Ultimate Ears UE Reference Remastered, In-ear earphonesUnique technology, top class in design and sound. Also suitable for studio applications such as mastering@+@+, Custom Made 3-way high-end studio reference handset for mixing and mastering, Developed with the studio sound technicians of Capitol Studios LA, Bass driver, medium tone driver, high tone driver, 3-Way passive crossover, Perfect hold due to ear adjustment (imprint by hearing healthcare professional required), High attenuation of 26 dB, Replaceable cables by plugging system, Hard inner tube, Frequency response: 5 - 18,000 Hz (+/- 2dB), 5 - 25,000 Hz (-12dB), Sensitivity: 100 dB / mW, Impedance: 35 Ohm, Design: transparent with white faceplate with UE and Capitol logo, Connection cable selectable 121 or 164 cm, Including round metal case with engraved name. 3.5 mm to 6.3 mm stereo adapter, cleaning tool and damping adapter for impedance matching@+@+*Warning, Custom-made:* An imprint (ear mold) is required by a hearing healthcare professional to make this In-Ear headset. After your order you will receive an e-mail with all the necessary information for further processing. The delivery time is about 3 - 4 weeks after receipt of the ear imprint. Please note that no money-back guarantee can be granted for custom-made products according to our terms and conditions §4 para. 5.