The Edifier TWS NB2 Pro earbuds are a more refined version of its predecessors - the TWS NB and NB2 - and, it's also the successor since Edifier no longer sells the original TWS NB nor the NB2 model, which is no longer available for sale on Edifier's website. If you're wondering what improvements have been made over the NB2, in a nutshell, the TWS NB2 Pro has faster charging time, better active noise cancelling (anc) performance, quick charge support for both earbuds and charging case, spatial sound mode and AAC support. 

Cosmetically, the Edifier TWS NB2 Pro earbuds retain the same look, sweat resistance (IP54) and the thick v-shaped stem and touch control for controlling various functions such as skipping to next track, answering/ending calls, voice prompt and play/pause. Volume control and skipping to previous track are not supported (same as the NB2 version). The touch control panel works well and the sensitivity can be adjusted via the Edifier Connect app.


Aside from game mode and anc/ambient mode, the NB2 Pro earbuds have an extra audio mode called spatial (3D sound), which delivers a similar experience to surround sound in headphones, although not quite as immersive. The Edifier TWS NB2 Pro bluetooth 5.0 chip doesn't support multipoint pairing but, it does support SBC and AAC audio, unlike the NB2 version Game mode reduces the latency down to 80ms, which is the same as the NB2. The low latency reduction works well for low resource intensive games such as car racing games. For competitive online gaming such as first person shooter games (e.g. call of duty and PUBG), games mode isn't as optimal as 40ms, which the now obsolete aptX-LL codec used to deliver.


The TWS NB2 Pro charging case is also the same with same dimensions, measuring 6cm long, 5cm wide and 3cm high. It has the same pebble stone style as the TWS NB2 with a leatherette outershell, plastic hinge lid and a chrome engraving of the Edifier logo on top. 


With anc turned on and 50% volume, TWS NB2 Pro earbuds manage 7 hours of playtime and 9 hours with anc turned off, which is the same as the NB2 mode so, no improvement there. The NB2 Pro charging case re-charges faster in 1.5 hours, while the earbuds recharge in 1 hour, which 30 minutes faster than the NB2 earbuds. The NB2 Pro earbuds and charging case also support 15-minute quick charge (2 hours)

The Edifier TWS NB2 Pro earbuds have 3 microphones per earbud;hence 8 microphones in total. Two of those mics are for cancelling outside noise. The NB2 Pro uses the same hybrid design (feedforward/feedback anc) but, it works better than the NB2 at suppressing low and midrange frequencies, giving a better noise reduction (38dB). The ambient sound feature also works well and can be adjusted via the Edifier Connect app. The microphone for calls is located at the tip of the stem and also integrates noise cancellation, which does a good job at isolating the voice, making it loud and clear and without being robotic.


The pairing process is the same too. Simply open the charging case lid to activate automatic pairing. You can switch between earbuds for mono listening and, there is no re-connection delay when taking the earbuds out of the charging case. The in-ear detection feature (auto play/pause) does have a bit of delay (~1sec) but works without glitches.


The Edifier Connect app is a nice mobile app to use. It has a clean home screen that displays battery level for each earbud. The app gives you access to the same features as the NB2 earbuds so, you can adjust the sound of the voice prompt and touch sensitivity, as well as disable on-ear detection. The NB2 Pro does have an extra page on the app for the audio modes so, you can easily toggle between game mode, spatial and normal audio. 


The Edifier Connect app doesn't require creating an account but does have some downsides. It requires you to enable "display over other apps" (aka floating window), which is one of the most intrusive privacy permissions. Display over other apps is needed for certain applications such as messenger app or streaming apps when streaming games such as PUBG or Minecraft. It is not clear why "display over other apps" has to be granted on the Edifier Connect app since most earbud apps don't require such permission. The Connect app does not have a built-in equalizer or button re-assignment. Also, when you change new settings they revert back to default when the earbuds are power off.

As far as sound, the TWS NB2 Pro are equipped with the same 10mm dynamic drivers, which have the same sound tuning and 94dB sensitivity; hence loud volume. The audio quality is very good too with a powerful bass response, clear vocals and clean instrumentals. The TWS NB2 Pro earbuds weigh 6.5 grams each (13 grams), while the charging case weighs 40 grams and can hold up to 19 hours of extra extra charge. 


The Edifier TWS NB2 Pro ship inside the same leatherette hardbox with a thick foam insert, which you can use for storage. There is also an unbranded charging cable and two different size sets of soft silicone eartips. The included drawstring canvas pouch has Edifier branding and, it's internally lined with soft fabric. The pouch weighs 15 grams and measures 12.5cm long and 10cm wide. You can buy the Edifier NB2 Pro from amazon, the Edifier TWS NBQ earbuds. Check out the review of the Neobuds Pro dual driver.