Aluminum housing and Brass back plate.
MIROAK is made of aluminum + brass.
There are three types of brass, and the metal coloring is done by “momentum factory Orii” using a traditional Japanese technique.
The brass on the back plate is green “HANMON RYOKUSUI Color”.
Each one has a different pattern and color. No two are alike.
MIROAK-B sounds more vivid in the mid-high range than MIROAK-C.
It is milder than the stainless steel MIROAK-S.