ooopusX OP.24 Review

Design & Build

Let`s first start with the design and build quality of ooopusX OP.24. This one is interesting because it’s from a newer brand (ooopusX) and offers some neat features at a budget price.

The standout: a physical tuning dial to switch between two modes. The shell is lightweight (~5.2g per side reported) and uses resin/plastic materials. The build quality for its price is decent, though some reviewers point out the cable and included accessories are modest.

Fit: comfortable out of the box for many, but the nozzle size may require tip experimentation for larger ear canals. One user noted they had to try several tip sets.

Technical & Driver Overview

Here’s what stands out:

• Hybrid driver configuration: 2 dynamic drivers (8mm + 10mm) + 4 balanced armatures per side.

• Tunable impedance/adaptation: Mode 1 approx 15Ω, Mode 2 approx 27Ω (= the physical dial switches networks).

• Frequency response claimed 10 Hz-40 kHz. Sensitivity ~127 dB/Vrms. What this means: for entry level price you get a quite serious driver count and some flexibility in tuning.

Sound Quality — Detailed

Tonal Balance

The OP.24 is described in reviews as a “light V-shape” or moderate V-shape tuning — that is: bass and treble a bit lifted relative to the mids, at least in one of its modes. It also offers two distinct modes via the dial: Mode 1 (smoother treble, moderate bass) and Mode 2 (boosted bass, more forward treble) depending on your preference. The difference is audible but subtle.

Bass

In Mode 2 you’ll feel the bass more noticeably: mid-bass punch, sub-bass extension that gives tracks weight. Reviewers point out the sub-bass is there and the bass decay is controlled and textured.

However, because it’s a hybrid with armatures covering mids/highs and large dynamics for bass, you might still prefer well-recorded mixes — very sloppy bass recordings may reveal some bleed. But generally the bass is above average for the price.

Midrange

Mids on the OP.24 are slightly recessed compared to the boosted bass/treble, especially in Mode 1. In Mode 2 the mids improve a bit in presence. Vocals are warm and silky, but you might find them a bit behind the bass and treble in the mix if you’re coming from a flat/reference tuned IEM. Reviews say the midrange is “clean and natural for the price.”

So if your focus is vocals/instruments rather than bass-treble “fun,” you may want to check how the mids sit for your preferred music.

Treble

Treble is lively, especially in Mode 2 where the upper mids/lower treble are more forward. The detail retrieval is better than many IEMs at the sub-$100 level, and you will pick up micro-detail. But some caution: the treble can be a little sharp or forward in busy mixes, so if you’re treble sensitive you may want to stay in Mode 1 or choose smooth tips.

In short: treble is strong for the price, but not as refined as top high-end models.

Soundstage & Imaging

For the price bracket, the OP.24 offers a surprising sense of width. Imaging is credible and you can place instruments reasonably. Some reviews minus the vertical height and ultimate openness of high-end IEMs, but given the price it’s good.

Genres & Artists That Work Well

Because the OP.24 has that fun, slightly V-shaped (bass + treble) tuning and a tuning dial, it suits these:

• Pop, mainstream: Adele, The Weeknd, Billie Eilish — great for vocals + bass + production gloss.

• Electronic / dance: mid-bass punch works with Daft Punk, Bonobo, Disclosure.

• Rock / alternative: guitars and vocals get enough presence, though if you’re into ultra-detail jazz/classical you might prefer something more neutral.

• Gaming / multimedia: thanks to good imaging, bass and treble punch, they can be fun for gaming or mixed media usage. (Some reviewers mentioned latency/competitive use though with caveats)

If your playlist is purely acoustic/classical or you want ultra-reference neutrality, you might consider whether the OP.24’s fun tuning matches your taste.

Companion Gear & Fit Notes

Impedance is low (15-27Ω) and sensitivity high, so they drive easily. You can use a smartphone or basic dongle with good results. Using a higher-quality source or clean DAC/amp will still improve the experience (less background noise, more control).

Tips: Because of the dual mode and slightly V signature, tip fit matters. If the bass overwhelms or feels boomy, try foam tips or shallower insertion. Because the cable is decent but not premium for the price, some users upgrade the cable later.If you change mode via the tuning dial, give your ears a few minutes to re-adapt — the difference is subtle but real.

Pros & Cons

Pros:

• 2DD + 4BA driver configuration is ambitious at the price.

• Physical tuning dial gives two tonal options — nice feature.

• Good build and comfort for the cost; easy to drive.

• Detail and imaging above typical budget IEMs.

Cons:

• Mids slightly recessed relative to bass/treble in some modes.

• Treble can be forward, which may cause fatigue for sensitive ears.

• Accessories/cable are basic for the price (no high-end case, etc).

• Tuning dial difference is somewhat subtle — you might hope for more dramatic change.

• If you want ultra-high fidelity / reference neutrality, there are better (more expensive) alternatives.

  
  

Verdict

If I were telling you in a casual chat: “If you’re looking for an IEM under $100 (or closer to $50) that gives you lots of fun, decent technical performance, and a cool feature (that tuning dial) — the ooopusX OP.24 is a great pick. It won’t have the finesse of high-end gear, but for its price it punches well above some peers. Just ensure the tuning and fit match your listening style.”