Sony IER-M9 VS Sennheiser IE900

IEM Comparison: Expert & Community Scores Side-by-Side

Home Ranking Penon Fan 3s Compare IEMs
My Ranking My Favorites

Sony IER-M9 and Sennheiser IE900 use 5BA and 1DD driver setups respectively. Sony IER-M9 costs $1,000 while Sennheiser IE900 costs $1,500. Sennheiser IE900 is $500 more expensive. Sennheiser IE900 holds a slight 0.4-point edge in reviewer scores (7.2 vs 7.6). Sony IER-M9 carries a user score of 7.5. Sennheiser IE900 has significantly better bass with a 2.5-point edge, Sony IER-M9 has significantly better mids with a 2.5-point edge, Sony IER-M9 has significantly better treble with a 1.5-point edge, Sennheiser IE900 has significantly better dynamics with a 1.5-point edge, Sony IER-M9 has significantly better details with a 1-point edge and Sony IER-M9 has significantly better imaging with a 1-point edge.

Insights

Metric Sony IER-M9 Sennheiser IE900
Bass 7.5 10
Mids 8 5.5
Treble 7.5 6
Details 8 7
Soundstage 7.2 7.5
Imaging 7 6
Dynamics 5 6.5
Tonality 7.1 6.5
Technicalities 7.4 6.6

Sony IER-M9 Aggregated Review Score

Average Reviewer Scores

Audionotions Precogvision Tim Tuned Crin

Average Reviewer Score:

7.2

Generally Favorable

Sennheiser IE900 Aggregated Review Score

Average Reviewer Scores

Crin
Jaytiss Precogvision
Audionotions
Super* Review

Average Reviewer Score:

7.6

Strongly Favorable

Reviews Comparison

Sony IER-M9 reviewed by Audionotions

Audionotions 7.5 Reviewer Score
Nice note weight, very balanced, shockingly good at imaging held back by finicky fit and vacuum seal - fit issues can be resolved by changing tips though (for me the stock silicone LL tips eliminated fit issues for me but YMMV). At used prices today, it's a steal. Previously Owned

Audionotions original ranking

Website (Audionotions)

Sennheiser IE900 reviewed by Audionotions

Audionotions 8.5 Reviewer Score
I usually don't like things that aren't all rounders but this might be the exception. Bass is incredible - best in class - great texture, fantastic physicality. Treble response is great too - pretty resolving. There is a noticeable recession in the upper mids, giving these a fairly U/V shaped sound signature - violins, for example, lack a bit of brightness/bite that I would hope for. But unlike other V-shaped IEMs, the mids aren't offensive. Incredibly fun to listen to. Probably the best single DD available. EQ highly recommended. Previously Owned

Audionotions original ranking

Website (Audionotions)

Sony IER-M9 reviewed by Precogvision

Precogvision 7.4 Reviewer Score
A- Tuning
B+ Tech
Boring, but you won't find anything more well-rounded for the price. Exceptional timbre for a BA IEM.

Precogvision original ranking

Precogvision Youtube Channel
Bass: A- Mids: A+ Treble: A- Dynamics: C+ Details: A+ Imaging: A-

Sennheiser IE900 reviewed by Precogvision

Precogvision 7 Reviewer Score
A- Tuning
B+ Tech
Excelllent bass - simply excellent. Midrange could use some work, as could the generally average imaging chops.

Precogvision original ranking

Precogvision Youtube Channel
Bass: S+ Mids: C+ Treble: A- Dynamics: A- Details: A- Imaging: B

Sony IER-M9 reviewed by Crin

Crin 7 Reviewer Score
A- Tuning
A Tech
Neutral tonality, highly coherent and decent detail pickup. The all-rounder of the IER lineup.

Crin original ranking

Crin Youtube Channel

Sennheiser IE900 reviewed by Crin

Crin 6.5 Reviewer Score
B Tuning
A+ Tech
Well-resolving DD IEM with excellent treble control, though with somewhat weak mid-high harmonics.

Crin original ranking

Crin Youtube Channel
YouTube video thumbnail

Sony IER-M9 (more reviews)

Sony IER-M9 reviewed by Tim Tuned

Tim Tuned 7 Reviewer Score
A- Tuning
A+ Tech
Just great accross the board, nothing to fault Not very special

Tim Tuned original ranking

Tim Tuned Youtube Channel
Bass: A+ Mids: A+ Treble: A+

Sennheiser IE900 (more reviews)

Sennheiser IE900 reviewed by Super* Review

Super* Review 9* * score normalized
check links for more info:

Super* Review original ranking

Super* Review Youtube Channel

Sennheiser IE900 reviewed by Jaytiss

Jaytiss 7.1 Reviewer Score
B Tuning
C+ Tech
I don't get it, not even a little.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: B Treble: C+ Dynamics: B Soundstage: A

Sony IER-M9 User Review Score

Average User Scores

Average User Score:

Based on 1 user reviews

7.5

Strongly Favorable

Sennheiser IE900 User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

No user reviews yet. Be the first one who writes a review!

