Design and model identity
Zinc-alloy housing; titanium dome and composite surround.
EarAcoustic Audio SPA-Hi End Ultra
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Product information
At a glance
Bass emphasisTimbre: Bright toneListening: Rhythm and impact
A candidate for listeners seeking bass weight and impact, a bright, open tone and rhythmic, energetic listening.
Technical / Musical 86 / 90Retained editorial scores7 Source recordsSignature evidence · MediumPrice record date · 2026-10-10Evidence for the catalogue reference
Scores are retained editorial reference values, not laboratory measurements or arithmetic averages of review stars. A one-point difference does not establish absolute superiority. Signature confidence is separate from score certainty.
Read the scores and evidence ↗Core product facts
- Release month
- 2025-02
- Driver configuration
- 1DD 11.4mm Titanium Gold
- Impedance
- 26Ω
- Earpiece connector
- 0.78mm 2-pin
- Cable length
- 1.2m
- Catalogue reference · KRW
- ₩377,900USD 261.56
- Emphasis · timbre
- Bass emphasis · Timbre: Bright tone
A recorded reference amount, not a live lowest price.
Basic specifications
Specifications retained from product records; missing values are not estimated. Korean source wording is preserved where no verified translation exists.
| Driver configuration | 1DD 11.4mm Titanium Gold |
|---|---|
| Impedance | 26Ω |
| Sensitivity | 110 dB stated; reference unspecified |
| Weight and scope | No established value in the checked records. Value not established · checked source ↗ · itohya.jp |
| Nozzle diameter | No established value in the checked records. Value not established · checked source ↗ · itohya.jp |
| Included accessories |
|
| Cable conductor / material | Silver-plated OFC Litz |
| Cable cores / braid | No established value in the checked records. Value not established · checked source ↗ · itohya.jp |
| Cable length | 1.2m |
| Earpiece connector | 0.78mm 2-pin |
| Source plug | No established value in the checked records. Value not established · checked source ↗ · itohya.jp |
Retained product source ↗ · itohya.jp · Specification evidence · Research coverage
Package/cable records below retain the original source language. Purchase options, modular plugs and aftermarket accessories are distinguished; unverified counts and materials are not estimated.
SPA-Hi End 시리즈 공통 구성품 항목 기준; STA-Hi End MAX와 혼동하지 않음.
EarAcoustic Audio SPA-Hi End Ultra 기존 제품 자료 ↗ · itohya.jpItohya SPA-Hi End Ultra 일본 공식 유통 ↗ · itohya.jpPrice and release evidence
A recorded reference for catalogue sorting and filters, not a current checkout price.
Catalogue reference · KRW
Historical source for the KRW reference not secured
₩377,900
Retained USD reference. The current regular AliExpress price for the same option has not been verified.
Reference conversion: US$261.56 × ₩1444.79/USD → ₩377,900 · 2025-02 monthly rate
The original product-price URL was not retained for this reference amount. A general product page or an exchange-rate page is not proof of that exact selling price.
Exchange-rate data only ↗ · fred.stlouisfed.org
Pricing record date: 2026-10-10
This is the registered reference price, not a live lowest-price quote. Option, shipping, tax, coupons and exchange-rate rounding may differ.
Driver and design evidence
1DD 11.4mm Titanium Gold
Recorded model / design notes (original language): 정식 유통사 기준 아연 합금 셸, 티타늄 돔과 크리스털 실리콘 에지 복합 진동판의 듀얼 마그넷·듀얼 캐비티 설계입니다.
Product specifications / model-specific reference ↗ · itohya.jp
Additional product reference: 이어어쿠스틱 SPA-HIEND ULTRA 개봉기 · blog.naver.com
Linked references are the existing model-specific specification/design records. Manufacturer, retailer and review sources are distinguished in the original pages. Driver counts alone do not establish sound quality; model generations and variants must match.
Zinc-alloy housing; titanium dome and composite surround.
The owner identifies SPA-Hi End Ultra as bright overall, with weighty bass and luminous highs. The primary category is corrected to bright tone; bass-led and more restrained-treble reviews remain contrary accounts. This is the 11.4mm single…
Representative character: Rhythm and impact
2ann quick note
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Sound, assessment & measurements
Technical evaluation 86 / 100
Bass87
Mids88
Treble86
Spatial presentation85
Evidence behind the technical assessment
Treble presentation: Bright and airy in some reviews, restrained in the new owner review. ↗
Stage and separation: Average to wide; clarity and layering are more consistent than scale. ↗
Read sources and disagreements ↗Musical enjoyment 90 / 100
Natural timbre94
Emotional expression91
Immersion90
Rhythm and dynamics88
Vocal and instrumental liveliness91
Long-session comfort92
Evidence behind musical enjoyment
Bass character: Often weighty and punchy; some hear more moderate quantity. ↗
Vocals and mids: Close, full vocals in some reports, recessed or leaner in others. ↗
Read sources and disagreements ↗Sound and listening impressions
Design, bass, mids, treble, stage and differing reviewer impressions are presented together.
