Squilink

, a digital oracle that mapped the soul of every earphone in existence. To the untrained eye, it was just a series of peaks and valleys on a screen. But to Elias, a mountain at 3kHz meant a singer was standing right in front of you, while a deep canyon at 200Hz meant the bass was "scooped," clean but perhaps a bit thin.

Tonality Only

: A graph shows how loud a frequency is, but it cannot tell you about technicalities like "soundstage," "imaging," or "note weight".

Squiglink - IEM frequency response database by Super* Review