MIROAK-C
Aluminum housing and Copper back plate.
![](https://blog.634ears.com/wp-content/uploads/2022/10/DSC07919.jpg)
![](https://blog.634ears.com/wp-content/uploads/2022/10/DSC07918.jpg)
![](https://blog.634ears.com/wp-content/uploads/2022/10/DSC07924.jpg)
![](https://blog.634ears.com/wp-content/uploads/2022/10/DSC07914.jpg)
MIROAK is made of aluminum + copper.
There are three types of copper, and the metal coloring is done by “momentum factory Orii” using a traditional Japanese technique.
The copper on the back plate is blue “HANMON GAS SEIDOU Color”.
Each one has a different pattern and color. No two are alike.
The sound is even milder than brass and has a thicker midrange.