Fir Audio Project K UIEM Brand_Plussound By removing damping material that

By removing damping material that had been characteristic to HD600 and HD650's design – and bass shortfall – Sennheiser were able to lower the resonant frequency of HD660S2's driver from 110Hz to 70Hz

so Model 475 only works more happily when presented with sub-30ohm loads from Audeze's LCD-5

4V high-voltage battery pack improves power efficiency and transient response capabilities by minimizing ripple interference

Headfonics drew attention to “Hyper mode standing tall over Class A and Class AB"

dynamics and full musical immersion follow you on your journey to audio nirvana

Fir Audio Project K UIEM Brand_Plussound By removing damping material thatLaunched this Canjam Singapore (2025), the Project K is encased in sapphire glass faceplate and a titanium shell, exquisitely small enough to fit most ears. For FIR Audio, the Project K is the pinnacle of audio technology, and the sound they'll be proud to present. Lush and full, the Project K gives more than its size, and allows for long hours of easy listening without shrilly peaks. Working with global top artists like Billie Eilish, Sabrina