64 Audio U12t VS Sennheiser IE900
IEM Comparison: Expert & Community Scores Side-by-Side
64 Audio U12t and Sennheiser IE900 use 12BA and 1DD driver setups respectively. 64 Audio U12t costs $1,999 while Sennheiser IE900 costs $1,500. 64 Audio U12t is $499 more expensive. 64 Audio U12t holds a clear 0.9-point edge in reviewer scores (8.5 vs 7.6). Sennheiser IE900 has significantly better bass with a 1.6-point edge, 64 Audio U12t has significantly better mids with a 2.7-point edge, 64 Audio U12t has significantly better treble with a 1.7-point edge, 64 Audio U12t has significantly better dynamics with a 1.2-point edge, 64 Audio U12t has better soundstage with a 0.7-point edge, 64 Audio U12t has significantly better details with a 1.9-point edge and 64 Audio U12t has significantly better imaging with a 3.1-point edge.
Insights
| Metric | 64 Audio U12t | Sennheiser IE900 |
|---|---|---|
| Bass | 8.5 | 10 |
| Mids | 8.2 | 5.5 |
| Treble | 7.7 | 6 |
| Details | 8.9 | 7 |
| Soundstage | 8.2 | 7.5 |
| Imaging | 9.1 | 6 |
| Dynamics | 7.7 | 6.5 |
| Tonality | 7.9 | 6.5 |
| Technicalities | 8.6 | 6.6 |
64 Audio U12t Aggregated Review Score
Average Reviewer Scores
Sennheiser IE900 Aggregated Review Score
Average Reviewer Scores
64 Audio U12t Details
Driver Configuration: 12BA
Tuning Type: Neutral with bass boost
Brand: 64 Audio Top 64 Audio IEMs
Price (Msrp): $1,999
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Sennheiser IE900 Details
Driver Configuration: 1DD
Tuning Type: Warm V
Brand: Sennheiser Top Sennheiser IEMs
Price (Msrp): $1,500
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64 Audio U12t User Review Score
Average User Scores
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Sennheiser IE900 User Review Score
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64 Audio U12t Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
6.9Gaming 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
5.5Gaming Grade
B-64 Audio U12t Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A- Well-executed tonal character. No major flaws with good technical control. Smooth presentation works with multiple genres.
Average Technical Grade
S-- Excellent clarity and detail. Precise imaging and expansive soundstage. Manages complex passages with minimal smearing and good transient speed.
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.
64 Audio U12t Reviews
10*
* score normalized
9.1
Reviewer Score
As good as it gets. Great tuning and techs. Best set I've heard to date. Closest thing to speakers. Love it.
9
Reviewer Score
Amazing separation and presentation, amazing bass that extends down low and hits pretty authoritavely (not just in the context of BA sets - very good quantity and quality). Pretty interesting tuning with dialed down upper mids so certain instruments and voices seem more in front of you. Pretty clear sense of center image. Previously Owned
8.6
Reviewer Score
Terrific dynamic range and soundstage depth; the closest I have heard to a two-channel system in an IEM for these qualities. Precogvision Youtube Channel
8.5
Reviewer Score
TOTL tech. Mid-scoop can affect mids/vocal texture and placement, recessed midrange, treble is harsh at high volumes. Great bass detail, but could have more impact. Jays Audio Youtube Channel
8.5
Reviewer Score
Comment: Really clean sounding monitor with excellent technical aspects. Bass texture, superb clarity Can sound too sterile
7.9
Reviewer Score
Good resolution and dynamics with great imaging. Smooth, slightly recessed upper-mids with an upper treble peak.
7.8
Reviewer Score
Just Smooth and nice, great all arounder with smooth technicals, but too boring. Jaytiss Youtube Channel
7.5
Reviewer Score
Extremely versatile signature, great bass and details Potentially too safe tuning wise Tim Tuned Youtube Channel
7.5
Reviewer Score
Amazing bass (for a BA), top-tier resolution and detail-oriented signature. Crin Youtube Channel
IEMRanking AI
2025-09-11
9.4
Reviewer Score
The 64 Audio U12t is a mature flagship-class UIEM built around twelve balanced armatures per side and the company’s tia (open-BA) and apex pressure-relief tech; it lists at $1,999. Module options (mX/m15/m20) vary isolation from roughly −10 to −20 dB, giving modest control over perceived balance without changing the core tuning. The driver split—1 tia high, 1 high-mid, 6 mid, 4 low—aims for coherence via a 4-way crossover in a compact, aluminum shell.
Tonally the U12t trends neutral with a sub-bass lift, yielding clean mids and controlled, generally safe treble; frequency-response databases show the gentle low-end emphasis with even mids. Swapping apex modules can nudge the balance (e.g., M20 a bit more bass, M15 a touch airier) without altering the U12t’s fundamental character. Technical performance remains the calling card: resolution, imaging, layering, and BA-bass quality are repeatedly praised at the top of the class.
Trade-offs are mostly about preference and price: treble can read polite with minor quirks depending on chain and tips, and midrange body is slightly lean versus warmer sets. Given the premium MSRP, overall value hinges on prioritizing top-tier technicalities and long-session comfort via apex.
Sennheiser IE900 Reviews
9*
* score normalized
check links for more info:Super* Review original ranking
Super* Review Youtube Channel
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
7.1
Reviewer Score
I don't get it, not even a little. Jaytiss Youtube Channel
7
Reviewer Score
Excelllent bass - simply excellent. Midrange could use some work, as could the generally average imaging chops. Precogvision Youtube Channel
6.5
Reviewer Score
Well-resolving DD IEM with excellent treble control, though with somewhat weak mid-high harmonics. Crin Youtube Channel
64 Audio U12t User Reviews
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