“I went to shop for upgrade from my beloved Westone 4. Didn't bother to get custom. Aiming around $500-1000 options Audition candidates 1. Ultrasone IQ $730 2. AKG K3003 $1,140 3. Sennheiser IE800 $ 660 4. Aurisonics ASG-2 $653 5. Heir Audio IEM 5.0+ $ 690 Here are the mini review of IQ and versus of the other candidates. ...” --darkinners
First custom earphone in the world with a single 14mm dynamic driver couples with advanced frequency suppression technology (FST). Frequency Response: 10-20000 Hz Impedance：16ohms（including cable） Sensitivity (at 1kHz)：116dB spl (1mW) Important: Due to the size of the driver, people with small ears may not be able to fit. We would need your ear impressions to check for sizes...