Sound classification
Representative listening character
Weight, impact and rhythmic energy are the main listening attractions. This editorial browsing category is drawn from retained model-specific reviews; it does not exclude other listening uses.
Similar listening character ↗Differences by listening conditions: Existing Moonstar and Canuck accounts hear clear or bright highs, while Mobile01 hears balance. Creator descriptions do not add an independent detailed listener; exclude Pro Ultra.
Concise English summaries distinguish product specifications, reviewed listening impressions and practical advice. Original source notes remain available below.
Bass quantity and texture
Often weighty and punchy; some hear more moderate quantity.
Vocal placement and midrange
Close, full vocals in some reports, recessed or leaner in others.
Treble and fatigue
Bright and airy in some reviews, restrained in the new owner review.
Stage, separation and imaging
Average to wide; clarity and layering are more consistent than scale.
Disagreement and listening conditions
The bass, vocal and treble descriptions summarise reviewed impressions, not measured quality. Tips, volume, nozzle settings and source conditions can explain differences. Sample relationships and duplicate authors remain disclosed in the source records.
Strengths and caveats from reviewed sources
Supplementary notes retain the original Korean research wording.
이어어쿠스틱 SPA-HIEND ULTRA 개봉기 ↗ — 정확히 Ultra. Azla Sedna Light Short 팁에서 묵직한 저음의 울림·잔향, 시원하고 청명한 음색과 약간의 채색, 넓어진 공간을 평가. 쉘 재질로 소리를 설명하는 추론은 채택하지 않음.
Listening suggestions and selection points
Start with rhythm-driven electronic music, hip-hop or rock. Compare the satisfaction of kick and bass impact with how much room remains for voices as bass notes overlap.
These are editorial starting points derived from the existing sound descriptions, not results of a genre-by-genre test. Recordings and arrangements vary even within one genre.
How to choose this product
Preferences that match
- bass weight and impact · a bright, open tone
- rhythmic, energetic listening
Consider alternatives first if you prefer
- lean, restrained bass ahead of weight
- a thicker, more subdued tone ahead of brightness
A preference guide based on the existing classification. Fit and enjoyment vary with listener, music and tips.
Products to compare
Candidates selected by classification and proximity of registered reference prices, not direct A/B auditions or performance rankings.
Fit and connection checks
Information retained from registered sources. Where verified wearing photos or individual fitting observations are unavailable, consult the product photo and the specification scope.
Listening checklist
- Compare vocal masking at matched volume.
- Use familiar music to separate bass quantity from decay.
- Check treble comfort after matching tips and seal.
Cable, plugs and drive
- Earpiece connector: 0.78mm 2-pin
- Source plug: No established value in the checked records. Value not established · checked source ↗
- Cable length: 1.2m
- Impedance: 26Ω
- Sensitivity: 110 dB stated; reference unspecified
Included accessories
- Included accessories: 1 pair of earpiecesStock cable2 silicone-tip types, one pair each in S/M/L; 6 pairs totalLeather carrying caseSPA wristbandUser manual
- Cable conductor / material: Silver-plated OFC Litz
- Cable cores / braid: No established value in the checked records. Value not established · checked source ↗
Frequency-response graph
MeasurementSource notes
Reading limits
Public numerical data describe this sample and setup, not all production variation. Seal, tips, nozzle/filter, insertion and rig can change the shape. Bass speed, natural timbre, resolution, separation and stage are not established by FR alone.
Evidence at a glance
Registered source records
7
May include specifications, retail pages, reviews and notes. This is not a count of independent listening reviewers.
Specifications and sourcesMeasurement curve
Registered
Different fixtures, tips and insertion depths are not a controlled comparison. Check the recorded conditions.
Specifications and sourcesProduct video links
3
Link count is not a watched-video count. Each link states whether metadata, captions or scenes were checked.
Specifications and sourcesAssessment status
Retained editorial assessment
Signature evidence and certainty of the score are separate.
Specifications and sourcesHome / Bright tone / SPA-Hi End Ultra
Reviewed reviews
Listening review 2 · All records 9Listening review 2 · Owner account 3 · Reference 4
- 1 1. moonstarreviews.net · Original source ↗ · moonstarreviews.netListening reviewSource notes
MOONSTAR — SPA-Hi End Ultra
약한 V자, 강한 저음과 밝은 고음, 상대적으로 뒤의 중역과 넓은 무대.
