CT-300 Pro by Clear Tune Monitors

When choosing a Custom In-Ear Monitor, if you are looking for great definition in mid-lows and lows, this is your choice. The CT-300 Pro can take your listening experience to a whole new level due to its powerful and clear sound, being the only model that plays nice with every player.

Link: https://cleartunemonitors.com/product_detail/39/CT-300-Pro/

Tech Specs:

Input Sensitivity: 124db-SPL @ 1mW
Freq Response: 20 Hz to 16 kHz
Speaker: Triple Balanced Armature
Impedance : 20 ohm @ 1 kHz
Noise Isolation: -26dB
Input Connector: 1/8″ (3.5mm)

Reviews:

https://www.barks.jp/news/?id=1000098260 (japanese)