Japan's Stereo Sound magazine have published their LUMIN M1 review online.
During the review, Hisaaki Hijikata states:
What I liked was the quality of the Leedh Processing Volume Control, which suppressed the loss of resolution due to the lack of information felt by the previous digital volume-based devices, especially when the volume was turned down.
[Adele's] mouth emerges pinpointly in the center of the two speakers, and the orientation of the front and rear, that is, the way it emerges with respect to the background, also has a three-dimensional effect.
Although it is a state-of-the-art player that can enjoy high resolution and streaming, I would like to highlight my appreciation for the high-quality amplifier and volume which ensure the sound quality as an integrated unit.
The M1, which is incredibly cost-effective, is one of the hottest models available.