Compared to Rolling Force Cosmos (Review link)
Featuring Ag-Au-Pt triple alloy conductors, Cosmos is a limited-edition flagship cable released by Rolling Force before Fontier. Priced about a kilo-buck higher, the Frontier features quad alloy conductors, comprised of Ag-Au-Pt-Pd. While I expected the actual sound differences to be rather minimal between these two, that wasn’t the case. Starting with the bass, Frontier’s sounds a lot more agile, textured, and cleaner. The punches are much more powerful with stronger dynamics. The extension and depth perception are significant enough to give a noticeable downgrade feel as I swap from Fontier to Cosmos.
A similar experience happens for the mids too; Frontier’s vocals are a lot more detailed, spatial, and lively. Frontier abundantly pours in with details and upper-end sparkles, creating a higher ceiling and open-ended feel compared to Cosmos. Overall, Frontier has a more W-shaped sound signature, as well as an all-rounder successor of Cosmos in most aspects. The staging is also more immersive and extensive, pushing the IEM’s performance to the limits that Cosmos couldn’t quite reach.
Compared to PW Audio Meet Agains (Review link)
Meet Agains is PW Audio’s flagship cable built on the Orpheus shielding structure, using Level 3 pure copper conductors. It’s warm, musical, and an all-rounder in nature – known for adding body, richness, and fuller mids to practically any IEM while keeping the sound naturally musical. Both are quite similar in overall sound signature and tonal balance, yet there are some noticeable differences. Frontier sounds a lot more buttery and lush in tone, whereas Meet Agains keeps it relatively more neutral and plainer.
The texture is also more polished or “oily”, adding moisture and smoothness to the micro details. Since Frontier is slightly more boosted in analyticity than Meet Agains, this aids upper-end transparency without causing fatigue. Meet Agains also has a very well-polished finish, but it’s more matte than Frontier’s. Frontier has a neutral-warm background, whereas I’d consider Meet Agains to be the same, except it has a much quieter, darker background – almost pitch black. The technicality and overall performance are just about the same for these two, with the more analytical and W-shaped-sounding one being Frontier, while the more neutral, PW-classic-sounding one being Meet Agains.
Compared to Nostalgia Audio Guinevere (Review link)
While comparing Fontier with Cosmos seems natural, personally, the most anticipated comparison is between Fontier and Guinevere – Nostalgia Audio’s limited-edition flagship cable. Also featuring quad-alloy conductors, Guinevere is the world’s first to apply such a complicated combination of wire materials. With both these cables side by side, there are bigger differences than what’s expected from the spec sheets. Guinevere has a bassier, warmer, and darker sound signature. The sound is more up-close with stronger sub-bass. The body of the sound is thicker, with rounder edges and smoother, musically bold nuance. The timbre is warmer and darker than Frontier, desiring a more solemn and weightier tone. Upper ends are smoother and calmer.
On the other hand, Frontier takes a tighter control over the sub-bass and reverbs – more balanced and neutral in tuning overall. Mids and highs also highlight more transparency and an open-ended field. Guinevere is the warm, bass-oriented one, while Frontier has a strong W-shaped sound signature. As mentioned in our review, Guinvere embodies the sound signature of Nostalgia Audio Pendragon – a bold, floor-speaker-like sound that maximizes musicality or what I’d like to call “musical aura”. Frontier is more versatile for bringing out the IEM performance without altering the original signature.
Fontier, To be Pushing to the Limits
Spending almost $2,800 on an IEM cable will always raise eyebrows, and being limited to 68 units worldwide makes it even more exclusive a decision. But for those who’ve been in the upgrade cable hobby long enough to know how wide the ceiling can go when an IEM is paired with the right cable, Frontier won’t simply stop at justifying the purchase, but instead will make it a valuable investment in your IEM setup.
Rolling Force has managed to combine two of the rarest alloy configurations available in a single cable – not as a spec exercise, but with outstanding performance and tuning kept in mind – which is consistently and clearly represented across different TOTL IEMs. Its all-rounder, balanced nature, paired with an enormous technical boost, just makes everything better for the IEM’s sound. For those considering a serious flagship cable investment, Frontier should belong in the discussion without question. It suits those who want a strong all-rounder that brings the best out of their summit-fi IEMs without directing the tuning in a particular direction. Needless to say, if you’ve loved what Cosmos did and wondered how far Rolling Force could take it beyond that, I’d highly recommend demoing the Frontier before it’s gone forever.
