Includes all taxes
>High-Performance Multi-Driver Hybrid IEMs.
>1DD+6BA+1 Passive Radiator+1 Micro Planar Driver Configuration.
>Innovative Adjustable Passive Radiator Design.
>High-Precision 3D-Printed Acoustic Pathways.
>RESInators Micro-Resonance Technology.
>Professionally Designed RLC Network Crossover Correction Design.
>High-Damping Pressure-Balanced Technology.
>Classy Design Inspired by the Echoes of Jupiter.
>True HiFi Acoustic Response, Accurate Full-Range Sound Reproduction.
>Fuller, Grande, Slightly Warm Sound Profile.
>Dual-Bass Modes.
>Ergonomic, Lightweight, & Comfortable Design.
>Easy to Drive.
>Silver-Plated 4N Single-Crystal Copper plus Single-Crystal Copper 6-Strand Cable.
>Impedance: 26Ω±20%.
>Sensitivity: 108dB@1kHz.
>Frequency Response: 10Hz~35kHz.
>Connector Type: 0.78mm 2-pin.
>Termination Plug: 3.5mm or 4.4mm.
AFUL Performer 8S is a step above the previous IEMs in the Performer series. Instead of a traditional DD+BA arrangement, we have a quad-brid setup here on the P8S. Each side is equipped with 9 drivers including one dynamic driver, six high-performance balanced armature drivers, one micro-planar driver, and a dedicated passive radiator driver. This PR driver has an adjustable design where users can switch between closed and open modes.
Unlike the tuning switches or swappable tuning nozzles, the P8S has a unique take on the two-level bass options. The pair has an adjustable passive radiator system where users can use the PR driver in open or closed settings. Closed mode delivers a solid, atmospheric, punchy bass, Open mode packs a deeper, more elastic, and softer bass character. Experience two levels of bass with the P8S.
AFUL’s signature RLC(Resistor, Capacitor, Inductor) crossover technology is implemented to get the best out of the 9-driver setup here on the P8S. The crossover is carefully adjusted to refined the 9-drivers perfectly eliminating resonance peaks and ensuring a smooth, detailed, EST-like treble with wide extensions up to 35kHz.
To further enhance the crossover design, AFUL has featured their own RESInators micro-resonance technology on the P8S. This tech uses ultra-precise 3D-printed micro-resonant channels that correct the non-ideal driver behavior and matches their performance across the frequency band ensuring a highly-coherent sound profile. This significantly improves the overall performance of the set, delivering high-resolution clarity across a wide frequency band.
AFUL has taken design inspiration from “Echoes of Jupiter”, the faceplates feature the swirling storms and cloud bands on the Jupiter’s North Pole. The pair is crafted using medical-grade resin material using high-precision 3D printing technology. The pair is not just visually stunning, but also optimized for great wearing comfort.
AFUL bundles the Performer8S with a high-purity stock cable. It’s a 6-strand, 392-core cable made up of silver-plated 4N single-crystal Copper and single-crystal copper material wire conductors. The cable features 0.78mm 2-pin connectors and is available in 3.5mm or 4.4mm termination plug options.













Q1: Which version represents the standard sound?
A1: The sound with the passive driver closed is considered the standard sound. It is the reference tuning for the P8 upgrade.
A2: Activating the passive driver adds an optional, more entertaining sound signature. It enhances symphonic music, deepens bass, and noticeably boosts impact, somewhat like a supercharged version of the IE900.
A3: We include 10 pairs of replacement no-mark stickers in the package. If you find the stickers inconvenient, you can also use the silicone plugs interchangeably.
A4: Yes. By directly regulating each driver’s operating frequency range, the RLC network effectively suppresses resonance-induced peaks, especially in the high frequencies, allowing balanced armature drivers to deliver a smoother, more natural, electrostatic-like treble response.
