Ultrasone Saphire professional In-Ear-Headphones, made of superior metal die casting quality, 2-way hybrid technology: high performance BA-Driver + electrostatic dual tweeter, frequency response: 10 - 50000 Hz, 25 Ohms...

Shure KSE 1200, electrostatic InEar-System with Single-Microdriver earphone and DAC-preamp, highest sound qualitiy, ultrathin membrane, Kevlar reinforced cable for a long lifetime, 10 - 50.000 Hz, 113 dB SPL max, weight...