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Product Snapshot
Description
AFUL Performer 8S – 9-Driver Hybrid IEM with Adjustable Bass Control
The AFUL Performer 8S is a next-generation flagship hybrid in-ear monitor built for audiophiles who want reference-level detail with personalized bass control. Featuring an industry-first 9-driver hybrid architecture, the Performer 8S combines the strengths of dynamic, balanced armature, passive radiator, and micro planar drivers to deliver an exceptionally resolving, versatile, and customizable sound signature.
At its core is a 1 Dynamic Driver for deep and textured sub-bass, 6 Balanced Armature drivers for transparent mids and precise imaging, a dedicated Passive Radiator for extended low-frequency authority, and a Micro Planar driver for ultra-fast, airy treble reproduction up to 40kHz. What truly sets the Performer 8S apart is AFUL’s adjustable passive radiator tuning system, allowing listeners to fine-tune bass quantity instantly—adapting the sound to different genres, moods, and listening environments.
Crafted from medical-grade translucent resin, the Performer 8S offers a lightweight yet premium ergonomic design that ensures long-hour comfort and excellent noise isolation. A detachable 0.78mm 2-pin silver-plated OFC cable ensures clean signal transmission and future upgrade flexibility. Whether you listen to classical, jazz, rock, EDM, or modern pop, the AFUL Performer 8S delivers flagship-class technical performance with unmatched tuning versatility.
Sound Signature & Performance
Bass
The dynamic driver paired with the adjustable passive radiator produces bass that is deep, controlled, and highly tunable. From fast and neutral low-end to powerful, visceral slam, the Performer 8S adapts effortlessly to your music preferences.
Midrange
Six balanced armature drivers deliver natural, transparent mids with outstanding instrument separation. Vocals remain lifelike, expressive, and perfectly positioned without coloration.
Treble
The micro planar driver ensures fast, detailed, and fatigue-free treble with excellent air and sparkle. Extension up to 40kHz reveals micro-details, room ambience, and high-frequency texture with ease.
Soundstage & Imaging
Expect a wide, layered, and holographic soundstage with precise imaging and depth. Complex mixes remain clean, controlled, and engaging even at higher volumes.
Adjustable Bass System – One IEM, Multiple Sound Profiles
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Neutral Mode – Tight, accurate bass ideal for classical, jazz, and acoustic recordings
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Balanced Mode – Warm, versatile tuning suitable for most genres
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Enhanced Mode – Impactful, powerful bass for EDM, hip-hop, and modern pop
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Tool-Free Switching – Instantly change tuning without cable swaps or accessories
Why Choose the AFUL Performer 8S?
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9-driver hybrid design with unmatched driver diversity
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Adjustable bass tuning for true sound personalization
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Flagship-level resolution, speed, and dynamics
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Premium resin shells with excellent comfort
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Easy to drive with phones, DAPs, and amplifiers
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Upgrade-ready 0.78mm 2-pin detachable cable
Technical Specifications
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Driver Configuration: 1DD + 6BA + 1PR + 1 Micro Planar
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Total Drivers per Side: 9
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Frequency Response: 10Hz – 40kHz
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Impedance: 16Ω ±15% (@1kHz)
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Sensitivity: 110dB/mW (@1kHz)
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THD: ≤1% (@1kHz, 94dB SPL)
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Cable Connector: 0.78mm 2-Pin (Detachable)
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Cable Length: 1.2m
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Cable Material: Silver-Plated OFC
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Plug Type: 3.5mm Single-Ended
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Shell Material: Medical-Grade Resin
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Weight: ~6g per earpiece
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Noise Isolation: Up to -28dB
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Bass Adjustment: Passive Radiator Tuning Switch
What’s in the Box
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AFUL Performer 8S IEMs (1 Pair)
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Detachable 0.78mm 2-Pin Cable
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Silicone Ear Tips (S / M / L)
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Premium Carrying Case
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User Manual
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Warranty Card
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This can indeed be an endgame purchase. It ticks all the boxes well and ensures a great fit and amazing audio quality
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Pairing this Harman Target Version with a Samsung A17 playing Apple Music and FLAC files and Fiio X1 DAP as a secondary source with FLAC files. When tuned to give preference to Mids as i prefer to hear the voices more than anything else, this comes out as a sweet sounding combination and tracks like Racy Chapmans Fast Car and Massive Attacks Teardrop shine beautifully. The Castor Pros are best listened at about 40% volume and and infact they do actually sound amazing at a high volume for bass heavy tracks such as EDM but for Trance and Rock the cymbals and snare drums sound better at 40%. This pair of iems and the combo sounds like money well spent so far and next i want to try analytical IEMs like the 7Hz. Thanks to the Audio Store for the rushed delivery.
