Headphones — BASN Audio Bmaster 2-Pin

The Bmaster 2-Pin is a closed wired in-ear monitor from BASN Audio, built with a triple-driver configuration and a detachable 2-pin cable system. BASN Audio has refined its in-ear monitor line over five years against the brand's own strict internal standards, and the Bmaster represents the entry point into that broader IEM catalogue, positioned for musicians, audio engineers and everyday listeners alike.

Key specs that matter

Rated response is 20Hz to 22,000Hz. The triple-driver configuration is specifically tuned for a balanced, coherent presentation from low to high frequencies. The detachable gold-plated 2-pin cable uses a 0.78mm connector with a limit-slot protection design specifically engineered to prevent pin breakage and extend the interface's service life considerably beyond a fixed-cable design. BASN sampled thousands of different ear models during development to achieve a fit the brand states rivals custom in-ear monitors, aimed at staying securely in place during walking, running and other active use. A 12-month replacement warranty is included from the date of purchase.

Sound and use context

BASN describes the tonal balance as coherent from top to bottom, with full bass that keeps detail in the mids and highs, good bass impact, a clear midrange and beautiful treble, and likens the character to sitting behind a real drum kit.

Pairing

As a passive wired in-ear monitor, no separate amplification is strictly required for use with a phone or portable player, though the detachable 2-pin cable allows connection to in-ear monitoring systems, in-flight entertainment systems and other 2-pin-compatible mobile devices without needing an adapter.

Alternatives

BASN Audio's Bmaster PRO sits above this model with an added balanced armature driver alongside dual dynamic drivers and passive noise isolation up to 37dB.