To faithfully reproduce the subtle dynamics of music in a natural and organic way, Campfire Audio has adopted a rare and innovative driver configuration for Grand Luna:
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A 14mm planar magnetic driver handles the full-range signal, utilizing its large diaphragm and lightning-fast transient response to create a clear, layered low-end image with authority and articulation. With a frequency response reaching as low as 5Hz, it brings true presence to bass instruments.
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Positioned near the nozzle are two balanced armature drivers, each enhanced with Campfire’s proprietary T.A.E.C. (Tuned Acoustic Expansion Chamber) technology. This resonant design allows the BAs to project a refined and airy mid-high performance with enhanced clarity and spatial openness — all without the use of traditional sound tubes.
The synergy between these drivers results in a sound that is detailed yet smooth, analytical yet musical — a rare balance that reflects Campfire’s tuning mastery.
To deliver a fit reminiscent of custom in-ear monitors, Grand Luna features a shell crafted from AAOI light-cured polymer. This advanced material is not only lightweight and durable but also beautifully transparent, revealing the precision-engineered internals beneath. Combined with Campfire’s extensive ear shape database, the shell offers exceptional ergonomic comfort and seal — as if molded just for you.
Grand Luna comes equipped with a high-end 4-wire cable, utilizing:
- 2 strands of pure silver
- 2 strands of pure copper
- 24 AWG gauge
This hybrid conductor design enhances both warmth and resolution, allowing subtle musical textures to shine through while maintaining a natural tone. The cable terminates in MMCX connectors for easy swapping and secure fit.
Grand Luna continues Campfire’s tradition of building highly efficient, easy-to-drive IEMs. To ensure seamless pairing with a wide range of devices, the cable features a modular plug system, offering:
- 3.5mm (unbalanced)
- 4.4mm (balanced)
- USB-C with built-in DAC chip (supports up to 32-bit decoding)
This allows users — especially those streaming from smartphones — to enjoy Grand Luna's full sonic potential without the need for additional gear.
With its high-resolution driver system, Grand Luna delivers an expansive soundstage and remarkable instrument separation. Bass guitars and jazz drums are rendered with precision and warmth, retaining speed and clarity even in fast-paced passages. Vocals, meanwhile, are presented forward with rich articulation and emotional nuance.
Every element — from the tight kick of a double-foot drum to the shimmer of cymbals — is faithfully reproduced, staying true to Campfire Audio’s pursuit of sonic authenticity.
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