Phiaton PS210

Disclaimer: This IEM is owned by a friend of mine.

Phiaton is a high-end brand of South Korean company, Cresyn, which was formerly known as Leemax. As they have been manufacturing OEM products for Panasonic, Audio Technica, and many other well-known companies for a very long time, they must be well-aware of what they're doing.

...Or are they?

PRO: PS210's frequency response well follows the diffuse-field tolerance limit assigned by ITU.

CON: Short bandwidth. Although the left unit is slightly faulty; this must be an isolated case.

ON SECOND THOUGHT #1: Unless inserted too shallow, frequency response linearity shall be well retained.

ON SECOND THOUGHT #2: With an added acoustic damping material at the nozzle, the tonality becomes less harsh.

ON SECOND THOUGHT #3: There are three acoustic vents located in front of PS210's housing.

ON SECOND THOUGHT #4: Whether this is a coincidence or not, with minimum amount of modification, the IEM can be tuned to sound pretty similar to AKG K702... Believe it or not!

ON SECOND THOUGHT #5: Phiaton PS210 needs more sub-bass and slightly less emphasis in the treble to be considered as Hi-Fidelity.