Fort Ears Mefisto VS Fir Audio RN6

Youtube Video Summary

Fir Audio RN6 brings a six-driver recipe and a limited-edition flair to the tour, dressed in satin black aluminum with a sapphire-glass faceplate and that signature grill exposing the Kinetic Bass dynamic. The stock cable behaves like a less-stiff Code 23, build feels solid and low-profile, and comfort clicks once the right tips are locked in. Priced at an eye-watering $3,300 and capped at 300 units, the RN6 aims squarely at “Stratos-Fi” territory.

On tuning, the RN6 plays it balanced: bass has punch and some rumble but is the tamest of its siblings, not delivering the full “feel-it” effect promised by Kinetic Bass—especially versus NE4 and the poster-child XE6. The midrange is clean with a touch of warmth, pushing vocals center stage while keeping instruments neatly spaced with plenty of air. Treble is energetic, sparkly, and crisp, lifting detail and openness, but may bite for treble-sensitive listeners given the lighter low-end masking. Technical chops are where it shines—imaging, layering, and a spherical sense of stage width/depth make parts easy to pinpoint without turning clinical; it’s revealing yet still musical. Versus Neon 4, this is the more detail-forward, vocal/treble-emphasized choice, though a little extra sub-bass weight would sweeten the deal. It’s trivially easy to drive. As a package, RN6 sits a step above Neon 4 on presentation and refinement, but the “gotta-have-it” factor isn’t unassailable at this price, with alternatives offering similar flavor at lower tiers. Still, for those craving a clean, airy, vocal-focused flagship with strong technicalities, this is a compelling—if costly—ticket.