64 Audio Aspire 4 and FlipEars Legion are in-ear monitors. 64 Audio Aspire 4 costs $799 while FlipEars Legion costs $849. FlipEars Legion is $50 more expensive. FlipEars Legion holds a decisive 1.5-point edge in reviewer scores (6 vs 7.5).
Insights
Metric | 64 Audio Aspire 4 | FlipEars Legion |
---|---|---|
Bass | 6 | 7.5 |
Mids | 6 | 7 |
Treble | 6 | 6.8 |
Details | 6 | 7.5 |
Soundstage | 6 | 7 |
Imaging | 6 | 7.5 |
Dynamics | 6 | 7 |
Gaming capabilities | 5.5 | 6.4 |
64 Audio Aspire 4 Aggregated Review Score
64 Audio Aspire 4 Average Reviewer Scores
FlipEars Legion Aggregated Review Score
FlipEars Legion Average Reviewer Scores
64 Audio Aspire 4 Details
Driver Configuration: n/a
Tuning Type: n/a
Price (Msrp): $799
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FlipEars Legion Details
Driver Configuration: 1DD+1EST+1BC
Tuning Type: Bass-focused with balanced mids and treble
Price (Msrp): $849
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64 Audio Aspire 4 User Review Score
64 Audio Aspire 4 Average User Scores
Average User Score: n/a
Based on 0 user reviews
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FlipEars Legion User Review Score
FlipEars Legion Average User Scores
Average User Score: n/a
Based on 0 user reviews
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64 Audio Aspire 4 Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
5.5Gaming Grade
B-FlipEars Legion Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
6.4Gaming Grade
B64 Audio Aspire 4 Scorings
FlipEars Legion Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A- Well-executed tonal character. No major flaws with good technical control. Smooth presentation works with multiple genres.
Average Technical Grade
A-- Competent technical presentation. Handles separation and detail well in most tracks, with modest soundstage and acceptable imaging capabilities.
64 Audio Aspire 4 Reviews
64 Audio Aspire 4 reviewed by: Super* Review
2025-07-20Very dark sounding IEM. Very warm and thick. But decent treble extension.Super* Review original ranking
Super* Review Youtube Channel
FlipEars Legion Reviews
FlipEars Legion reviewed by: Jays Audio
Fun and bassy, v-shape, great low-end slam and texture, full, rumbly, solid tech imaging, and cool faceplate... but price is a bit high. Jays Audio Youtube Channel
FlipEars Legion reviewed by: Smirk Audio
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FlipEars Legion reviewed by: Jaytiss
What this does well, it does very well. Fun set. Jaytiss Youtube Channel
FlipEars Legion reviewed by: IEMRanking AI

The FlipEars Legion makes a commanding entrance with its striking Roman legionnaire-inspired design, featuring jewelry-cast rose-plated brass faceplates hand-painted by master artisans in Bulacan, Philippines, ensuring each unit is a unique masterpiece. While the substantial resin housings may challenge smaller ears, the included Eletech Baroque tips and pliable cable contribute to a surprisingly secure and comfortable fit over time. Unboxing feels luxurious, with a premium leather case and meticulous packaging underscoring FlipEars' commitment to craftsmanship.
Sonically, the Legion leverages its innovative tribrid driver system to deliver thunderous, tactile bass via a custom dynamic driver and EarQuake bone conduction unit, creating visceral sub-bass rumble without muddying the midrange. The midrange remains lush and articulate, presenting vocals with natural warmth and instruments with rich texturing, while the SPARK electret tweeter adds refined, fatigue-free sparkle to the highs. This synergy results in a cohesive, immersive sound signature that prioritizes musical engagement over analytical sharpness, making complex tracks feel both powerful and nuanced.
Technically, the Legion punches above its price point, boasting a holographic soundstage with precise instrument placement and exceptional layering that rivals models costing twice as much. Its imaging is pinpoint accurate, rendering subtle ambient cues and dynamic shifts with effortless clarity, while the bone conduction driver enhances physicality and depth without sacrificing control. Though its bass-forward tuning might not suit treble purists, the Legion excels as a reference-grade all-rounder for those seeking technical prowess paired with relentless musicality.
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