I haven’t spent any real time with AFUL’s earlier Performer models, so the AFUL Performer 8S is my first proper introduction to the series. Because of that, I went into this review without any strong expectations about how it should sound based on past versions. It’s also worth clearing something up straight away: this is the Performer 8S, not the Performer 8. It isn’t just a renamed model, but a revised version with its own tuning and its own place in the lineup.

The 8S is aimed at listeners who want a more technically capable and more balanced-sounding IEM without jumping into flagship prices. Using a complex driver array consisting of one dynamic driver, six balanced armatures, a passive radiator and a micro planar driver, the AFUL Performer 8S is priced at $369 USD and targets the upper midrange segment of the IEM market.

Disclaimer: This sample was provided by HiFiGo for an honest review. All observations and opinions here are my own, based on my experience with the product.

AFUL Performer 8S

Design

AFUL says the Performer 8S is inspired by “Echoes of Jupiter”, with faceplates meant to resemble the swirling clouds around the planet’s north pole. In reality, I think they look beautiful. They’re filled with bands of colour that sparkle and shift slightly depending on the light. The shells are 3D-printed from medical-grade resin and the build quality is excellent.

The shells are reasonably small despite the eight drivers packed inside and, for my ears, they fit perfectly. Passive isolation is also very good, so I didn’t feel the need to push the volume higher than usual.

There is one odd design choice, though. The nozzles don’t have a lip, so some eartips don’t hold on very well. A couple of times, the tips stayed in my ears when I took the IEMs out. It’s a strange oversight, and not something I’d expect at this price or from a brand with as much experience as AFUL.

The P8S has a vent just behind the 2-pin sockets, which AFUL calls the “adjustable passive radiator system”. You can choose to leave the vents open or closed using either the included circular stickers or rubber plugs. The system is designed to give users the ability to increase or tighten the bass.

The cable is thick, feels good in the hand and doesn’t tangle easily. It isn’t modular, which is a bit disappointing, but you can choose either 3.5mm or 4.4mm when ordering. It’s not a deal-breaker, but it does mean you need to decide up front which one you want.

Sound

I mainly used the AFUL SnowyNight, HiBy R6 III (2025) and D&A Alpha Pro for testing. The Performer 8S is easy to drive and can reach high volumes easily with any source.

To my ears, the Performer 8S is tuned in a fairly safe and restrained way. It doesn’t really push the bass or treble forward, and instead keeps the focus on a slightly forward midrange. I found it easy enough to listen to over long sessions, but it also isn’t the kind of tuning that immediately grabs your attention, unless extreme clarity is your thing.

Bass

Sub-bass has a slight lift and is quite satisfying, but the midrange is more impressive technically than it is in terms of impact. With the vent closed, I found the low end sounded firmer and a bit more controlled, while opening it adds some body and makes notes feel slightly more elastic. Texture and definition are both good, and it never spills into the midrange.

That said, I did find myself wanting a bit more punch at times. Kick drums and bass lines sound clean and well shaped, but they don’t always hit with much force, and on some tracks the bass can come across as a little polite rather than physical.

Midrange

The midrange is slightly forward, but in terms of tone, it comes across as fairly neutral to me. Vocals are clear and easy to follow, though they don’t have quite the density or weight that makes them feel truly full-bodied. There is enough warmth to stop things sounding cold, but note weight in the mids feels on the lighter side overall.

On simpler tracks, this isn’t much of an issue, but with busier mixes I noticed the midrange can start to sound a little congested. When there’s a lot going on at once, instruments and vocals don’t separate as cleanly as I’d like, and the presentation can feel slightly compressed through the middle.

Treble

The treble doesn’t try to win you over with sparkle, but I found it clean, controlled and easy to live with over long sessions. It sounds quick and tidy, which suits cymbals and upper harmonics well, and there’s good extension without it drifting into brightness. It isn’t especially flashy, but it still comes across as open and reasonably airy rather than dark or closed-in. I also didn’t run into any sibilance issues, even with brighter recordings.

Soundstage & Technicalities

The P8S creates a moderately sized soundstage, with slightly above-average width and strong left-to-right separation. Sounds can reach just beyond the ears, and instrument separation is excellent, which helps a lot with layering and imaging. Detail retrieval is solid rather than class-leading, but overall resolution is very good.

Comparisons

Punch Audio Martilo ($329 USD)

The AFUL Performer 8S and the Punch Audio Martillo offer quite different sound profiles, despite having similar shell sizes. While the Martillo is priced lower at $329, it delivers significantly more sub-bass impact, with about five decibels of extra lift compared to the Performer 8S. The Martillo also has more forward mid-bass, which provides male vocals and string instruments with extra fullness and body.

In contrast, the Performer 8S has a tighter and more controlled bass, though it can sometimes feel a bit polite or lacking in physical force. The Martillo is more contoured and V-shaped, with more lift in the upper midrange and lower treble, which generally results in better detail retrieval on most tracks. However, the Performer 8S has a wider sound stage with better left-to-right stereo separation.

ZiiGaat Horizon ($329 USD)

When comparing the AFUL Performer 8S to the ZiiGaat Horizon, the Horizon is a more V-shaped and contoured alternative that comes in at the $329 price point. It offers more sub-bass extension and a fuller lower midrange than the Performer 8S.

The Horizon also features more lift in the pinna gain area and the upper treble, giving it an edge in detail retrieval, though it might be a bit much for those sensitive to high frequencies. The Performer 8S remains the safer option for treble sensitivity and provides a tighter, more textured bass compared to the thicker low end on the Horizon. While the Performer 8S is technically proficient with strong imaging, the Horizon presents a slightly larger overall stage area.

Verdict

Overall, the Performer 8S left me with a positive impression, even if it didn’t completely win me over on a sonic level. I appreciate the balanced, inoffensive tuning, and there’s no denying that the build quality and overall design are a strong part of the package. The shells look and feel amazing, and it’s the kind of earphone that gives a wow effect on the first listen.

It’s also very easy to drive, which makes it a good match for portable sources without needing anything powerful behind it. I do think it’s worth spending some time looking at alternatives in this price range, especially if you’re after more impact in the bass or a fuller midrange presentation.