IE 400 Pro SBK : Really solid in-ears
With the included foam tips sound insulation is nigh on perfect, while the rubber tips let a bit more through.
Really distinct bass and great sound overall.
When it comes to comfort, if wearing them for only a few hours a day they're totally fine, but after having them in my ears +8hrs/day for multiple days the plastic starts scratching up your ear. You might have better luck with different shaped ears, but for me I have to reserve them for use on the move and use my DT990 Pros as my day-to-day monitors.
In terms of production quality I've had no issues in a little over half a year of usage.

Technical Data
- Manufactured by Sennheiser
- Released in 2019
- Average price : $379
- Weight : 18g
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