Sony IER-M9 Gaming Score

Gaming Score & Grade

  • The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.

Gaming Score

6.3

Gaming Grade

B

Sennheiser IE900 Gaming Score

Gaming Score & Grade

  • The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.

Gaming Score

5.5

Gaming Grade

B-

Sony IER-M9 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A-
  • Pleasing tonal balance with good technical control. Minor quirks present but not distracting. Demonstrates decent genre versatility.

Average Technical Grade

A-
  • Competent technical presentation. Handles separation and detail well in most tracks, with modest soundstage and acceptable imaging capabilities.
Bass A
Strong, well-defined bass with good texture. Delivers satisfying punch and rumble without overwhelming other frequencies.
Mids A+
Superb midrange that's rich and resolving. Exceptional transparency and micro-details with perfect vocal/instrument balance.
Treble A
Excellent treble: airy, extended and well-controlled. Great micro-detail retrieval without sibilance or harshness.
Dynamics C+
Decent dynamic performance. Good macro-contrast but micro-dynamics could be more nuanced. Satisfactory impact.
Details A+
Exceptional resolution that uncovers the deepest layers. Retrieves even the most minute details while maintaining natural timbre.
Imaging A-
Excellent imaging: precise and stable placement. Instruments occupy specific points in space with tangible positions.
Gaming B
Decent spatial awareness for fundamental positioning. Creates satisfying atmosphere in story-driven games while handling basic directional cues. Bad value-to-cost for gaming purpose - not recommended

Sennheiser IE900 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

B+
  • Generally enjoyable tonal character with some noticeable unevenness. Maintains listenability while showing room for refinement in frequency balance.

Average Technical Grade

B+
  • Satisfactory technical performance. Handles basic detail retrieval adequately in most tracks. Maintains reasonable cohesion in simpler arrangements.
Bass S+
World-class bass performance. Perfectly balanced between visceral impact, texture, and depth with zero bleed into mids.
Mids B-
Decent midrange performance - balanced but unremarkable. Adequate clarity for most genres without notable flaws.
Treble B
Good treble response - clear and detailed without fatigue. Well-extended with proper air and sparkle.
Dynamics B+
Good dynamic expression with solid impact. Handles volume contrasts well while maintaining good transient snap.
Soundstage A
Excellent spatial presentation - wide, deep and tall. Precise instrument placement with clear separation in all dimensions.
Details A-
Excellent detail retrieval: highly resolving without being clinical. Effortlessly reveals micro-details and textural subtleties.
Imaging B
Good imaging with precise instrument placement. Clear localization within the soundstage including front/back positioning.
Gaming B-
Moderate spatial presentation conveys general directionality. Suitable for casual play where precision isn't critical. Bad value-to-cost for gaming purpose - not recommended

Sony IER-M9 User Reviews

Share your experience and build your personal ranking list.

You need to be signed in to write your own review
Makavelian
7.5

Worth it at used prices for neutral warm all rounder.

Pros
Great all rounder tuning, imaging, comfort.
Cons
Bit lacking in engagement, bass typical of BA drivers.

Sennheiser IE900 User Reviews

Example User Posted on ...
0.0

"This is an example review"

Pros
  • Example pro 1
  • Example pro 2
Cons
  • Example con 1
  • Example con 2
No User-Reviews Yet

Share your experience and build your personal ranking list.

You need to be signed in to write your own review

Find your next IEM:

IEM Finder Quiz

new
Use this quiz and answer a few questions to get your individual IEM recommendation list
(1/2) How much are you willing to spend on the IEM?
(2/2) Which sound characteristics are particularly important to you?

Recommended Pages

Page
Available IEMs (in stock)
Best IEMs under $50
Best IEMs under $100
Best IEMs under $200
Best IEMs under $600
Best IEMs under $1000
Best bass quality IEMs
Best dynamic range IEMs
IEMs with widest soundstage
IEMs with most details
IEMs with best imaging
Best value IEMs from below $50
Best value IEMs from $50 - $100
Best value IEMs from $100 - $200
Best value IEMs from $200 - $400
Best value IEMs from $400 - $600
Best value IEMs from $600 - $1,000
Buy

Footer