7Hz Timeless 2 VS NF Acous NM25
IEM Comparison: Expert & Community Scores Side-by-Side
7Hz Timeless 2 and NF Acous NM25 use 1Planar and 1DD driver setups respectively. 7Hz Timeless 2 costs $229 while NF Acous NM25 costs $199. 7Hz Timeless 2 is $30 more expensive. 7Hz Timeless 2 holds a clear 0.5-point edge in reviewer scores (7.7 vs 7.2). 7Hz Timeless 2 has significantly better bass with a 1.1-point edge, 7Hz Timeless 2 has slightly better dynamics with a 0.3-point edge, NF Acous NM25 has slightly better soundstage with a 0.4-point edge, 7Hz Timeless 2 has slightly better details with a 0.4-point edge and 7Hz Timeless 2 has better imaging with a 0.5-point edge.
Insights
| Metric | 7Hz Timeless 2 | NF Acous NM25 |
|---|---|---|
| Bass | 8.1 | 7 |
| Mids | 7.7 | 7.7 |
| Treble | 7.5 | 7.5 |
| Details | 8.4 | 8 |
| Soundstage | 7.4 | 7.8 |
| Imaging | 8.3 | 7.8 |
| Dynamics | 7.3 | 7 |
| Tonality | 7.3 | 7.4 |
| Technicalities | 7.8 | 7.9 |
7Hz Timeless 2 Aggregated Review Score
IEMR Normalized Score
IEMR Normalized Score
7.7Strongly Favorable
Reviewer Average Score
7.5Strongly Favorable
NF Acous NM25 Aggregated Review Score
IEMR Normalized Score
IEMR Normalized Score
7.2Generally Favorable
Reviewer Average Score
7.7Strongly Favorable
Reviews Comparison
7Hz Timeless 2 reviewed by Paul Wasabii
7.7
* Score computed by IEMRanking.com
Youtube Video Summary
Timeless II modernizes the original’s high-detail character into a more approachable package. The headline is four tuning nozzles (Gold Flower, Silver Flower, Gold Bullet, Silver Bullet) that meaningfully shift presence/upper mids and treble, letting listeners choose between a relaxed, natural profile and a forward, planar-typical clarity. Build quality, modular cable and accessories are polished, fit is comfortable, and the overall aim is to give newcomers an easy entry into planar detail without the harsher edges.
With the Silver Bullet, vocals move forward with crisp articulation and strong resolve; the bass shelf sits near Timeless AE levels with clean definition, while treble is consciously smoothed to reduce planar sharpness and sibilance. The Flower filters sound more relaxed and dynamic-driver-like but give up some nuance and air. Out of the box it is not as perfectly balanced as the S12 2024 reference, yet the nozzle/foam system provides real tuning flexibility: small foam changes can restore upper-treble air and add stage height, making Timeless II a versatile, top-tier option at its price.
Paul Wasabii Youtube Channel
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NF Acous NM25 reviewed by Paul Wasabii
7.8
* Score computed by IEMRanking.com
Youtube Video Summary
The NF Acoustics NM25 continues the professional series with a lightweight full metal shell and a tuning aimed squarely at monitoring and stage performance. It is a neutral bright, vocal focused in ear monitor around 200 dollars that prioritises midrange clarity and low listening fatigue for singers and musicians. The patented Clutter Trap system is described as reducing high frequency noise and reflections, yielding an upper treble response that stays very clean and solid even when driven hard.
Sound wise, the NM25 is framed as a lower volume, vocal forward resolve detail beast for a dynamic driver, with extension and air that now feel cleaner, more present and more audible than earlier models from the brand. Bass sits slightly below neutral as a very clean foundation with a modest shelf that keeps the signature firmly in true neutral bright territory, while the midrange offers highly resolving vocals and the refined upper treble matches that level of resolution. For listeners who need a professional monitor that also works for casual listening, the NM25 delivers a highly technical yet controlled presentation, with strong detail retrieval and stability in the upper registers rather than exaggerated warmth or bass weight.
Paul Wasabii Youtube Channel
7Hz Timeless 2 reviewed by Web Search
8.1
Reviewer Score
The 7Hz Timeless II updates its predecessor with a 14.5mm planar magnetic driver featuring a dual-sided silver alloy diaphragm and N52 magnets, offering improved responsiveness and reduced "planar timbre" compared to the original . Its standout feature is the four interchangeable nozzles, allowing tonal adjustments—though the bullet-shaped variants suffer from condensation issues and noticeably reduce treble clarity . Comfort is decent for medium-to-large ears, but the aluminum shells may challenge smaller anatomies, and isolation remains average despite a secure fit .
