In-Ear earphones from In Ear Monitor series. Decked out to the nines, the NINE-1 offers high-resolution sound in a compact slimline housing. Designed and hand assembled at our audio design lab in Nashville, Tennessee, a patented Hybrid Driver System with a premium 9.25mm driver augmented with our Hybrid Dynamic Balanced Armature tweeter yields a rich, wide frequency range with crisp highs. Other features include a deluxe carrying case, 1/8” to 1/4” adapter, 3 sizes of memory foam and 4 sizes of proprietary TPE tips, cleaning tool and cable. Frequency Response: 10 Hz - 21 kHz, Sensitivity: 109 dB, Impedance: 16 Ohm, Two-wire Talon cable, Color: Black Metallic