- 2 2. www.mobile01.com · Original source ↗ · mobile01.comOwner accountSource notes
Mobile01 — SPA-Hi End Ultra firsthand review
적당한 저음과 두께 있는 여성 보컬, 편안한 고음, 보통 크기 무대의 균형형으로 청음.
- 3 3. forum.hifiguides.com · Original source ↗ · forum.hifiguides.comListening reviewSource notes
EarAcoustic SPA - High End Ultra overview, CAA thread post 1805
곡에 맞춰 깊게 울리는 서브베이스와 빠른 중저음, 깨끗하고 상세하지만 약간 얇고 유기적 질감이 부족한 보컬. 고음은 밝고 맑고 공기감이 있으며 치찰/자극은 없다고 평가. 무대는 귀 사이의 보통 크기와 높이·앞뒤 깊이, 위치/레이어는 준수.
EarAcoustic가 Canuck Audioholics에 리뷰 유닛 제공
- 4 4. blog.naver.com · Original source ↗ · blog.naver.comOwner accountSource notes
이어어쿠스틱 SPA-HIEND ULTRA 개봉기
정확히 Ultra. Azla Sedna Light Short 팁에서 묵직한 저음의 울림·잔향, 시원하고 청명한 음색과 약간의 채색, 넓어진 공간을 평가. 쉘 재질로 소리를 설명하는 추론은 채택하지 않음.
직접 구매
Naver source body read directly
Exact SPA-HI END ULTRA, using Sedna Light Short tips. Praises weighty bass and large space; does not prove a causal effect of shell material.
2026-10-25 - 5 5. clearheadphones.com · Original source ↗ · clearheadphones.comOwner accountSource notes
EarAcoustic Audio SPA-Hi End Ultra 聴き込みレビュー
정확히 SPA-Hi End Ultra 구매 청음. 깊고 힘 있는 저음·가까운 중역·상대적으로 억제된 고역으로 밝은 고역형의 반례. 리케이블/팁 변경 후 소감은 기본과 분리.
Personal purchase stated; affiliate links present.
Read the listening section of the Japanese article; this was not video viewing.
Personal purchase stated; affiliate links present.
- 6 6. www.youtube.com · Original source ↗ · youtube.comReferenceSource notes
Richard Box Reviews · V-Power Sound: EarAcoustic Hi-End Ultra
저자 설명은 강한 저음과 상세한 고음의 대비·넓은 공간을 표방. 기존 실제 청취의 보조로만 사용하며 독립 상세 청취 수에 가산하지 않음.
제공 관계 미확인
저자가 작성한 영상 설명만 확인; 영상·자막 미확인
- 7 7. cafe.naver.com · Original source ↗ · cafe.naver.comReferenceSource notes
닥터헤드폰 · 공구제품 spa 하이앤드울트라 ~
공동구매한 SPA 하이엔드 울트라의 저음과 전반적 만족도가 좋았다는 짧은 초기 소감이다. 저음의 양·확장·속도나 중고역에 관한 설명은 없어, 저음 품질에 대한 개인 호평으로만 제한한다.
공구 제품 사용·만족 문맥; 무상 제공·광고 관계 미명시
카페 내부 검색 후 사용기 본문 직접 열람. 공동구매제품사용·비교대상Lucifer언급; 소스·팁·음량·케이블정확모델미기재.
This brief owner impression praises the bass and overall satisfaction of SPA Hi-End Ultra. It does not describe bass quantity, extension, speed or upper-range behaviour, so its use is limited to personal bass preference.
Original setup and disclosure (Korean)공동구매제품사용·비교대상Lucifer언급; 소스·팁·음량·케이블정확모델미기재. · 공구 제품 사용·만족 문맥; 무상 제공·광고 관계 미명시
- 8 Search scope and exclusions ↗Reference
- 9 Full Naver review scope ↗Reference
YouTube videos for this product
3 itemsVerification level: A registered link does not mean completed audiovisual analysis. Check the scope on each video.
- 1 New King of V-Shaped IEMs? SPA-Hi End Ultra Review ↗Metadata checked · audiovisual analysis incomplete
제목과 개요만 확인; 음색 결론 근거 미가산
- 2 V-Power Sound: This is what the EarAcoustic Hi-End Ultra sounds like | Full Review ↗Metadata checked · audiovisual analysis incomplete
저자 설명에 powerful bass, detailed highs, wide soundstage 및 V형 명시. 직접 영상 시청/자막 검토 아님.
- 3 Ear Acoustic SPA Hi End Ultra Review - The Energetic Songstress ↗Metadata checked · audiovisual analysis incomplete