Kiwi Ears KE4 and FatFreq x HBB Deuce use 2DD+2BA and 2DD driver setups respectively. Kiwi Ears KE4 costs $199 while FatFreq x HBB Deuce costs $239. FatFreq x HBB Deuce is $40 more expensive. Kiwi Ears KE4 holds a clear 0.7-point edge in reviewer scores (7.5 vs 6.8). Kiwi Ears KE4 carries a user score of 6.5. Kiwi Ears KE4 has significantly better mids with a 1-point edge, Kiwi Ears KE4 has significantly better treble with a 1-point edge and Kiwi Ears KE4 has significantly better soundstage with a 1-point edge.
Insights
Metric | Kiwi Ears KE4 | FatFreq x HBB Deuce |
---|---|---|
Mids | 7 | 6 |
Treble | 6 | 5 |
Soundstage | 7 | 6 |
Dynamics | 6 | 6 |
Tonality | 6.5 | 5.8 |
Technicalities | 6 | 5 |
Jaytiss Reviews Comparison
Kiwi Ears KE4 reviewed by
Youtube Video Summary
Build & accessories: understated box, a surprisingly nice cable with a “juicy” feel and flat 2-pin connectors, plus extra filters. The stock tips are the weak link—thin out note weight and feel downright horrific, so a tip swap is recommended. The medium-to-large shell is a highlight: secure fit, comfy nozzle size, and a handsome faceplate that looks premium in ear. Overall ergonomics and finish scream daily-driver friendly.
Sound: impactful, well-judged bass, lively upper mids, and a touch of upper-air jank; for $200 it’s a strong value with a clean, modern JM1-style tuning. Easily the most convincing Kiwi Ears to date: more balanced and natural than Quintet (which pushes upper mids/10 kHz energy), far more sensible than the treble-shouty Forteza, a clear upgrade over budget options like DLS and the tiny, poorly packaged Singolo, and less fatiguing than the bass-and-upper-mid heavy Melody. Against $200 benchmarks, KE4 becomes a new reference—cleaner male vocals and better build than “Chopin,” and a tighter low end plus tidier mids than AFUL Performer 5. Trades blows with Hype 4 at a fraction of the price; those craving a pricier step-up in the same vein can eye HiSenior Mega5EST. Measured verdict: Tier A, 3-star, 8.8 for tone—good imaging, solid soundstage, gamer-friendly, not flawless but genuinely excellent once re-tipped. A handsome, comfortable set that delivers outstanding value for newcomers and gift-givers alike.
Jaytiss Youtube Channel
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FatFreq x HBB Deuce reviewed by
Youtube Video Summary
FatFreq x HBB Deuce brings a compact, comfortable shell with a gray metallic finish and easy tip fitment; ergonomics and weight are spot-on. Packaging is straightforward but solid, and the stock cable is decent—secure chin slider and tidy Y-split—though a bit microphonic. The recessed 2-pin connector can be fragile if carelessly handled; a replacement unit solved earlier issues. A standout extra is the included impedance adapter (4.4mm), which meaningfully alters drive and response.
Sonically, this is a double dynamic driver set tuned for excitement: clean mids with realistic note weight, lively upper presence, and genuinely pleasing air and sparkle. The hallmark is a colossal bass shelf beginning around ~200 Hz—punchy, tactile, and sometimes “pop-out-of-nowhere” feisty. With the adapter, expect roughly ~10 dB more low-end and a need for a couple volume clicks, turning it into full-on guilty-pleasure territory. Despite the bass emphasis (and a slight “tuck” sensation), vocal presence stays intact and timbre remains cohesive for a DD-driven set.
Against FatFreq siblings and peers, Deuce feels more controlled than Scarlet Mini’s later-rising low shelf, cleaner and more coherent than Maestro Mini, and trades blows with Black Up while echoing some of the top-end fun found in Grand Maestro. Versus higher-priced favorites (e.g., Jupiter, Binary Dynaquattro), it gives up some refinement/extension but returns remarkable value around ~$240. For those craving “gigachad” bass without wrecking the mids, this is a distinctive, versatile daily that suits many genres and feels special at the price. Final take: a strong 87/100 and one of the most enjoyable recent HBB collabs—imperfect, yes, but thrilling and highly recommended for bass-inclined listeners.
Jaytiss Youtube Channel
Kiwi Ears KE4 Details
Driver Configuration: 2DD+2BA
Tuning Type: Neutral, Neutral with Bass Boost
Brand: Kiwi Ears Top Kiwi Ears IEMs
Price (Msrp): $199
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FatFreq x HBB Deuce Details
Driver Configuration: 2DD
Tuning Type: n/a
Price (Msrp): $239
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Kiwi Ears KE4 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
B+- A mostly enjoyable signature keeps things listenable despite a handful of quirks. It handles most playlists without major complaints.
Average Technical Grade
B- An honest, middle-of-the-road performance preserves structure without chasing micro-detail. It's respectable for everyday listening sessions.
FatFreq x HBB Deuce Scorings
Average Technical & Tuning Grades
Average Tunign Grade
B-- It sounds pleasant overall, with some uneven spots that hint at room for refinement. Vocals remain pleasant despite the imperfections.
Average Technical Grade
C+- Overall technicalities are acceptable, delivering enough clarity for casual sessions. Imaging is serviceable though not immersive.
Kiwi Ears KE4 User Reviews
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You need to be signed in to write your own reviewSolid pick for the price, if you're after a warm neutral sound.
Pros
Overall very pleasant balance with good tonality and perceived technicalities for the price.Cons
Bass can come off slightly boomy and a bit disjointed sounding at times, and somewhat relaxed upper mids gives a perception of bluntness to the sound, most evident on snare and other percussive strikes.FatFreq x HBB Deuce User Reviews
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Pros
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Cons
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