From the official site:
Assertive in-ear monitors with extremely high resolution and distortion-free sound reproduction, even at maximum sound pressure levels. The miniature 7mm driver uses the new TrueResponse technology and delivers a superb distortion factor of only 0.08%. The highly compact and ergonomic design sits securely and comfortably in every ear canal.
Looking for highest resolution, distortion-free sound with graduated tonal depths – even at maximum sound pressure levels? The IE 500 PRO is the right choice.
- Newly developed, dynamic 7mm wideband transducer with extremely fine resolution and neutral sound
- Detachable twisted pair cable for excellent resistance against structure-born noise
- TrueResponse driver system reduces acoustic stress factors through homogeneous and low-distortion reproduction
- High level of wearing comfort and good fit thanks to ergonomic, compact housing
- Excellent shielding through optimized earpiece shape and flexible silicone and foam tips
- Cable concept fit for the stage with innovative cable duct (patent application in progress)
Top of the E series line-up. Dynamic Driver in Stainless steel housing with MMCX connectors.
final E4000, dynamic driver in aluminium housing with MMCX connectors
Sennheiser IE 40 Pro
IE 40 Pro : Sennheiser's professional monitoring in-ear line
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