Anyone used Audiolab portable headphone amp with your smartphone ?

[Taric]

I want to buy a headphone amp for my smartphone. The audio from smartphone is not good to present music details.
I searched "headphone amplifier" on Amazon and found the "Audiolab portable headphone amplifier" with 5-star reviews.This device is what I want.
Anyone here have this device here ? Could you recommend something for me ?

 

[joeinid]

Welcome to the forum, thank you for joining.