Tanchjim OXYGEN

The low end is thick, lush and continuously present without taking over the presentation. It can occasionally lose articulation and detail, becoming mildly diffuse rather than remaining tightly defined.

Reviewers describe the midrange as soft, delicate and clear, with no loss of definition. Vocals are a major attraction: large, inviting and sometimes ethereal, yet never shouty.

Treble is reported to be sufficiently extended, clear, smooth and articulate. The review identifies few negative traits, suggesting a detailed top end that avoids obvious harshness.

The Oxygen earns strong praise for layering and microdetail, with performance considered competitive with considerably pricier earphones. Separation is generally excellent, though dense tracks that depend on broad spatial scale can make individual instruments harder to distinguish.

The stage is not especially wide, but it offers useful height and notably strong depth. Imaging is described as excellent despite much of the spatial activity remaining within the listener's head.

Both micro- and macro-dynamics are described as particularly well judged for its single graphene dynamic driver. The presentation appears cohesive and naturally paced, reinforcing the earphone's easy musicality.

The reviewer found that fit may be a struggle for some listeners despite the ergonomic design claim. E-Pro horn-shaped tips provided a more appropriate fit and improved sonics, indicating that tip matching is important to obtaining a reliable seal.

The metal shell is said to be substantially smaller in person than photographs suggest, which should help wearability for many users. The reviewer found a comfortable and effective setup with E-Pro horn-shaped tips, although fit remains anatomy-dependent.

The review provides no meaningful direct comments on passive noise isolation in daily use. Its isolation performance is therefore not clearly established from the available listening evidence.

The Oxygen uses a compact metal shell, a properly recessed two-pin connection and an included silver-plated OFC cable with a straight 3.5 mm plug. The reviewer also found that aftermarket-style E-Pro horn tips materially improved fit and sonics, though the supplied tip selection and long-term durability receive little discussion.

At roughly $225 to $270, the Oxygen is acknowledged as expensive, but the review concludes that it exceeds expectations for both build and sound. Its detail capability is also considered comparable with substantially more expensive sets, supporting its appeal within this price class.