Ikko Audio Obsidian OH10

The low end is a defining strength: reviewers repeatedly praise its deep sub-bass reach, physical slam, texture, and generally strong control. Its sheer quantity is not neutral, however; several reviewers hear a little diffuseness or lower-midrange bleed on certain recordings.

Clarity, vocal texture, and upper-mid presence earn praise, with several reviewers finding female vocals and guitars articulate and engaging. Yet the V-shaped balance leaves lower mids less forward, and reviewers variously describe male vocals, piano body, and some female vocals as thin, hollow, or less natural.

Most reviews describe the treble as airy, clean, smooth, and lively, with convincing sparkle and little persistent sibilance or harshness. Extension is considered good by some but only average by others, while a few tracks can sound bright or mildly harsh.

Reviewers hear clear leading edges, strong peripheral detail, and enough resolution to expose small nuances and even recording flaws. Separation is above average rather than exceptional, as dense passages can blend together and the elevated sub-bass can slightly soften transparency.

The OH10 is widely credited with a spacious, airy presentation, clean space around instruments, and accurate placement. Width is its stronger dimension, while depth and stage scale are more moderate; one reviewer also found the celebrated wide stage emerged properly only with foam tips.

Attack, punch, and macro-dynamic drive are repeatedly singled out as major attractions, particularly for drums, electronic music, and other energetic material. Transients are praised as very strong, though the bass's slightly longer decay and the uneven midrange keep the presentation from feeling completely seamless on every track.

Some reviewers achieved an easy, secure seal and praised the narrow shells and effective nozzle length. Others found getting a complete seal challenging, particularly with the stock tips; the heavy shells and average nozzle length are recurring reasons to experiment with tips.

Several reviewers call the fit extremely comfortable, citing the smooth shell shape and a near-custom feel once inserted. The metal housings are undeniably heavy, though, and more than one reviewer noticed the weight over time or experienced fatigue after roughly half an hour to an hour.

Passive isolation is generally described as average to decent, sufficient for streets and ordinary public transport. It is less suitable for the subway, aircraft, or particularly noisy settings, and achieving a good seal remains important to its real-world performance.

Reviewers strongly praise the polished, jewel-like metal shells and describe build quality as outstanding. The supplied cable is soft, flexible, low in microphonics, and solid rather than luxurious; the useful tip selection and leather pouch help, although one reviewer found the pouch impractical.

At its $199 list price, several reviewers explicitly consider the OH10 good value, an easy recommendation, or among the stronger options in the $150-$200 class. One reviewer felt its uneven midrange missed the mark for a $200 IEM, so its appeal is clearest for listeners who want its bass-forward tuning.