【Circinus】象徵物是繪圖圓規，原因是聲音取向平均，面面俱圓，不會偏向任何一方。
Circinus means “Compasses". The sound orientation is balanced, well-rounded. Just like a circle, it won’t biased to a specific side.
Specification
3 Balanced Armature Drivers
2 ways passive crossover
Frequency：20Hz-19KHzSensitivity：112dB SPL/mW
DCR：19.6 ohm
Noise：26dB
