Ultimate Ears launched the UE900, a quad BA IEM!! I personally loved the whole UE line up especially the TF10 which until now I think is still the king of universal IEMs. Can't wait to try this gorgeous IEM!
INTERNAL SPEAKER CONFIGURATION:4 proprietary precision balanced armatures
IMPEDANCE:30 ohms, 1 kHz
SENSITIVITY:105 dB SPL/mW, 1 kHz
FREQUENCY RESPONSE:20 Hz - 20 kHz
CONNECTION:3.5 mm (1/8 inch) gold...