I recently purchased the Audio-Technica ATH-M50x BT2 wireless headphones and have been using them for a while now. As an owner of the original M50x wired headphones, I had high expectations from the Bluetooth version. While the BT2 keeps most of the DNA of the legendary M50x intact, there are a couple of things potential buyers should be aware of before ordering.

The first thing I noticed is that the headphones are not as loud as the original M50x, both in wireless and wired modes. Even when connected via cable, I feel the new version lacks that extra punch in volume compared to the old wired M50x. The sound signature remains faithful otherwise, but audiophiles looking for higher playback levels may be disappointed.

Secondly, the AT Connect app that is touted to allow customized EQ settings may not work properly with your device. For some bizarre reason, neither my iOS nor Android smartphones are detecting the headphones on the app.

This could be frustrating for those hoping to fine-tune the sound profile. Thankfully, I am okay with the default tuning, so it's not a deal breaker. But the app functionality is questionable based on my experience.

Other than these minor niggles, the BT2 performs well. The Bluetooth connectivity is reliable, and the battery life is decent. Build quality is top-notch, as always with Audio-Technica. So in summary, fans of the M50x will enjoy the BT2 but should keep the above points in mind regarding slightly lower volume levels and finicky app support. An otherwise worthy upgrade for those seeking wireless freedom.