Sennheiser IE900 VS Elysian Apostle

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

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Sennheiser IE900 and Elysian Apostle use 1DD and 1DD+2BA+2EST driver setups respectively. Sennheiser IE900 costs $1,500 while Elysian Apostle costs $1,799. Elysian Apostle is $299 more expensive. Elysian Apostle holds a decisive 1-point edge in reviewer scores (7.8 vs 8.8). Elysian Apostle has significantly better mids with a 3.5-point edge, Elysian Apostle has significantly better treble with a 2-point edge, Elysian Apostle has significantly better dynamics with a 1.5-point edge and Elysian Apostle has significantly better soundstage with a 1-point edge.

Insights

Metric Sennheiser IE900 Elysian Apostle
Bass 10 8.8
Mids 5.5 9
Treble 6 8
Details 7 8.8
Soundstage 7.5 8.5
Imaging 6 8.8
Dynamics 6.5 8
Tonality 6.5 8.7
Technicalities 6.6 8.7

Sennheiser IE900 Aggregated Review Score

Average Reviewer Scores

Crin
Jaytiss Precogvision
Audionotions Head-Fi.org
Super* Review

Average Reviewer Score:

7.8

Strongly Favorable

Elysian Apostle Aggregated Review Score

Average Reviewer Scores

Yifang Jays Audio Web Search
Jaytiss Gizaudio Axel Head-Fi.org

Average Reviewer Score:

8.8

Excellent

Reviews Comparison

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

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Elysian Apostle reviewed by Jaytiss

Jaytiss 9.4 Reviewer Score
A+ Tuning
A+ Tech
YouTube video thumbnail
Instrument separation is good, and is a nice darkness, but can be silbilant.
Youtube Video Summary

Elysian Apostle steps in as the spiritual successor to the beloved Diva, mirroring the Annihilator’s driver count at a lower price (~$1,800) while charting its own course. The build is full-metal, compact, gunmetal/black, and notably durable with a comfortable fit. Packaging feels premium—sturdy puck case, plentiful tips—and the two-tone red/black cable impresses with supple handling (minor microphonics, loose chin slider aside). Overall, the accessories and ergonomics are dialed in without unnecessary bling.

Sonically, Apostle is clean, clear, dark and detailed: a neutral with bass boost presentation, subtle 1 kHz energy, and a tasteful 4–6 kHz dip that keeps upper mids smooth. Compared with Annihilator 2023, there’s less upper-treble sparkle and bass quantity, trading flash for tonal correctness and long-term listenability; it simply doesn’t come across as bright. Tip depth shifts perceived treble peaks a touch, and an impedance adapter (e.g., 8 Ω) can add bass heft if desired. The net effect is a “beautiful darkness” with excellent separation, space, and crisp transients.

Against peers, Apostle reads as a next-gen Diva—retaining the charm while improving extension, detail, staging, and overall refinement. Versus Monarch (Mk II/Mk III), it takes a slightly smoother treble contour without dulling clarity. It outresolves sets like Grand Maestro SE (treble timbre quirks noted) and stands strong beside Europa (which offers more bass but fit can vary). Budget-minded listeners might find echoes of its tonality in options like AFUL P7, albeit with spikier upper treble. For those prioritizing mids, technical performance, and a refined, non-fatiguing tilt over sheer bass output, Apostle earns a full recommendation—a top-tier, deeply revealing listen that feels special from top to bottom.

Mids: S Treble: A+ Dynamics: A+ Soundstage: S-

Jaytiss original ranking

Jaytiss Youtube Channel

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Sennheiser IE900 reviewed by Head-Fi.org

Head-Fi.org 8.9 * score rescaled + normalized
10 community members have rated the Sennheiser IE900 at an average of 4.7/5 on Head-Fi. Overall sentiment: Exceptional.

URL to full Review

Head-Fi.org original ranking

Elysian Apostle reviewed by Head-Fi.org

Head-Fi.org 9 * score rescaled + normalized
4 community members have rated the Elysian Apostle at an average of 4.8/5 on Head-Fi. Overall sentiment: Exceptional.

URL to full Review

Head-Fi.org original ranking

Sennheiser IE900 (more reviews)

Sennheiser IE900 reviewed by Super* Review

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

Super* Review original ranking

Super* Review Youtube Channel

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.

Audionotions original ranking

Website (Audionotions)

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

Sennheiser IE900 reviewed by Crin

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

Sennheiser’s IE900 delivers a sub-bass–focused tuning with tight control and real tactility, but its trademark upper-mid recession (≈2–5 kHz) keeps vocals and instruments a step back. A pronounced 9–10 kHz lift adds sparkle and air; depending on tolerance, that energy can read either engaging or a touch sharp/sibilant. Technical chops are strong for a single DD—resolution and microdetail are genuinely competitive.

The sticking point is tonal balance and value. While the IE900 is refined and punchy, that blunted midrange character contrasts with its bright treble, creating a love-it-or-leave-it “blue cheese” appeal. Against peers—and especially Sennheiser’s own IE600, which fixes the mids while preserving similar resolution—the IE900’s $1,300 price starts to look tough.

In short: choose the IE900 for its clean sub-bass slam, crisp transients, and airy top if that treble profile hits the spot. If the priority is natural mids and better value without giving up much technical ability, the IE600 feels like the smarter pick—and the real redemption of Sennheiser’s IEM line.

