After effortlessly pairing the BP81 to our S21 Samsung smartphone, we went ahead and listened to multiple videoclips, but also some podcasts. The voices can be heard loud and clear, mids are decent but the earphones do fall a bit short on the lows; the bass is not as well represented as on recently TWS models from Creative or Razer, but those are in a completely different price segment as well. We have tested the microphone quality as well while doing some test calls in Skype, and the quality of the audio is manageable…we think that the average quality of audio is also due to lack of HD audio codec support.