Home Review Sennheiser IE 900 high-end in-ear

Review Sennheiser IE 900 high-end in-ear



  • Sounds very controlled
  • Beautifully made
  • Ultra neutral
  • Multiple cables


  • Prefer more earplugs
  • Critical placement in ear
  • Not ours

Price: € 1299

Build Quality
Sennheiser IE 900

Measurements Sennheiser IE900


As expected, the Germans do have their technology in order. The measurements are super clean. Response is pretty straight – we’ve posted a screenshot with and without in-ear correction – and distortion is ultra-low. We see a distortion of continuously below 0.5%. In the bass end there is a small bump at 50 Hz and towards the high end it rises a bit. But as said, everything under 0.5% which is very low. There is actually no speaker that can do this. Certainly not in this price range of 1300 euros. What is striking is that the energy distribution is very neat. This gives an even sound image. Neat work by Sennheiser here.

For whom

Are you a connoisseur who likes to enjoy high-quality audio both on the go and while working? Do you want to hear what the artist wants you to experience? Then the Sennheiser IE 900 is definitely for you. Yes: 1300 euros is a serious amount. But you also get a serious product. Alpha Approved!


The Sennheiser IE 900 is a fine piece of work. And it shows once again that Sennheiser is a company that understands its trade; it is not a benchmark in the industry for nothing. The IE 900 plays neutrally, calmly, rich in detail and balanced. This in-ear is just right. Alpha Approved!
Type test
Single Test
Speaker class
Monitor - bookshelf
Speaker type
Speaker system
Bass reflex
Signal control