Tonally, the Timeless II leans neutral with a sub-bass lift, delivering fast, textured lows that avoid bleeding into the mids . Midrange clarity is strong but can edge into harshness with upper-mid-forward tracks, while treble extends well without excessive sibilance . Technically, it excels in imaging precision and soundstage width, though depth and height feel constrained next to hybrids like the Simgot ET142 .
NF Acous NM25 reviewed by Web Search
7.5
Reviewer Score
The NF Acous NM25 is a full-metal stage monitor built from a single block of aviation-grade aluminium, housing the MC2L-100A single dynamic driver in a dual-magnetic, dual-chamber design. Its shell is compact yet solid, paired with a light 0.78 mm 2-pin silver-coated OFC cable terminated in 3.5 mm, but it omits modular or balanced terminations that some competitors offer around its $199 price point. Sensitivity and impedance (around 108 dB/mW, 32 Ω) make it easy to drive from portable sources while maintaining a monitor-focused, professional positioning.
Sonically, the NM25 leans toward a neutral-bright and analytical tuning, prioritising clarity and speed over warmth or weight. Bass is tight and fast with good sub-bass reach, but mid-bass remains relatively lean, so impact is restrained even though texture and control are strong. The mids are clean and slightly forward, giving vocals and instruments precise articulation, while the upper mids and lower treble are elevated enough to add air and definition but can expose sibilance or become fatiguing with poor or aggressive recordings.
Technical performance is a key strength: the NM25 offers high resolution, strong microdetail retrieval and a wide, open soundstage with precise imaging and separation that stand out in the sub-$200 bracket. This monitor-style presentation works especially well for acoustic, vocal and electronic material where timing, layering and clarity are more important than sheer bass quantity, but it is less forgiving of compressed or bright masters. Considering its focused, studio-oriented tuning and strong technicalities at an MSRP of around $199, the NM25 represents good value for listeners seeking a bright, analytical single-DD monitor rather than a universally “fun” all-rounder.
7Hz Timeless 2 (more reviews)
7Hz Timeless 2 reviewed by Joyce's Review
9
Reviewer Score
Youtube Video Summary
The 7Hz Timeless 2 delivers a classic V shaped tuning that feels very mature, with bass, mids and treble kept in convincing balance. Low frequencies have strong sub bass and mid bass presence with good depth, yet remain tight and well separated, so kick drums and bass lines hit hard without masking the rest of the mix. The midrange sounds detailed and comfortable with slightly recessed lower mids, rich textured male vocals and instruments that are clearly outlined, favoring clarity over warmth while still avoiding a thin or shouty presentation.
The treble comes across as natural and bright, adding a good sense of clarity and air without obvious harsh peaks, and remains comfortable even during longer listening sessions. Extension into the upper treble is solid and transient response on cymbals and strings is crisp, giving a clean sense of attack and decay, although the very top end can sound a little dry and slightly reduced in body for some tracks. Technical performance is a major strength, with a super wide soundstage, clear air between instruments and strong separation that make positional cues easy to follow.
In direct comparison with sets such as the S12 2024 edition and the MP145, Timeless 2 offers cleaner bass control, higher detail retrieval and more precise layering, which helps justify its higher price. The total harmonic balance feels very pleasant and natural, giving music a sense of accuracy that still remains engaging rather than analytical, and there are few real weaknesses beyond the slightly dry outer treble region. Taken together, this combination of balanced tuning, strong technical ability and wide stage supports a confident four and a half out of five star style verdict for listeners seeking a refined planar IEM in this range.
Joyce's Review original ranking
Joyce's Review Youtube Channel7Hz Timeless 2 reviewed by Z-Reviews
8.5
* score rescaled + normalized
Youtube Video Summary
Timeless 2 shows up with a bigger, round shell (carbon-fiber face, metal rim), a nice hard case, and an oddball-but-cool ribbon cable on MMCX that feels a bit stiff. The real headline is the swappable nozzles: tiny side-vent “pin” nozzles (stock), a “flower” top-vent nozzle, and a large side-vent set. Tip pack is a colorful grab bag (no foams), and care is needed because narrow bores can block those side vents. Power isn’t a problem—this set is very efficient and plays happily from a phone or desktop amps without turning harsh.