Great purchase... excellent product
Good Product as expected
Worth every penny! This is not for bassheads as it lacks just a bit on the bass department, but the separation is awesome and the sound stage is also huge. Awesome for gaming as well! (Apex Legends, Arc Raiders, PUBG)
This is the replacement for my purchase of moon drop dsp chu2 which I bought in aug 2025 i don't know how it got damaged from last it stopped working on left side buds and after a few days mic also stopped working and i forgot to claim the warranty for it . So find this spare cable very helpful since I love these IEMS for real Tq AUDIO STORETEAM FOR THE smooth delivery
Great job on packing of the product. As a gamer I can say that, for fps games like PUBG , CS2 etc., Castor Pro is the best in under ₹2000
I recently bought this and am incredibly impressed with it. The build quality feels solid and premium right out of the box.
When it comes to performance, the amplification is fantastic—it delivers a clear, noticeable boost to the audio power and volume without sacrificing clarity. It is also incredibly easy to use; completely plug-and-play with zero hassle.
An awesome bonus is the inclusion of the Type-A to Type-C dongle/adapter. It makes it incredibly versatile to connect to different devices right away without needing to buy extra accessories.
Overall, it's a great purchase and definitely worth the money. If you are on the fence, just get it!
As an all rounder it fits my taste quite well,the only problem it really has is the male vocals being a bit recessed (not terribly recessed if you use vocal eartips),they are a tad bit overpriced seemingly,divine planar might be better,but for people looking for a fun entry into iem's,it's worth the price (some people say it's included DAC isn't enough,it works well enough as a temporary solution,yet to test if a dac makes a big difference or not).
Unsure if this is how most iem's are but the cable felt a tad bit short.
I had never used an IEM before, so this was my very first experience and I was genuinely impressed. As someone who loves music, I can confidently say this is one of the best investments you can make for audio quality. The sound is exceptional and absolutely worth the price.
To get the best possible audio experience, I would also recommend pairing it with a good-quality DAC, as it significantly enhances the overall output. ....
This is the most balanced sounding IEM I've used in this price. I am using the Type C variant, and I haven't experienced any issue regarding the playback whatsoever. It is equipped with the DAC chip CX31993, which is found on the dedicated DACs around the price of 1K. The cable is also a 4-core silver plated copper one, with really nice build quality. These are also really responsive to EQ Settings, tweaking the audio balance using a 10 or 31 band EQ makes the experience even more versatile.
The only cons I have noticed are regarding the in-box ear tips, I didn't find them to be very comfortable, so I had switch them with some other ear tips. Although, the metal built of the IEMs give them a really premium feeling, the glossy surface is extremely prone to scratches and they still get scratched even after using cautiously.
It is good but could be a bit sharp sometimes may be balanced by EQ. But one problem in my type C unit, after 3 days it stop sound out of nowhere, while listening music, or watching movie/yt. Have to plug out plug in to get the audio back.
This is a magical DAC, I don’t believe ki isne mere headphones main jaan daal di ho
Really the quality of aurora ultra is out of the box , literally if you never use an iem and experience first time you feel actual music. Aurora ultra give life best experience.
This is only possible because of the audio that my first experience and the audio store surve there best to just create my best experience thanks a lot for protective, timely delivery and
Again thanks for giving that service and seamless experience to the team
AUDIOCULAR DAC Recommend asome sound quality it's pushing
Aswome experience with kz castor pro harman target Bass edition I never heard that quality of
Bass My second experience with iem aswome
