Noble Audio Onyx
Across Headfonia and Bloom’s approved coverage, the Onyx comes through as a premium, neutral-warm quadbrid that majors on polish, immersion, and textured low-end power rather than exaggerated V-shape theatrics. The bass is repeatedly described as strong and controlled, the mids clear and full, and the stage spacious enough to give flagship material a convincing sense of scale. The Onyx is also framed as an endgame-style listen with upscale build and presentation. Its compromises are predictable for the class: price is steep, and its character leans more toward refined fullness and immersive richness than aggressive excitement.
Simgot EA500LM
The EA500LM is a single dynamic driver IEM in an all-metal, mirror-finished shell, sold at about $89 with three pairs of screw-in tuning nozzles. The tuning is described as a balanced U-shape with elevation at both extremes: sub-bass extends deep and lands with punch, slam and chesty impact, and the treble is bright, airy and extended. Reviewers do not agree on what that treble costs. Some report occasional sibilance in the upper treble, female vocals turning a tad strained, a not-smooth and slightly peaky presentation, and fatigue over long sessions for treble-sensitive listeners. Others hear highs that stay clear, liquid and smooth and never turn harsh, piercing or sibilant. Bass definition divides them the same way: one read calls the low end thick, round and often bloomy and names it the weakest part of the set, while others find the sub-bass and midbass clean, defined and free of boominess. The nozzles are a third fault line. One measurement-led take found two of the pairs sounded and measured the same, and another reviewer skipped them entirely as making little difference to the sound profile, yet a third needed the gold pair before the upper mids stopped sounding overly present, harsh and fragile. Build quality, comfort and detail retrieval draw broad praise, while soundstage width is the attribute most often qualified. This is a strong budget dynamic driver whose agreeability depends on treble tolerance and on which nozzle is left installed.
