter stays in HFP mode which would explain the very poor audio performance.

Nice product to have. Works with my phone (S23U) and my Windows PC. Nice to be able to use aptx hd or aptx adaptive with both my phone and my PC. It's small, and is not inconvenient when plugged into my phone. Light indicators let you know whether you're connected via SBC codec or Aptx. Only thing I wish is that it had an app or some type of way to manually change the codec. Also, volume buttons and media control on my headphones do not work with this dongle when connected to my phone. It does work when connected to Windows PC though. Also this still doesn't circumvent the issue with PS5 USB audio putting Bluetooth headphones in call mode making them sound like crap.

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.

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.