Fearless S4 Aggregated Review Score
Fearless S4 Average Reviewer Scores
Average Reviewer Score:
5.5Generally Unfavorable
Punch Audio Martilo Aggregated Review Score
Punch Audio Martilo Average Reviewer Scores
Average Reviewer Score:
7.4Generally Favorable
Fearless S4 Details
Driver Configuration: 4BA
Tuning Type: V-Shaped
Price (Msrp): $290
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Punch Audio Martilo Details
Driver Configuration: 2DD+2BA+1Planar
Tuning Type: Bassy with midrange clarity
Price (Msrp): $329
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Fearless S4 User Review Score
Fearless S4 Average User Scores
Average User Score: n/a
Based on 0 user reviews
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Punch Audio Martilo User Review Score
Punch Audio Martilo Average User Scores
Average User Score: n/a
Based on 0 user reviews
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Fearless S4 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-Punch Audio Martilo Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
7.2Gaming Grade
A-Fearless S4 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
B-- Flawed execution of tonal character. Noticeable peaks/dips affect timbre and coherence. May suit specific genres but lacks refinement.
Average Technical Grade
B-- Competent but unremarkable. Decent detail retrieval in quieter tracks, though busy sections challenge cohesion. Imaging is average, lacking depth.
Punch Audio Martilo 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-- Above average technicalities. Handles separation and detail adequately in simpler tracks, but complex passages remain challenging. Soundstage is modestly sized with acceptable imaging.
Fearless S4 Reviews
Fearless S4 reviewed by: Crin
Tonally accurate though can be a little heavy with its upper midrange. Crin Youtube Channel
Punch Audio Martilo Reviews
Punch Audio Martilo reviewed by: Jays Audio
Cheaper, and slightly more energetic HBB Punch with slightly less mid-bass and slam. Endgame "balanced" basshead. Imaging feels sharper than Punch, but treble is not as smooth, aside from that very similar tech and low-end. Jays Audio Youtube Channel
Punch Audio Martilo reviewed by: Gizaudio Axel
Boosted, clean, and textured bass. Mids are surprisingly clear for a bassy set. Treble’s smooth and non-fatiguing. The bass might be too much for some. Great basshead set with strong technical chops. Great value, fun, and engaging without sacrificing clarity.Gizaudio Axel original ranking
Gizaudio Axel Youtube Channel
Punch Audio Martilo reviewed by: Jaytiss
BASS Jaytiss Youtube Channel
Punch Audio Martilo reviewed by: Tim Tuned
Pros: Strong bass, fun overall. Cons: mids need improvement for the price. Tim Tuned Youtube Channel
Punch Audio Martilo reviewed by: Z-Reviews
Punch Audio Martilo reviewed by: IEMRanking AI

The Punch Audio Martilo delivers a powerful bass experience that dominates its signature, featuring a substantial 14dB sub-bass boost. This emphasis creates visceral, physical rumble, especially in electronic or hip-hop tracks, yet avoids overwhelming the lower mids due to a precise 200Hz crossover. While the dual dynamic drivers generate impressive slam and texture, a slight bloom can occasionally creep into the low-mids on very busy tracks, though it generally maintains better control than many bass-focused rivals.
Surprisingly, the midrange retains clarity and naturalness despite the bass foundation, handled competently by the Knowles balanced armatures. Vocals, both male and female, sound full-bodied and avoid the huskiness or recession common in bass-heavy tunings, while instruments like guitars retain decent texture. The planar magnetic driver contributes a smooth, non-fatiguing treble with adequate air and detail retrieval, though it doesn't quite reach the sparkle or ultimate extension of dedicated electrostatic tweeters.
Technical performance is solid for its price and tuning goal, offering a wide soundstage with good depth and effective layering, particularly impressive given the bass quantity. Imaging is precise enough for accurate placement of instruments. While the bass is the star, the overall presentation manages to avoid being a one-note experience, offering a fun yet reasonably balanced listen that works across more genres than typical basshead sets.
Fearless S4 User Reviews
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Punch Audio Martilo User Reviews
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