Crin original ranking

Crin Youtube Channel

Elysian Apostle (more reviews)

Elysian Apostle reviewed by Gizaudio Axel

Gizaudio Axel 9 Reviewer Score
S Tuning
S+ Tech
YouTube video thumbnail
Exceptional in every way. Incredibly textured bass, forward vocals, top-tier EST treble, and insane detail.
Youtube Video Summary

Elysian Apostle is a tribrid 1DD + 2BA + 2EST with a four-way crossover priced around $1,800. The package is premium: leather puck case, protective pouches, cleaning tools, and multiple Divinus Velvet tip sets, plus detailed info cards. The stock 4.4 mm Pentaconn cable (mixed copper/gold-plated copper/silver) is medium-thick, supple, and quiet, while the all-metal shells with venting, a secure-lip nozzle (~6.3 mm), and excellent isolation deliver a comfortable, stable fit.

The tuning follows Elysian’s balanced, energetic house sound: bass-boosted yet controlled, vocal-focused mids, and reference-grade EST treble. Low end hits with textured slam and deep sub-bass rumble without bleed; mids are rich, natural, and forward, giving voices and instruments lifelike weight; highs are airy, crisp, and hyper-detailed with zero harshness or sibilance. Technicalities stand out—top-tier resolution, laser-precise imaging, layered separation, and a wide, deep stage that feels immersive without sounding exaggerated.

Against peers, Apostle trades the Annihilator 2023’s bigger slam and extra air for clearer vocals, finer bass texture, and larger stage, and it out-resolves the Diva 2023 while the Diva stays smoother/softer overall. Best for vocal lovers, detail seekers, EST-treble fans, and those wanting a lively but balanced presentation; less ideal for bassheads or listeners preferring darker, laid-back treble. Verdict: an exceptional all-rounder that earns a solid 5-star rating.

Gizaudio Axel original ranking

Gizaudio Axel Youtube Channel

Elysian Apostle reviewed by Yifang

Yifang 8.5 Reviewer Score
S- Tuning
A+ Tech
check links for more info:

Yifang original ranking

Yifang Youtube Channel

Elysian Apostle reviewed by Jays Audio

Jays Audio 8.5 Reviewer Score
S Tuning
S- Tech
Clean, neutral, and clear vocals. Reminds me of a cleaner Volume S or slightly better OG Oracle, but very expensive, maybe if you can find one around $1000 since it's more of a sidegrade to RSV, Mystic 8, and Arcanis vocal wise. If you want clean vocals Monarch MK2 does the same thing but for $800 less.

Jays Audio original ranking

Jays Audio Youtube Channel

Elysian Apostle reviewed by Web Search

uses AI-Search to turn user, reddit and head-fi reviews into clear, concise summaries.
Web Search 8.5 Reviewer Score
S- Tuning
S Tech

The Elysian Apostle delivers a V-shaped signature with a powerful, sub-bass-focused low end that offers substantial rumble and physicality, though some listeners might find it occasionally overwhelming or lacking in tight control. Its dual electrostatic drivers provide crisp, extended treble with good air and minimal harshness, while the midrange remains clear and natural despite slight recession, particularly excelling with vocal clarity and emotional delivery.

Comfort is mixed due to the large nozzle diameter, which demands extensive tip-rolling for a secure fit, though the lightweight aluminum shells are ergonomic for extended wear once settled. The Pentaconn ear connectors offer stability but limit third-party cable options, and the included accessories like the Divinus Velvet tips are functional but basic for the price tier.

Positioned as an "Annihilator Junior", the Apostle captures much of Elysian’s energetic house sound at a lower cost, offering strong technical performance like wide staging and solid resolution. However, its bass dominance and fit quirks make it less versatile across genres, appealing mainly to those seeking a fun, dynamic listen rather than strict neutrality.

Sennheiser IE900 User Review Score

Average User Scores

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Elysian Apostle User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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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-

Elysian Apostle Gaming Score

Gaming Score & Grade

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

Gaming Score

7.2

Gaming Grade

A-

Sennheiser IE900 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

B+
  • Expect a friendly tonal balance that could use polish but remains inviting. Great for casual listening, less so for purists.

Average Technical Grade

B+
  • An honest, middle-of-the-road performance preserves structure without chasing micro-detail. It's respectable for everyday listening sessions.
Bass S+
Expect a flagship-caliber bass presentation that defines impact, texture, and depth. Power never compromises precision.
Mids B-
Expect a competent midrange that keeps vocals grounded and instruments clear. Tone is acceptable across multiple genres.
Treble B
Highs sound lively and extended while remaining controlled. Detail retrieval keeps shimmer intact.
Dynamics B+
The performance feels robust, with satisfying punch and natural transitions. Nuances are easy to follow.
Soundstage A
The stage stretches in every direction, carving out clear three-dimensional pockets for each player. Placement accuracy impresses from the start.
Details A-
Micro-details glide to the forefront effortlessly while timbre remains natural. Ambient cues are vivid and lifelike.
Imaging B
Good imaging with precise instrument placement and clear front/back localization. Positions snap into place convincingly.
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

Elysian Apostle Scorings

Average Technical & Tuning Grades

Average Tunign Grade

S-
  • Tonal balance reaches a highly refined state, sounding seamless from lows to highs. Everything locks together with satisfying coherence.

Average Technical Grade

S-
  • The presentation is crisp and expansive, handling complex passages with impressive ease. Low-level details remain audible in quiet passages.
Mids S
Expect a benchmark mid band that blends flawless accuracy with captivating presence. Vocals float in a perfectly defined space.
Treble A+
The treble performance feels luxurious, marrying air, control, and excitement. You can place every high-frequency element.
Dynamics A+
Expect thrilling dynamics that move effortlessly from whispers to roars. Explosive moments sound thrilling.
Soundstage S-
Exceptional soundstage with holographic imaging that lets instruments float naturally around you. It paints a holographic bubble around you.
Gaming A-
Good fundamental spatial awareness for most gaming scenarios. Handles basic positioning well but may lack nuance in complex situations. Bad value-to-cost for gaming purpose - not recommended

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