Sennheiser IE 600: 7mm Drivers in Amorphous Zirconia housing

Sennheiser IE 600 are wired headphones equipped with 7mm full range drivers. To equalize the sound characteristics, the company has developed resonator chambers, the dimensions of which must be maintained as accurately as possible. Therefore, it was decided to make Sennheiser IE 600 cases from zirconium – and not cast, milled or cut, but use a 3D printer.

Stronger than steel

Sennheiser IE 600 housing

Zirconium is an exceptionally strong and practically non-corrosive material – it is not without reason that drills for the rover were made from it. It’s hard to say to what extent the choice of zirconium ZR01 was dictated by marketing, but the durability and stability of the Sennheiser IE 600 headphones is beyond doubt.

7mm TrueResponse transducers

Sennheiser IE 600

Each TrueResponse transducer is manufactured in-house by Sennheiser. Paired with resonator chambers, the speakers, according to the company, sound “with a neutrality reminiscent of studio in-ear monitors” and allow new details to be revealed in music.

Otherwise, everything is pretty familiar – the Sennheiser IE 600 comes with cables with a 3.5mm or 4.4mm jack on standard MMCX coaxial connectors. The manufacturer did not inform about the effect of zirconium on the sound quality.

Sennheiser IE 600

The model has a typical impedance of 18ohms for in-ear headphones, and the frequency response ranges from 4Hz to 46kHz. The maximum sound pressure that IE 600 can develop is 118dB.

Availability and price

The appearance of new items on sale is scheduled for the end of spring. In Europe, the price of the Sennheiser IE 600 will be 700 euros.

Sennheiser IE 600 Specifications

  • Impedance 18 Ω system impedance
  • Transducer principle single dynamic driver, pressure chamber
  • Weight w/o cable 6g each
  • Warranty global 2-year warranty
  • Connector Fidelity (+) MMCX
  • Frequency response 4 – 46,500 Hz
  • Sound pressure level (SPL) 118 dB at 1 kHz, 1 Vrms
  • Ear coupling – Ear canal
  • Cable length 125 cm
  • Attenuation 25dB
  • Technology Unique dual-chamber absorber system
  • Housing ZR01 amorphous zirconium housings 3D printed in Germany
  • THD, total harmonic distortion <0.06% (1 kHz, 94 dB)