Audio-Technica ATH-CKR90iS In-Ear Headphones (Open Box) - Discontinued xlr-4 male 4 Knowles Drivers and 2

4 Knowles Drivers and 2 Sonion Drivers each side

Input impedance: 30 Ω

28 oz) (L side)

Silicone Eartips (S

Audio-Technica ATH-CKR90iS In-Ear Headphones (Open Box) - Discontinued xlr-4 male 4 Knowles Drivers and 2Audio technica ATH CKR90iS Earphones Featuring dual phase push pull drivers of different diameters (13 mm and 10. 4 mm), the Audio technica ATH CKR90iS Earphones deliver amazingly clear Hi Res Audio. In the unique push pull system, the drivers face each other, but are wired out of phase, providing lower harmonic distortion and improved damping and bass frequency control. The use of drivers with different diameters improves high frequency response. The