2annIEM COLLECTIONDates shown per source · Layout 2026.10.26

FATfreq x HBB Deuce

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Product information

At a glance

Emphasis: Bass emphasisTimbre: Warm toneListening: Rhythm and impact

A candidate for listeners seeking bass weight and impact, warmth and body and rhythmic, energetic listening.

Technical / Musical 86 / 90Retained editorial scores11 Source recordsSignature evidence · HighPrice record date · 2026-10-10Evidence for the catalogue referenceListing price: SGD 299.50–399.00 · 2026-10-25

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 ↗

Check before choosing · Verification scope

Core product facts

Release month
2024-07
Driver configuration
2DD
Catalogue reference · KRW
₩413,923USD 299.50

A recorded reference amount, not a live lowest price.

FATfreq x HBB Deuce 유닛

Photo source: fatfreq.com

Basic specifications

Specifications retained from product records; missing values are not estimated. Korean source wording is preserved where no verified translation exists.

Driver configuration2DD
ImpedanceNo established value in the checked records. Value not established · checked source ↗ · fatfreq.com
SensitivityNo established value in the checked records. Value not established · checked source ↗ · fatfreq.com
Weight and scopeNo established value in the checked records. Value not established · checked source ↗ · fatfreq.com
Nozzle diameterNo established value in the checked records. Value not established · checked source ↗ · fatfreq.com
Included accessories
  • IEM pair
  • Silver Blood detachable cable (current listed bundle)
  • Silicone tips: 3 pairs (S/M/L)
  • Bass impedance adapter
  • Filter cleaning brush
  • Carrying case
Specification source ↗ · hangout.audio
Cable conductor / materialSilver Blood · silver-plated copper (current bundle)Specification source ↗ · hangout.audio
Cable cores / braidNo established value in the checked records. Value not established · checked source ↗ · fatfreq.com
Cable lengthNo established value in the checked records. Value not established · checked source ↗ · fatfreq.com
Earpiece connector2-pin; pin diameter not confirmed
Source plug3.5 mm / 4.4 mm · selected bundleSpecification source ↗ · hangout.audio

Specification notes

현재 판매 번들의 Silver Blood 케이블과 어댑터 기준입니다. 초기 구매품의 구성과 다를 수 있습니다.

Specification source ↗ · hangout.audio

Retained product source ↗ · fatfreq.com · 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.

현재 판매 번들의 Silver Blood 케이블과 어댑터 기준입니다. 초기 구매품의 구성과 다를 수 있습니다.

FATfreq x HBB Deuce 기존 제품 자료 ↗ · fatfreq.com
Price and release evidence
Driver and design evidence

2DD

Recorded model / design notes (original language): 귀 형태를 따르는 수지 셸과 전용 저역 음향 구조를 사용합니다. 별도 저음 임피던스 어댑터와 본체 기본 상태를 구분합니다.

Product specifications / model-specific reference ↗ · fatfreq.com

Additional product reference: Holy Fucking Bass · reddit.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.

Resin shell with dedicated bass acoustic engineering.

A FATfreq and HBB dual-DD collaboration focused on sub-bass. Frequency emphasis and timbre are listed separately.

Representative character: Rhythm and impact

2ann quick note

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Sound, assessment & measurements

Technical evaluation 86 / 100

Bass97
Mids82
Treble79
Spatial presentation84

Evidence behind the technical assessment

Treble presentation: Generally smooth, with fit-dependent upper-treble exceptions. ↗

Stage and separation: Dense and immersive; bass control and separation draw mixed reports. ↗

Read sources and disagreements ↗

Musical enjoyment 90 / 100

Natural timbre86
Emotional expression91
Immersion95
Rhythm and dynamics94
Vocal and instrumental liveliness89
Long-session comfort84

Evidence behind musical enjoyment

Bass character: Very strong deep rumble; adapter adds further weight. ↗

Vocals and mids: Clarity often survives the bass, though body and vocal tone divide listeners. ↗

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 ↗

Frequency emphasis: Bass emphasis. Very strong deep rumble; adapter adds further weight. Overall timbre: Warm tone. These are separate representative axes; fit, nozzle settings and contrary accounts remain in the reviewed evidence.

