Ikko Audio Gems OH1S
The Ikko Audio Gems OH1S puts midrange presence front and centre, giving vocals, guitars and piano an engaging, naturally textured focus. MajorHifi found its controlled, percussive bass, coherent tuning and bright-yet-smooth treble especially rewarding. Interchangeable nozzles and a well-stocked accessory set make this a versatile hybrid IEM for listeners who favour musical clarity over bass excess.
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Nicely Roasted
Sound Quality
86/100
Fit Comfort Isolation
85/100
Build Accessories
86/100
Value for Money
91/100
Pros
Forward, engaging midrange gives vocals, guitars and piano strong presence without harsh resonance.
Controlled bass retains satisfying attack and percussion despite a restrained quantity.
Coherent, clean timbre avoids unpleasant frequency bleed.
Useful accessories include interchangeable tuning nozzles, MMCX cable, carry case and cable-removal tool.
Cons
Very busy recordings do not deliver class-leading separation of individual elements.
Soundstage is competent rather than especially expansive or holographic.
Restrained bass and a bright presentation may not suit bass-focused or treble-sensitive listeners.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 86/100
The Gems OH1S is described as a coherent, mid-forward IEM with natural timbre, cleanly controlled bass, and a bright presentation that remains generally listenable. Its limitations are mostly technical rather than tonal: crowded arrangements do not receive exceptional separation, and the stage is competent rather than expansive.
Bass
86/100
Bass is neither heavily boosted nor rolled off, giving the OH1S a measured low-end balance rather than a basshead presentation. The reviewer still heard pleasing attack and percussion, which helps the relatively restrained bass remain satisfying.
Midrange
91/100
The midrange is the clear focal point, with guitars, vocals, and piano given an engaging forward presence. Importantly, that emphasis was not found to introduce objectionable resonance or harshness.
Treble
86/100
The reviewer characterizes the OH1S as bright, so listeners sensitive to upper-frequency energy should take note. At the same time, the presentation was appreciated for its smoother, warmer high-end character rather than an aggressively boosted edge.
Resolution Separation
81/100
The OH1S handles ordinary material capably, but very dense and busy recordings may not reveal every individual element with maximum clarity. This is the most clearly stated technical limitation in the review.
Soundstage Imaging
84/100
Soundstage is described as appropriate for the price, without being especially striking or disappointing. It can accommodate mixes that are already wide, but it does not substantially enlarge a conventionally mixed recording.
Dynamics Coherence
88/100
The reviewer found the presentation notably coherent, without unpleasant bleeding between frequency ranges. Bass attack and percussion also contribute useful rhythmic energy despite the moderate bass quantity.
FIT COMFORT ISOLATION PERFORMANCE 85/100
Fit was trouble-free for the reviewer, with the slightly shaped shell improving how securely the earpieces sat in the ear. Comfort was solid rather than exceptional, while the review provides no direct assessment of passive isolation.
Seal Stability
86/100
The reviewer found that the slightly warped shell shape produced a better fit in the ear. No recurring seal loss, bass loss, or instability was reported.
Comfort
85/100
There were no major fit problems during the review, placing comfort in a clearly satisfactory range. The reviewer has experienced more comfortable IEMs, but also substantially worse ones.
Isolation
85/100
The review says little about passive isolation in daily environments. There is no reported evidence of either unusually strong attenuation or a notable isolation shortfall.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Accessories
86/100
The package includes a leather carry case, detachable MMCX cable, replacement nozzles for altering the sound, and a useful tool for disconnecting the cable without stressing the connectors. The case is simple, but the nozzle options and removal tool add practical ownership value.
Value for Money
91/100
At $159, the reviewer calls the Gems OH1S a great deal for the price. That enthusiasm is supported by its pleasing timbre, strong midrange, coherent tuning, and useful included accessories, even if ultimate separation is not its specialty.
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Manufacturer's Description — Ikko Audio
Featuring Detachable MMCX Cables.
SVAS Technology: Utilize the unique Separating Vector Acoustics System (SVAS) technology. This precision-engineered cavity structure optimizes sound volume, reflection, and diffusion angles, ensuring exceptional performance in a compact space.
1DD+1BA Hybrid Driver: A 32Ω 10mm Deposited Carbon Nano Dynamic Coil combined with a Knowles 33518 unit creates a balanced three-frequency response. The headphones use resin and aviation-grade aluminum alloy for the sound cavity, facilitating physical frequency division. This design minimizes interference between sound units, resulting in purer and more transparent audio.
Unique Appearance Design: Distinctive mixed-material design, blending resin with metal to reduce weight. The oval sound outlet and ergonomic design enhance wearing comfort. Special resin material is used for efficient sound damping.
Detachable MMCX Cable: 127µm high-purity single-crystal copper that's silver-plated, ensuring high-fidelity sound transmission. Its double-strand braided wire and full-wrap design effectively prevent cable tangling and reduce weight.
Abundant Accessories: The package includes six sizes of silicone eartips, three sizes of sponge (I-planet), a storage box, and a brooch. IKKO provides top-notch after-sales service, making your purchase worry-free.
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Authorized dealers for Ikko Audio Gems OH1S
- A1 Futureshop — online and in-store — North Rocks, New South Wales, Australia (website)
- Advanced MP3 Players — online and in-store — Musselburgh, Scotland, United Kingdom (website)
- Audeos — online and in-store — Żywiec, Województwo śląskie (website)
- Audio 46 — online and in-store — New York, New York, United States (website)
- Audio Domain — online and in-store — Stadtbezirke I, Nordrhein-Westfalen, Germany (website)
- Audio essence — online and in-store — Zürich, Zürich, Switzerland (website)
- AUDIOPHONICS — in-store — Bordeaux, Nouvelle-Aquitaine, France (website)
- Patefon — online and in-store — Basmanny District, Moscow, Russia (website)
- Penon Audio — online and in-store — New Territories, Hong Kong (website)
- XChesser Audio — online and in-store — Ramenskoye, Moscow Oblast, Russia (website)