Fosi Audio i5 Open-Back Planar Magnetic Headphones with 97mm Diaphragm Professional Hifi Monitor Wired Headset For Studio

$978.72

Includes all taxes

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Description





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Feature

Immersive Listening, Pure Original Sound

Experience high-fidelity sound with nano-thin diaphragm and symmetrical magnets. Precision acoustics deliver high-resolution, low-distortion sound for live-performance realism

97mm Ultra-Large Diaphragm

97mm Nano-Level driver at 2μm thickness reveals microscopic details. Sputtered silver alloy coating enhances clarity while ensuring long-term sonic consistency and durability

Ergonomic Design, Long-Lasting Comfort

Memory metal headband with multi-axis pivoting earcups adapts instantly. Silicone sliders enable micro-adjustments. Breathable skin-friendly earpads eliminate fatigue during extended sessions

Refined Craftsmanship

Handcrafted walnut wood chambers paired with CNC-milled aluminum frame. Genuine sheepskin headband and signature S-design accents exude understated luxury and timeless sophistication

Precision Magnetic Control

44 N50 neodymium magnets ensure fast transient response. Acoustically transparent open-back grille minimizes resonance for expansive, holographic soundstage with studio-grade accuracy

Model Name: i5
Device Type :Full-size Open-back Wired Headphones
Transducer Type :Planar Magnetic Drivers
Maximum Sound Pressure Level :>120 dB SPL
Frequency Response :10Hz - 50kHz
THD :< 1% @ 100 dB SPL
Sensitivity :98dB/mW @ 1kHz
Impedance :28Ω
Recommended Power :> 250mW
Minimum Recommended Power: > 100mW
Weight 550g

QA

Q1:Are the I5 headphones currently being sold the old version or the new version?
 
YES.All I5 headphones currently available for sale are the new version. The new I5 headphones feature a sealing ring, which optimizes the low-frequency response of the I5 headphones.
 
 
 
Q2:What precautions should be taken when using I5 headphones?
 
A. Avoid compressing the ear pads hard.
B. Do not press or poke the interior of the ear pads with fingers to prevent damage to its planar driver.
C. Do not wear metal earrings or similar items while using the i5, as it contains magnets.
D. Do not use speaker amplifiers to drive the i5.
 
 
 
Q3:What are the advantages of the 4.4 mm jack on the I5 headphones compared to the 3.5 mm jack?
 
4.4 mm = balanced, more power, better stereo separation, less noise, sturdier plug.
 
3.5 mm = unbalanced (single-ended), more universal, but limited in power and noise rejection.








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Delivery Policy

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.

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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

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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