Differences by listening conditions: Thin lower mids, nasal vocals, treble edge and bass fatigue can occur. Sub-bass quantity and mid-bass punch are distinct.

Concise English summaries distinguish product specifications, reviewed listening impressions and practical advice. Original source notes remain available below.

Design and model identity

Resin shell with dedicated bass acoustic engineering.

Source ↗

Bass quantity and texture

Very strong deep rumble; adapter adds further weight.

Vocal placement and midrange

Clarity often survives the bass, though body and vocal tone divide listeners.

Treble and fatigue

Generally smooth, with fit-dependent upper-treble exceptions.

Stage, separation and imaging

Dense and immersive; bass control and separation draw mixed reports.

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.

Holy Fucking Bass ↗ — 엄청난 초저음 럼블과 깨끗한 악기 분리 호평. 중저음 펀치는 평범하며 낮은 중역이 얇고 비고 상부 중역 보컬이 콧소리/샤우티로 들렸다고 평가. 중고역의 큰 피크는 적지만 짧은 광구경 팁에서 초고역 피크와 치찰음. 기존 무자극·펀치 호평의 조건부 반례.

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.

Open supporting review records ↗

How to choose this product

Preferences that match

  • bass weight and impact · warmth and body
  • rhythmic, energetic listening

Consider alternatives first if you prefer

  • lean, restrained bass ahead of weight
  • a leaner, cooler tone ahead of warmth

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.

AFUL Performer 7

Candidate treble observation: Clear and lively highs draw praise, while one cafe listener hears uneven, artificial high-frequency transitions with a HiBy R4 and an aftermarket cable.Read the observation source ↗

Different classification: Emphasis: bass weight and impact → treble definition and sparkle

Driver configuration: 2DD + 4BA + 1 Micro-Planar

Compare the pair

Agasound AGA-Z

Candidate treble observation: Earlier smooth-high impressions conflict with an owner who found the stock combination coarse and tiring after about thirty minutes.Read the observation source ↗

Shared classification: bass weight and impact · rhythmic, energetic listening

Different classification: Timbre: warmth and body → a bright, open tone

Driver configuration: 1DD · 10mm

Compare the pair

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: 2-pin; pin diameter not confirmed
  • Source plug: 3.5 mm / 4.4 mm · selected bundleSpecification source ↗
  • Cable length: No established value in the checked records. Value not established · checked source ↗
  • Impedance: No established value in the checked records. Value not established · checked source ↗
  • Sensitivity: No established value in the checked records. Value not established · checked source ↗
Specifications and sources

Included accessories

  • Included accessories: IEM pairSilver Blood detachable cable (current listed bundle)Silicone tips: 3 pairs (S/M/L)Bass impedance adapterFilter cleaning brushCarrying caseSpecification source ↗
  • Cable conductor / material: Silver Blood · silver-plated copper (current bundle)Specification source ↗
  • Cable cores / braid: No established value in the checked records. Value not established · checked source ↗
Specifications and sources

Frequency-response graph

Measurement
FATfreq x HBB Deuce frequency-response graphRedrawn from the disclosed source; see original conditions and limitations below.20501002005001k2k5k10k20k-40-30-20-100+10+20Published measurementFrequency (Hz)Relative response (dB; 1kHz = 0)
Source notes
Approximate values digitized from the graph · Normalized at 1 kHz · Checked 2026-10-07IEC-711 clone / 기본 상태, 임피던스 어댑터 없음출처: Bloom Audio ↗Results vary with measurement equipment, tips and fit. Treat results above 8 kHz as indicative.
Reading limits

These values are approximate digitization of a source image; small decimal differences should not be overinterpreted. 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

Reviewed reviews

Listening review 5 · All records 13

Listening review 5 · Owner account 2 · Reference 6

  • 1 1. mobileaudiophile.com · Original source ↗ · mobileaudiophile.comListening review
    Source notes

    Mobile Audiophile — FATfreq x HBB Deuce Review

    매우 강한 초저음, 약간 후퇴한 중역, 매끄러운 고역과 보통 수준의 무대 폭.

