The WH-900N is a good pair of headphones from Sony. They are comfortable to wear for long hours and the foldable ear cups allow you to flatten them for easy storage. They come with a fabric pouch that can protect them from scratches. However, it cannot protect them from hard falls or water damage. The design is sturdy and the hinges fit well with a click when they are folded up. The ear cups have a flexible design and the headband is reinforced with a metal frame.
The sound quality is excellent for the price. The bass is deep and full and the mid-range has a clear and balanced response. The treble is also well balanced and can play the lead instruments and vocals well. The noise cancellation performance is a bit below average, but it’s not too bad.
Sony’s app offers a good selection of features and you can customize the equalizer through presets or by personal parameters. It supports High-Resolution Audio, which upscales compressed digital music files to near CD quality and can bring out the details of the original recording. It also supports LDAC, which has a transfer rate of up to 990 kbps and can transmit thrice as much data as standard Bluetooth audio.
The WH-900N is a solid pair of headphones, but there are better options in the same price range. The AKG N700NC has a longer battery life, a handy auto-off timer, and more customization options through the companion app. The AKGs have a slightly more natural-sounding default sound profile and better isolation.