Binary Dynaquattro VS Epz K9

Binary Dynaquattro and Epz K9 use 4DD and 1DD+8BA driver setups respectively. Binary Dynaquattro costs $260 while Epz K9 costs $299. Epz K9 is $39 more expensive. Binary Dynaquattro holds a slight 0.3-point edge in reviewer scores (7.8 vs 7.5). Binary Dynaquattro has significantly better dynamics with a 1-point edge.

Jaytiss Score

Binary Dynaquattro

7.8 /10

Jaytiss Score

Epz K9

7.5 /10

Score gap: 0.3

Metric	Binary Dynaquattro	Epz K9
Mids	6	6
Treble	6	6
Soundstage	7	7
Dynamics	8	7
Tonality	6.8	6.5
Technicalities	6	6

Take these comparisons with a grain of salt—we don't have enough Binary Dynaquattro and Epz K9 reviews saved yet to provide an unbiased result.

Jaytiss Reviews Comparison

Binary Dynaquattro reviewed by

7.8 Reviewer Score

B+ Tuning

B Tech

It has great tuning, but lack serverly in some areas. Very fun.

Youtube Video Summary

Binary Dynaquattro comes dressed to impress: a larger, comfy shell that sits better than it looks, though seating can be a touch finicky. Accessories feel thoughtfully chosen—a Pelican-style case, usable tips, and a standout cable with a screw-lock modular plug (ships with 4.4 mm) and a handsome gunmetal vibe; the chin slider actually works and handling is supple with a slight rubbery grip. Build notes versus peers: it’s notably bigger than Gizaudio Chopin (flat 2-pin vs. Chopin’s recessed) and a bit larger than AFUL Magic One, but overall comfort remains solid.

The tuning aims dead at a preferred target: rich, deep sub-bass with restrained mid-bass for a clean foundation, energetic mids, and a deliberate 4–6 kHz dip to keep fatigue low; air is “good for the price,” with upper-treble sparkle the only wish-list item. Technicals read 9.5/10 bass, 9.5/10 mids, highs a notch behind, plus nice imaging, pleasing note weight, and a natural stage/resolution balance. Versus the field: deeper, higher-quality bass than Chopin; competes surprisingly well with the pricier Thieaudio Oracle MK3; more engaging than the neutral-leaning Moondrop x Crinacle Dusk; preferred over Project M thanks to truer target adherence; trades blows with Dunu Da Vinci (Da Vinci = a touch more upper air; Dynaquattro = better bass/mids). Close kinship with Juzear 61T (choose Dynaquattro for richer bass, 61T for a more inoffensive, cheaper take), and consider Letshuoer Cadenza 4 if similar mids with less bass is the brief.

In practice this is a fun, fatigue-lite, bass-quality-first all-rounder with tuning doing the heavy lifting—“tuning trumps technicality” in the best way. The package, from the utilitarian accessories to the modular cable, matches the sonic story: high value, target-true, and easy to recommend for music and gaming (9/10). Call it a five-star pick and a “100-point overall” vibe for listeners who want clean sub-bass authority, lively mids, and a relaxed upper-mid/low-treble that invites longer sessions without dulling the experience.

Mids: B Treble: B Dynamics: A+ Soundstage: A-

Jaytiss original ranking

Jaytiss Youtube Channel

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Price: $194.99

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Epz K9 reviewed by

2025-09-21

7.5 Reviewer Score

B+ Tuning

B Tech

A little bit too much lower trebble, but it's still a good balanced set.

Youtube Video Summary

EPZ K9 brings a flashy spec sheet and premium feel: a 9-driver hybrid (1DD+8BA) dressed in a world-class shell that fits securely, vents properly, and looks gorgeous with its blue-white case. The stock cable offers swappable 3.5↔4.4 termination and a steady chin slider, though the fabric sheathing and barely visible L/R markers are quirks. Originally teased near $300 and now closer to $400, the package screams polish more than compromise.

Sonically, this is a V-shaped tuning with rich bass, thick lower mids, and extra energy in the 3–6 kHz band that can make stick hits and sibilants feel a touch sharp. The midrange clarity is only decent and the upper-air/treble extension is just okay, but staging comes across pleasantly open. Graph comparisons paint the picture: versus EPZ’s own P50 (safer, flatter upper mids) and the more majestic, warm-lean V of the EPZ 530, K9 pushes that presence region a few dB higher. Sets like Afu Dawn X flatten that band while extending air; Softears Volume offers a very similar profile but even more 5–6 kHz energy; and options around this price—Magic Top Pro, Yu9 Chua—show alternate takes with either dipped presence or stronger bass/1 kHz support.

In practice, K9 aims for excitement: weighty bass, a forward upper-mid/low-treble bite, and a lively stage. Listeners craving a crisp, energetic V will find plenty to enjoy, while those sensitive to brightness or seeking mid clarity and airy refinement may prefer the P50, 530, or similarly priced competitors. Stunning build and respectable performance, but the tuning choices make it a taste-dependent recommendation rather than a universal pick.

Mids: B Treble: B Dynamics: A- Soundstage: A-

Jaytiss original ranking

Jaytiss Youtube Channel

Driver Configuration: 4DD

Tuning Type: n/a

Price (Msrp): $260

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$194.99

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Driver Configuration: 1DD+8BA

Tuning Type: Warm, W-Shaped

Top Warm IEMs Top W-Shaped IEMs

Price (Msrp): $299

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Binary Dynaquattro Scorings

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

The presentation is steady if unspectacular, holding onto essential details when the music stays simple. Fine details occasionally slip through the cracks.

Mids B

The mids are articulate and well-balanced, lending body to instruments. Instrument layering remains stable.

Treble B

Treble response is good, delivering clarity and sparkle without fatigue. Hi-hats sound lively without sting.

Dynamics A+

Dynamic range is superb, blending powerful impact with nuanced control. It captures both whisper and roar effortlessly.

Soundstage A-

The stage stretches in every direction, carving out clear three-dimensional pockets for each player. Placement accuracy impresses from the start.

Epz K9 Scorings

Average Tunign Grade

B+

The tuning leans easygoing, yet occasional unevenness nudges it away from greatness. A bit of EQ polish can smooth things nicely.

Average Technical Grade

Overall technicalities are acceptable, delivering enough clarity for casual sessions. Imaging is serviceable though not immersive.

Mids B

Midrange presence is good, delivering clear vocals and solid texture. Voices come through with pleasing clarity.

Treble B

Highs sound lively and extended while remaining controlled. Detail retrieval keeps shimmer intact.

Dynamics A-

Expect excellent punch and micro-detail that render rhythmic shifts effortlessly. It keeps up with complex rhythmic swings.

Soundstage A-

All dimensions bloom together, producing an expansive venue that feels carefully rendered. You can map the ensemble easily.

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