It was great. The sound output is good
Loving the product, however experiencing some minor issues with pairing it using a BT100 transmitter when trying to connect 2 headphones. However that's largely to do with the transmitter, I suppose.
I am not an audiophile, however it sounds great. Button controls are responsive and clearly marked. The app is there to adjust bass and highs. I bought this to replace my Bose QC35 1st gen.