What is SENNHEISER IE 400 PRO?
The "IE400 PRO" is a professional in-ear monitor designed with precise acoustic engineering to allow musicians to distinguish subtle nuances of sound on stage. Equipped with a proprietary dynamic driver, it delivers warm, natural bass and faithfully reproduces the original sound. This ensures accurate sound delivery to musicians performing amidst high volumes.
Features
Ultra-High-Precision Dynamic Driver
「IE 400 The IE 400 PRO employs a uniquely designed dynamic driver unit. The IE 400 PRO is a high-frequency driver unit with a unique dynamic design that delivers a well-balanced sound in all bands, from warm and rich low frequencies to natural and smooth mid and high frequencies, and outputs every single sound accurately.

Excellent Sound Insulation Performance, Comfortable Fit
Includes silicone ear tips and memory foam ear tips. These ear tips can be selected according to the user's preferred fit and application, making them comfortable even when worn for long periods of time and high sound insulation performance that is unaffected by ambient sound.

Enclosure with excellent stiffness and wearability
The adjustable headband is made of steel that has excellent flexibility. Ear cups (housing section) are made of machined lightweight aluminum and high-quality parts. The headband is foldable for easy carrying.
Two detachable cables (one straight, one curly cord) and a 6.3mm (1/4") adapter are also included.
