Lime Ears Terra VS Campfire Audio Alien Brain

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Build and presentation hit boutique vibes: a machined-aluminum shell with a clever nozzle dip that grips tips securely, a flat 2-pin socket with a top filter, and smooth finishing that feels premium in ear. The accessory set fits the price—SpinFit W1 and foam tips, cleaner, pouch—and the leatherette puck case looks simple but feels surprisingly durable. The stock 4.4 mm cable is aesthetically pleasing yet a bit stiff, with a loose chin slider; red/blue markers make orientation easy.

Tonally, Terra skews brighter with a touch of sharpness up top, bringing strong micro-detail and air while keeping a tasteful, impactful bass shelf. The 6-driver hybrid (including a 7 mm titanium DD for lows) delivers confident technicalities: fast attacks, clean separation, and a wide-open stage. FR observations show a gradual bass rise, good treble extension, and a mid-treble lift (around the 8 k region) that adds sparkle and excitement but can read hot for sensitive listeners.

Against peers, Terra tracks a refined “Harman-ish” contour with extra energy, feeling more dynamic and lively than several mid/high-tier alternatives while keeping mids even and uncluttered. Trade-offs exist: a hint of metallic timbre, occasional upper-mid glare, and imaging that can soften at micro level; yet the overall mix of bass quality, clarity, and stage makes music engaging. At $1,200, the Polish boutique package reads as a serious, distinctive choice—highly recommendable if a brighter tilt and vivid treble are on the wish list.

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Alien Brain arrives as a single-DD + 4BA hybrid around $1,000 with a truly peculiar shell: the rounded, “alien cortex” faceplate is magnetic, uses MMCX, and can be tricky to seat. The unboxing is lavish—two cables (including 4.4 mm), a compact magnetic leather case, a USB-C DAC/amp, foams plus “sticky” tips, cleaning tools, and extras. Fit is the hurdle; tip-rolling is essential, but once positioned correctly, comfort and seal fall into place.

Tonally, this set pursues a balanced, all-rounder tuning with a near-ideal bass shelf, lively but controlled upper mids, and sparkly yet composed treble. There’s punch and detail without drifting into fatigue; extension is strong, but staging isn’t the most expansive and note weight isn’t “thumpy”—this isn’t a bass-head cannon, more a clean, grounded presentation. The FR shows a touch of 1 kHz energy and smooth ripples through presence/air that favor natural timbre over hyper-etched brilliance, making it a long-session, non-fatiguing listen.

Versus Campfire’s own lineup, it’s far more normalized than the colorful Trifecta, better extended than the warm Axion, and closer in poise to Moon Rover but with a bit more bass and refinement. Compared to peers like Dunu Glacier or DA Mecca, Alien Brain trades V-shaped excitement for cohesive neutrality, and avoids the upper-mid glare that can scare off listeners. Net result: a strong recommendation for those who can manage the fit and want a high-end Campfire that does something new—not the classic house warmth, not sterile flatness, but a realistic, well-rounded signature with broad appeal.

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Positioned as Lime Ears’ entry-level model at around €1,100 / $1,200, Terra makes a strong first impression with premium build quality and shimmering glass faceplates, plus a well-done puck case and full tip set. Practical niggles show up fast: the stock cable is stiff and microphonic, and the chin slider is almost useless. The long, wide nozzle pushes comfort toward “okay” rather than great; shorter tips (Spring-style) help stabilize the fit. Aesthetics and craftsmanship feel boutique; ergonomics and accessories, less so.

Sonically, Terra riffs on a Harman-ish curve—sub-bass lift, slightly thin mids, and a brighter upper-mid/lower-treble for a clean, contrasty, clinical clarity. Imaging separation and stage width are strong with decent depth, but vocals can get edgy/wet, cymbals lean splashy rather than weighty, and overall timbre skews a touch artificial; bass is articulate yet not especially meaty. Versus peers, 64 Audio U4s sounds warmer, bassier with more treble weight (at the cost of some separation), while Dunu Glacier hits harder with denser bass and a smoother top end. The takeaway: good sound, gorgeous build, but not a value standout—Terra is best chosen for the craft, look, and brand story, with performance judged a solid 3/5 at the price.