  • 2 2. www.head-fi.org · Original source ↗ · head-fi.orgOwner account
    Source notes

    Head-Fi — FATfreq x HBB Deuce 사용자 리뷰

    저음이 지배적인 성향에 대체로 동의하며, 중역 보존과 고역 품질의 평가는 갈린다.

  • 3 3. www.reddit.com · Original source ↗ · reddit.comOwner account
    Source notes

    Reddit — Fatfreq x HBB Deuce Impressions

    수개월 사용자는 베이스헤드 성향과 깊은 저음을 강조한다.

  • 4 4. headphones.com · Original source ↗ · headphones.comReference
    Source notes

    CanJam SoCal 2024 — Precog's Show Report: FATfreq Deuce

    압도적인 저음이 중심이지만 중역 디테일은 유지되며 고역은 온화하고 확장은 중간 정도라고 평가. 짧은 행사 청음이라는 한계가 있음.

    CanJam FATfreq 부스에서 짧게 직접 청음; 구매나 제품 제공은 아님

  • 5 5. blog.naver.com · Original source ↗ · blog.naver.comListening review
    Source notes

    펀치와 럼블의 황금비율 — 팻프렉 듀스 2DD 유선이어폰 리뷰

    풍부하고 호방한 저음·깊은 럼블과 펀치, 적절히 정리되는 잔향을 보고. 보컬/어쿠스틱 악기가 저음에 묻히지 않고 고역 분리도 좋으며 음량을 올려도 거슬리는 피크가 적다고 평가. 날선 고음의 쾌감을 원하는 취향에는 덜 맞는다고 설명.

    공식 유통사 Ankihouse International 제품 제공 명시. 내용 간섭 없다고 명시.

    Naver source body read directly

    Anki House supplied the unit. Fit, seal and design passages checked; no new detailed, independent tonal assessment was established from the visible body.

    2026-10-25
  • 6 6. blog.naver.com · Original source ↗ · blog.naver.comListening review
    Source notes

    FATfreq 스칼렛 미니 & 듀스

    듀스는 막강한 저음에도 중고역이 위축되지 않으며 타격과 럼블이 균형을 이룬다고 평가. 깔끔한 고역과 양호한 해상도, 작은 볼륨에서도 잘 드러나는 에너지를 보고. 스칼렛 미니의 소감과 분리하여 듀스 항목만 사용.

    지인의 제품이 도착해 청취한 문맥. 자비 구매/제조사 제공·금전 관계는 명시되지 않음.

    Naver source body read directly

  • 7 7. www.reddit.com · Original source ↗ · reddit.comListening review
    Source notes

    Holy Fucking Bass

    엄청난 초저음 럼블과 깨끗한 악기 분리 호평. 중저음 펀치는 평범하며 낮은 중역이 얇고 비고 상부 중역 보컬이 콧소리/샤우티로 들렸다고 평가. 중고역의 큰 피크는 적지만 짧은 광구경 팁에서 초고역 피크와 치찰음. 기존 무자극·펀치 호평의 조건부 반례.

    mour****monk 대여 유닛 명시. 원고료 관계 미표기.

    Public article and comment text opened and read directly.

  • 8 8. note.com · Original source ↗ · note.comListening review
    Source notes

    FatFreq x HBB Deuce レビュー｜低域特化の完成形

    기본도 저음 특화이며 어댑터로 더 강해짐. 큰 저음에도 보컬·기타·전자음 정보 보존을 호평; 어댑터의 무게·저음 피로 유보.