Sonically, the three nozzles behave like three different tunings. The stock tiny side-vents are wide, chill, and distant—easy listening with big space. Swap to the “flower” top-vent and everything snaps into focus: detail rockets up, staging comes closer, and transients clean up without tipping into sibilance; bass also tightens and gains punch. The big side-vent option brings more bass weight and a huge stage, trading a bit of hyper-detail for scale and fun. Tip rolling matters: wide-bore silicone (e.g., Dunu SS) or high-seal foams can make it a party in the head, while tight-bore foams can choke the vents and thin the sound.
With the right nozzle/tip combo, Timeless 2 goes from “good planar” to aggressively engaging: thunderous taiko hits, breathing and string texture on acoustic tracks, and club-ready energy on electronic. It feels like the most complete planar IEM here—big soundstage, real bass presence, and crisp clarity that invites louder listening. If pricing sits around the speculated $260–$320 range, this could muscle aside a lot of sets under $500–$600. Verdict: a bold, successful experiment that delivers three flavors of planar goodness, with the “flower” nozzle as the standout for clarity + slam.
Z-Reviews Youtube Channel
7Hz Timeless 2 reviewed by Jaytiss
7.3
Reviewer Score
Jaytiss Youtube Channel
7Hz Timeless 2 reviewed by Jays Audio
7
Reviewer Score
Youtube Video Summary
7Hz Timeless 2 arrives as a polished successor to the original, delivering a smoother, more refined treble and a presentation that feels less “planar” in timbre. Its headline feature is the interchangeable nozzle system that meaningfully changes the sound—three distinct tunings rather than subtle tweaks—so fit and flavor are easier to dial in. Technicals remain solid for the class (layering, separation, staging), but the emphasis shifts from raw edge to easy, airy listenability; compared to brighter, snappier planars, this one trades a touch of bite for balance and comfort. Pairing with regular Sedna-style tips further smooths the top end without dulling it.
Midrange is handled with a calmer 2 kHz region, so vocals sound less forward and less shouty on energetic tracks. The silver nozzle tames that zone even more, appealing to listeners who prefer flatter upper-mids while adding a sense of openness and clarity. Bass is punchy, quick, and clean with good impact that avoids bleed; it won’t out-slam a strong dynamic-driver set, but the planar low-end here feels tight and versatile, fitting an all-rounder profile. If ultra-etched detail and hyper-tactile treble are the goal, some rivals push further; if the priority is smoothness without boredom, Timeless 2 hits the brief.
As a value play, sub-$100 options still undercut it, yet the combination of refinement + three nozzles makes Timeless 2 competitive at its price. Owners of recent planars may find it a side-grade in sheer technicals, but for anyone starting fresh—or seeking a safer, fuller tuning that scales reasonably—this is a confident recommendation. Use the smoothing tips and select the nozzle that fits the library, and it becomes a comfortable daily driver for most listeners.
Jays Audio Youtube Channel
7Hz Timeless 2 reviewed by Tim Tuned
6.5
Reviewer Score
7Hz Timeless 2 reviewed by Gizaudio Axel
6
Reviewer Score
Gizaudio Axel original ranking
Gizaudio Axel Youtube Channel7Hz Timeless 2 Details
Driver Configuration: 1Planar
Tuning Type: Neutral with Bass Boost
Brand: 7Hz Top 7Hz IEMs
Price (Msrp): $229
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NF Acous NM25 Details
Driver Configuration: 1DD
Tuning Type: Neutral, Bright
Price (Msrp): $199
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7Hz Timeless 2 User Review Score
Average User Scores
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NF Acous NM25 User Review Score
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7Hz Timeless 2 Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
7.7Gaming Grade
ANF Acous NM25 Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
7.7Gaming Grade
A7Hz Timeless 2 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A-- A smooth, agreeable balance keeps the presentation engaging without obvious flaws. Only sensitive ears will nitpick the bumps.
Average Technical Grade
A- Overall technical control is strong, presenting instruments with clarity and sensible staging. Textures are portrayed with satisfying clarity.
NF Acous NM25 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A-- It balances warmth and clarity well, showing only minor quirks along the way. Timbre feels believable with most instruments.
Average Technical Grade
A- You get a well-rounded technical package that keeps separation, detail, and staging in harmony. It's a solid middle ground between fun and fidelity.
7Hz Timeless 2 User Reviews
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