Letshuoer Mystic 8 VS 64 Audio U4S

IEM Comparison: Expert & Community Scores Side-by-Side

Letshuoer Mystic 8 and 64 Audio U4S use 8BA and 1DD+3BA driver setups respectively. Letshuoer Mystic 8 costs $1,000 while 64 Audio U4S costs $1,100. 64 Audio U4S is $100 more expensive. Letshuoer Mystic 8 holds a clear 0.8-point edge in reviewer scores (8.6 vs 7.8). Letshuoer Mystic 8 has significantly better treble with a 3-point edge, 64 Audio U4S has significantly better dynamics with a 2-point edge and Letshuoer Mystic 8 has significantly better soundstage with a 2.5-point edge.

Insights

Jaytiss Score
Letshuoer Mystic 8
8.6 /10
Jaytiss Score
64 Audio U4S
7.8 /10
Score gap: 0.8
Metric Letshuoer Mystic 8 64 Audio U4S
Mids 8 8
Treble 9 6
Soundstage 8.5 6
Dynamics 5 7
Tonality 7.6 6.8
Technicalities 9 6
Take these comparisons with a grain of salt—we don't have enough Letshuoer Mystic 8 and 64 Audio U4S reviews saved yet to provide an unbiased result.

Jaytiss Reviews Comparison

Letshuoer Mystic 8 reviewed by

Jaytiss 8.6 Reviewer Score
A Tuning
S Tech
Lack Bass Richness, but is a beautiful set.
Youtube Video Summary

Build and presentation hit above the price rumor: a dense, metallic shell with a sleek “cat” motif, excellent nozzle/fit, and a surprisingly handy case with a rubber lid that’s easy to pop open. The 8-BA array (Sonion + “NSBA” branded drivers) gives it pedigree, while the stock cable feels a bit chintzy despite a 4.4 mm termination and chin slider. Final pricing isn’t set (the placeholder listing is a meme), but the talk is roughly around $1,000, which frames expectations for the rest.

On tuning, Mystic 8 comes across reference-lean, very clean and clear, with extended upper-mids/treble and a lighter bass shelf. It’s a laid-back, chill listen with strong micro-detail, imaging, and stage, but the macrodynamics feel reserved and the bass lacks some rich, organic texture; hip-hop and slam-seekers may bounce. A small EQ bass lift (sub/mid-bass shelf) unlocks body and brings the set to life without breaking its neutral poise.

In context, it outclasses Cadenza 4 for naturalness and timbre, while Cadenza 12 (2024) offers richer bass but has an odd upper-mid quirk and a much higher tag. The FR echoes the Monarch Mk II; if Monarch felt light down low, Mystic 8 won’t fix that, though it crushes it on shell/build. Versus sets like Thieaudio Origin (bigger shell, weaker micro-detail), Canpur Verdandi (more bass/upper-mid bite), or DAA Mecha (fun but not neutral), Mystic 8 positions itself as a refined, mid-focused all-BA with standout technicals and an ownership appeal. As a ~$1k competitor, it’s compelling—just not the most visceral/engaging without that tasteful EQ nudge.

Mids: A+ Treble: S Dynamics: C+ Soundstage: S-

Jaytiss original ranking

Jaytiss Youtube Channel
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64 Audio U4S reviewed by

Jaytiss 7.8 Reviewer Score
B+ Tuning
B Tech
It's a solid set, with great build quality, but sonically isn't the specialist that I want it to be.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: A+ Treble: B Dynamics: A- Soundstage: B

Letshuoer Mystic 8 Details

Driver Configuration: 8BA

Tuning Type: Neutral

Brand: Letshuoer Top Letshuoer IEMs

Price (Msrp): $1,000

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64 Audio U4S Details

Driver Configuration: 1DD+3BA

Tuning Type: Neutral, Neutral with Bass Boost

Brand: 64 Audio Top 64 Audio IEMs

Price (Msrp): $1,100

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Letshuoer Mystic 8 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A
  • The response is even and composed, lending itself to effortless genre hopping. Voices sit comfortably in the mix.

Average Technical Grade

S
  • Resolution and control feel outstanding, surfacing micro-details with ease. You'll catch studio quirks you may have missed before.
Mids A+
It offers a luxurious, resolving midrange that captures micro-detail beautifully. Every vocal inflection is captured.
Treble S
This is reference-grade treble, combining flawless clarity with absolute naturalness. It captures the faintest shimmer with grace.
Dynamics C+
You get reliable macrodynamics, with micro shifts that remain only adequate. A reliable performer for most tracks.
Soundstage S-
Exceptional soundstage with holographic imaging that lets instruments float naturally around you. It paints a holographic bubble around you.

64 Audio U4S 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

B
  • An honest, middle-of-the-road performance preserves structure without chasing micro-detail. It's respectable for everyday listening sessions.
Mids A+
Midrange quality is superb, rich with resolving power and transparency. Micro-details leap out effortlessly.
Treble B
Expect crisp, well-balanced treble that keeps shimmer intact. You hear reverbs decay naturally.
Dynamics A-
You get outstanding dynamic agility, from subtle nuances to big hits. Impact comes with quick recovery.
Soundstage B
Good soundstage with proper width and depth, placing instruments in clearly defined positions. Instruments sit in their own lanes.

Letshuoer Mystic 8 User Reviews

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