    구매·제공 관계 미명시; 실물 도착·측정 및 청음 조건 기록

    Read the listening section of the Japanese article; this was not video viewing.

    구매·제공 관계 미명시; 실물 도착·측정 및 청음 조건 기록

  • 9 9. cafe.naver.com · Original source ↗ · cafe.naver.comReference
    Source notes

    닥터헤드폰 · 이어폰 및 헤드폰 한~두줄 후기 모음

    듀스가 FATfreq 특유의 개성을 튜닝에 잘 담은 사례라고 호평한다. 구체적인 저음 양이나 고역 수치를 제시하지 않아, 상세 대역 분석보다는 전반적 청취 인상을 보조하는 짧은 의견이다.

    Personal listening or ownership account; supply or advertising relationship not stated

    카페 내부 검색 후 사용기 본문 직접 열람. 구체 소스·팁 미명시; 매우 짧은 청음평.

    Deuce is praised as a successful expression of FATfreq’s distinctive tuning character. Without a detailed account of bass quantity or treble, this is supporting overall listening opinion rather than a frequency-specific analysis.

    Original setup and disclosure (Korean)

    구체 소스·팁 미명시; 매우 짧은 청음평. · 개인 청음·소유 후기; 제공·광고 관계 본문에 명시되지 않음

  • 10 10. cafe.naver.com · Original source ↗ · cafe.naver.comReference
    Source notes

    닥터헤드폰 · 가성비 이어폰 추천

    크고 부드럽게 울리는 풍성한 저음과 탄력적인 극저음, 선명하고 투명한 중역을 기록한다. 좌우 무대는 넓지만 상하 표현과 고역 역동성은 제한적이며, 저음 양이 과할 수 있다고 본다.

    Personal listening or ownership account; supply or advertising relationship not stated

    카페 내부 검색 후 사용기 본문 직접 열람. 글 공통 순정 구성. 별도 15Ω 어댑터 사용시 저음 증가를 언급하므로 기본조건과 어댑터조건을 혼합하지 않음.

    Deuce is described with large, soft bass, elastic sub-bass and clear, transparent mids. Lateral space is broad, while vertical scale and treble dynamics are more limited; bass quantity may be excessive.

    Original setup and disclosure (Korean)

    글 공통 순정 구성. 별도 15Ω 어댑터 사용시 저음 증가를 언급하므로 기본조건과 어댑터조건을 혼합하지 않음. · 개인 청음·소유 후기; 제공·광고 관계 본문에 명시되지 않음

  • 11 11. cafe.naver.com · Original source ↗ · cafe.naver.comReference
    Source notes

    닥터헤드폰 · 뭐 이런이어폰이 다있죠

    우퍼처럼 크게 울리는 극저음이 특히 강하고, 저음보강 어댑터 없이도 중역 존재감이 충분하다고 한다. 어댑터를 붙이면 중역이 뒤로 물러나고 극저음이 부담스러워 어댑터 없는 설정을 선호했다.

    실제 청음 서술 확인; 구매·제공·광고 관계는 본문 미명시

    카페 내부 검색 후 사용기 본문 직접 열람. Shanling EH2·4.4mm기본케이블, 저음보강어댑터유무비교. 앰프볼륨위치는객관적필요출력으로환산안함.

    The listener hears exceptionally strong, woofer-like sub-bass with substantial mids even without the bass adapter. Adding it pushes mids back and makes the bass overwhelming, leading them to prefer listening without it.

    Original setup and disclosure (Korean)

    Shanling EH2·4.4mm기본케이블, 저음보강어댑터유무비교. 앰프볼륨위치는객관적필요출력으로환산안함. · 실제 청음 서술 확인; 구매·제공·광고 관계는 본문 미명시

  • 12 Search scope and exclusions ↗Reference
  • 13 Full Naver review scope ↗Reference

YouTube videos for this product

18 items

Verification level: A registered link does not mean completed audiovisual analysis. Check the scope on each video.