What Hi-Fi? have published the Australian Hi-Fi review of LUMIN U1 online.
During the review they state:
The Lumin App is fantastically intuitive and easy to use
You won’t fail to be impressed by the sound quality from the Lumin U1 Mini.
But the bass… oh the bass! The Lumin U1 Mini reproduced the very deepest organ notes pitch-perfectly and with true authority.
Superb execution. Flawless sound. Fantastic app