TRN BA5 In-ear monitors adopt 30095 balanced armatures integrated 3-tweeter solution for high frequency, 29689 BA for midrange and 22955 woofer BA for bass. As a result, the high frequency can reach treble extension rich in detail, clear and sparkly, the mid can bring crisp vocals and rich and organic tones, whilst the bass driver gives deep controlled bass. Airflow Regulating Pressure Vent and New Type-C Connector. The airflow control helps equalize internal chamber pressure via the vent on the faceplate. A newly developed type-C connector can significantly protect the contact pins from accidental breakage, ensuring longevity and better wearing stability. TRN BA5 In-Ear monitors have a specially shaped front housing that follows a human auricle’s contour for utmost stability, comfort and sound isolation.