Campfire Audio Grand Luna Review:
Campfire Audio has been on quite a run lately. Starting with Supermoon, Astrolith, and now the Grand Luna, it’s clear that applying planar drivers is a strong focus for the brand. Rightfully so, since the community reactions have been very nice, and eventually, Campfire Audio to have a dedicated product line-up featuring planar drivers.
The Grand Luna is a significant product in Campfire’s lineup – not just for its price point, but because it marks the first time Campfire has paired their planar magnetic driver with balanced armature drivers in a hybrid configuration. Their 14mm planar driver has already made appearances in earlier products like the Astrolith, but Grand Luna takes a different direction with it, swapping out the ultra-high tweeter setup for two BA drivers focused on the upper registers. Priced at $1,399, let’s see what that change brings to the table.
Packaging / Accessories
Grand Luna arrives in a compact, dark-themed box dressed with lunar artwork that fits the product’s “Blood Moon” identity. A pull-tab slides the main compartment from the box to reveal the IEMs and cable sitting in a laser-cut foam tray. Lifting the tray uncovers the rest of the accessories, divided into four cutouts.
Included with Grand Luna are the Time Link modular cable, a set of three interchangeable cable plugs (3.5mm, 4.4mm, and USB-C DAC), a hard leather case in blood moon red, silicone eartips in multiple sizes, ultra-clear silicone eartips, a cleaning cloth, and paperwork.
The leather case is one of the nicer included cases from Campfire in recent memory – compact, well-padded, and easy to pocket. The highlight of the package is the modular cable system, which I believe is a first for Campfire. Instead of throwing in two separate cables as they did with Clara, the modular approach covers all three connection scenarios in one clean package. Full details of the included accessories is as follows:
- Grand Luna premium hybrid-design IEM
- Time Link Cable System – high-purity silver & copper blend
- Swappable cable terminations –3.5mm single-ended, 4.4mm balanced, USB-C DAC
- Included high-performance DAC – Cirrus Logic Master HiFi CS43131, 32-bit 384 kHz, DSD 128, 256
- New Compact Leather Magnet Closure Case in ‘Blood Moon’ red
- Breezy Bag Micro two-pocket mesh bag
- Foam Eartips (S, M, L)
- Silicone Eartips (S, M, L)
- High & Clear traction silicone eartips (S, M, L)
- IEM Cleaning Tool
- Microfiber Cleaning Tool
Earpieces & Flame-Treated Faceplates
Grand Luna features a similar form factor and design to the Astrolith, but is slightly different. Nozzle spouts are slightly longer, along with the thicker shell body. Nevertheless, Grand Luna is ergonomically shaped and compact enough, providing a comfortable and secure fit. The shell is 3D-printed and internally dyed a deep red, with a transparent exterior that lets you see through to the driver housing and internal acoustic chambers. It’s a striking visual, and it looks even better in person than in photos.
Capping the faceplates are brushed stainless steel lids that are hand flame-treated in-house, leaving a subtle iridescent finish on the CA logo. It’s a handmade detail that gives the Grand Luna a boutique quality that stands out even among Campfire’s already-premium lineup. The isolation is reasonable for a vented design. The MMCX connectors are Campfire’s custom matrix type – known for being more reliable and durable than standard MMCX.
Big Boy Planars with BA Tweeters
Grand Luna’s driver configuration is a 1 Planar + 2BA hybrid. The 14mm planar magnetic driver takes care of the low and mid frequencies, while two custom, high-frequency-focused balanced armature drivers handle the upper registers. This is a deliberate departure from the Astrolith, which used a micro planar tweeter for the highs – Grand Luna instead relies on BAs for a smoother, less metallic high-frequency character.
The housing uses Campfire’s AAOI (Additive Acoustic Optical Inclusion) technology, which was first introduced with the Astrolith. AAOI is essentially Campfire’s take on precision-engineered acoustic chambers built directly into the housing, designed to shape airflow, resonance, and driver behavior without relying on a traditional passive crossover. The internal chambers are visible through the transparent shell, giving Grand Luna its distinctive layered look.
Stock Cable: Time Link Modular
As mentioned, Grand Luna introduces Campfire’s modular cable system – the Time Link cable. It uses a custom four-pin connector system at the IEM end for the modular swap mechanism, with interchangeable 3.5mm, 4.4mm, and USB-C DAC plugs included. The USB-C module runs on the Cirrus Logic CS43131 chip, supporting 32-bit/384kHz resolution and DSD256 playback.
The stock cable itself is a 4-braid blended copper and silver design. The cable has moderate weight to it, being heavier than Campfire’s Time Stream cables, but nothing to an extreme extent. I’d suspect this is the reason for the hardware parts being plastic rather than metal, as the weight may be overwhelming otherwise. The wires are decently pliable and supple without ear guides, which makes the cable comfortable to handle. Due to its rather weighty nature, the stock cable may not suit those who prefer a weight-free experience. That aside, the modular swap system functions smoothly, and the mechanism feels reliable. Having all three termination options out of the box, including Type-C connection, is very useful and a step in the right direction for Campfire.
Next Page: How does the Grand Luna sound? / In-depth Impressions