A5: No. Performer 8S features a dual-vent design. The bass tuning vent is for low-frequency tuning, while a separate top pressure-relief vent with internal damping balances air pressure between the shell and ear canal and also fine-tunes the bass. Since they are independent acoustic paths, blocking the tuning vent won’t increase ear pressure. It will only affect bass response.
Payment Policy – BILLIONS BIRDS
At BILLIONS BIRDS, we are committed to providing a safe, secure, and seamless payment experience for our customers.
1. Accepted Payment Methods
We accept the following payment options:
Major Credit & Debit Cards (Visa, MasterCard, American Express)
Secure Online Payment Gateways (such as PayPal, Stripe, or other providers available at checkout)
Any additional payment methods displayed during checkout
All payments must be completed in full at the time of purchase.
2. Secure Transactions
All transactions are processed through encrypted and secure payment systems to protect your personal and financial information. We do not store your full payment details on our servers.
3. Currency
Prices are displayed in the currency indicated on the website. If you are purchasing from another country, your bank may apply currency conversion fees.
4. Order Confirmation
Once your payment has been successfully processed, you will receive an order confirmation email containing your purchase details.
5. Failed or Declined Payments
If your payment is declined, please verify your billing information or contact your bank. Orders will only be processed after successful payment confirmation.
6. Fraud Prevention
BILLIONS BIRDS reserves the right to cancel or refuse any order if fraud or unauthorised activity is suspected.
Delivery Policy – BILLIONS BIRDS
At BILLIONS BIRDS, we are dedicated to delivering your orders safely and efficiently.
1. Order Processing
All orders are processed within 1–3 business days after payment confirmation. Orders are not processed or shipped on weekends or public holidays.
2. Shipping Times
Estimated delivery times vary depending on your location:
Domestic Shipping: 3–7 business days
International Shipping: 7–15 business days
Please note that delivery times are estimates and may vary due to customs procedures, carrier delays, weather conditions, or other unforeseen circumstances.
3. Shipping Costs
Shipping fees are calculated at checkout based on your location and selected shipping method. Any customs duties, taxes, or import fees are the customer's responsibility.
4. Tracking Information
Once your order has been shipped, you will receive a confirmation email with tracking details (if available) so you can monitor your package.
5. Delivery Issues
If your order is delayed, lost, or arrives damaged, please contact us within 7 days of the expected delivery date. We will work with the shipping carrier to resolve the issue as quickly as possible.
6. Incorrect Shipping Information
Customers are responsible for providing accurate shipping details at checkout. BILLIONS BIRDS is not responsible for orders shipped to incorrect addresses provided by the customer.
Refund Policy – BILLIONS BIRDS
At BILLIONS BIRDS, customer satisfaction is our top priority. If you are not completely satisfied with your purchase, we’re here to help.
1. Return Eligibility
You may request a return within 14 days of receiving your order. To qualify for a return:
The item must be unused, unworn, and in the same condition as received.
The item must be in its original packaging.
Proof of purchase (order confirmation or receipt) is required.
Certain items may not be eligible for return, including clearance items, gift cards, or personalised/custom products.
2. Non-Refundable Items
The following items are non-refundable:
Final sale or discounted items
Gift cards
Items damaged due to misuse, negligence, or improper care
3. Return Process
To initiate a return, please contact our customer support team with your order number and reason for return. If your return is approved, you will receive instructions for returning the item.
Unless the item is defective or incorrect, customers are responsible for return shipping costs.
4. Refund Processing
Once we receive and inspect your returned item:
We will notify you of the approval or rejection of your refund.
If approved, the refund will be issued to your original payment method within 5–10 business days.
Please note that banks or payment providers may require additional time to process refunds.
5. Damaged or Incorrect Items
If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery and provide clear photos of the product and packaging. We will arrange a replacement or full refund at no additional cost.
6. Late or Missing Refunds
If you have not received your refund:
Check your bank account again.
Contact your credit card company or payment provider.
If the issue persists, don't hesitate to contact our support team for assistance.
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