Tangzu HBB Xuan NV and 7Hz Elua Ultra are 2DD in-ear monitors. Tangzu HBB Xuan NV costs $79 while 7Hz Elua Ultra costs $30. Tangzu HBB Xuan NV is $49 more expensive. 7Hz Elua Ultra holds a clear 0.8-point edge in reviewer scores (5.9 vs 6.7). 7Hz Elua Ultra has better mids with a 0.5-point edge, Tangzu HBB Xuan NV has slightly better treble with a 0.3-point edge, 7Hz Elua Ultra has significantly better dynamics with a 2-point edge and 7Hz Elua Ultra has better soundstage with a 0.5-point edge.
Insights
Metric | Tangzu HBB Xuan NV | 7Hz Elua Ultra |
---|---|---|
Bass | 5.5 | 6.7 |
Mids | 5.5 | 6 |
Treble | 5.3 | 5 |
Details | 5.5 | 6.7 |
Soundstage | 5.8 | 6.2 |
Imaging | 6 | 6.7 |
Dynamics | 5 | 7 |
Tonality | 6.1 | 6.3 |
Technicalities | 5.4 | 5.6 |
Tangzu HBB Xuan NV Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
5.9Mixed
7Hz Elua Ultra Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
6.7Cautiously Favorable
Reviews Comparison
Tangzu HBB Xuan NV reviewed by Jaytiss
Jaytiss Youtube Channel
7Hz Elua Ultra reviewed by Jaytiss
2025-08-19Compact and comfortable, the 7Hz Elua Ultra brings a tidy dual dynamic driver package for around $30. The rounded shell uses a pretty metal faceplate, sits light in the ear, and isolates better than the 7Hz Zero/Zero 2. Details: flat 2-pin connectors, proper venting, two colorways, and a nozzle that grips tips well. The stock cable is fine for the price—right-angled 3.5 mm, 7Hz branding—but the Y-split wanders and there are no clear L/R markers. A handful of colorful tips is included; nothing fancy, but serviceable.
Sonically, this is a bassy, engaging tune with glidey, impactful low end, upper mids that are present without shout, and treble that’s acceptable yet a bit grainy with limited air and microdetail. The midrange can read a touch lean depending on normalization, giving a mild V/U flavor; still, the overall tonality feels fun and easy to enjoy. Compared against peers, it’s cleaner and less hissy than very V-shaped sets like the G1, shows more bass and upper mids than 7Hz Zero 2, yet can’t match higher-tier options (e.g., Punch Audio Martillo) for technical performance. Verdict: a solid B—good value and a worthwhile pick for listeners wanting a budget bass emphasis, even if the “twinkle” and ultimate resolution are a step behind pricier favorites.
Jaytiss Youtube Channel
Tangzu HBB Xuan NV (more reviews)
Tangzu HBB Xuan NV reviewed by Jays Audio
Jays Audio Youtube Channel
Tangzu HBB Xuan NV reviewed by Shuwa-T
Tangzu HBB Xuan NV reviewed by
Fresh Reviews
7Hz Elua Ultra (more reviews)
7Hz Elua Ultra reviewed by IEMRanking AI
2025-08-22
The 7Hz Elua Ultra delivers a powerful and well-defined bass that extends deep without overwhelming the mids, making it stand out in its price range. Vocals are clear and detailed, with a natural presentation that works especially well for female voices, and there's minimal bass bleed into the midrange . The IEM requires a lengthy burn-in period for the drivers to fully stabilize and achieve coherence between the bass and treble.
Treble performance is detailed and expansive, offering good airiness without causing fatigue, though it can lean slightly analytical rather than musical. The accessories are quite basic, including a standard OCC copper cable and a few ear tips, which feels lacking even at this price point . Despite its low impedance, the Elua Ultra benefits from better amplification to overcome its lower sensitivity and unlock its full potential.
Overall, the Elua Ultra punches above its weight with a balanced and speaker-like sound that competes with more expensive models. Its ergonomic, lightweight design ensures comfort for long sessions, but the minimalist unboxing experience is a notable drawback . This IEM is a strong choice for those seeking a fun yet technically competent listen without breaking the bank.
Tangzu HBB Xuan NV Details
Driver Configuration: 2DD
Tuning Type: n/a
Brand: TangZu Top TangZu IEMs
Price (Msrp): $79
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7Hz Elua Ultra Details
Driver Configuration: 2DD
Tuning Type: Harman Target
Brand: 7Hz Top 7Hz IEMs
Price (Msrp): $30
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Tangzu HBB Xuan NV User Review Score
Average User Scores
Average User Score: n/a
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7Hz Elua Ultra User Review Score
Average User Scores
Average User Score: n/a
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Tangzu HBB Xuan NV Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
5.6Gaming Grade
B-7Hz Elua Ultra Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
5.8Gaming Grade
B-Tangzu HBB Xuan NV 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
C+- Satisfactory technical performance. Handles basic detail retrieval adequately in most tracks. Maintains reasonable cohesion in simpler arrangements.
7Hz Elua Ultra 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.
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