Dan Clark Audio
Dan Clark Audio EXPANSE Planar Magnetic Open Headphones
$6,499.00
Free CA Shipping
In Stock
Fosi Audio i5 Open-Back Planar Magnetic Headphones
$799.00
Limited launch offer: includes a bonus 4.4mm cable.
Canadian Shipping Details
We offer free shipping in Canada on most items when an order totals $99 or more before tax. Some exceptions apply; click here for our full shipping policy.
Estimated free shipping transit time
- Greater Toronto Area: 1-2 business days
- Rest of Ontario: 2-3 business days
- Quebec: 2-3 business days
- Maritimes, Manitoba: 3-4 business days
- Alberta & Saskatchewan: 4-5 business days
- British Columbia: 5-6 business days
- Territories: 6-10 business days
Express options available at checkout. Orders dispatch next business day.
Toronto Store Pickup
Select in-store pickup at checkout and collect your order from our store in Toronto.
Find our entrance on Bay Street, near Charles Street West. We also have a pickup area in the Manulife Centre parking garage. Click here for directions. Before coming to the store, please wait for a confirmation email indicating your order is ready for pickup.
⚠️ No Returns on Headphones Once Opened
Buy with confidence, backed by Price Protection: if our advertised price goes down within 30 days of your purchase, contact us and we'll refund the difference.
For hygienic reasons, there are no returns on headphones and earphones once opened.
All in-stock headphones are available for personal demonstration in-store. We encourage you to try before buying to ensure satisfactory sound, fit, and functionality.
Click here for our full return policy.
If an item is defective upon receipt, please notify us within 30 days of purchase so we can arrange an exchange. For issues following 30 days, we will work with you and the manufacturer within the scope of each brand’s warranty and service policies.
Description
Fosi Audio i5
Open-Back Planar Magnetic Headphones
Democratizing Planar Sound
The i5 was born from our mission to make planar magnetic headphones more accessible — without compromising on sound quality, comfort, or design. Over a year of in-house development and acoustic tuning led to a headphone that delivers exceptional clarity, low distortion, and lifelike detail.
Immersive Listening, Pure Original Sound: Experience studio-grade audio fidelity with nano-thin diaphragm and stealth magnets. Precision acoustics deliver high-resolution, low-distortion sound for live-performance realism.
97mm Ultra-Large Diaphragm: Industry-leading 97mm driver at 2μm thickness reveals microscopic details. Magnetron-sputtered silver alloy coating enhances clarity while ensuring long-term sonic consistency and durability.
Ergonomic Design, Long-Lasting Comfort: Memory-steel headband with multi-axis pivoting earcups adapts instantly. Silicone sliders enable micro-adjustments. Breathable protein leather ear pads 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 razor-sharp transients. Acoustically transparent open-back grille minimizes resonance for expansive, holographic soundstage with studio-grade accuracy.
About i5
The Fosi Audio I5 is an open-air Planar Magnetic headphone. They feature a diaphragm no less than 97mm in diameter, offering a wide soundstage. Each driver incorporates a double array of balanced Neodymium N50 magnets for precise, stable diaphragm vibration. This greatly reduces any form of distortion for a clear, authentic sound reproduction. The earcup structure is made of CNC-machined aluminum, combining robustness and pleasing aesthetics. Silky pads and a leather headband complete the structure, providing optimum wearing comfort. With its 28 ohm impedance and 98dB sensitivity, the I5 is relatively easy to drive, although it will require a good amplifier capable of delivering over 250-500mW of power. In addition, its dynamic range from 10Hz to 50kHz offers the most immersive listening experience. The package is completed by a detachable audiophile-quality 3.5mm jack cable with 6.35mm jack adapter for compatibility with the majority of HiFi equipment available on the market.
What's in the box?
- i5 Headphone
- 6.35mm Adaptor
- 3.5mm Cable
- User Manual
Specifications
Product type: Headphone
Headphone type: Circum-aural open-back
Diaphragm: Planar Magnetic
Max. SPL: ≥ 120dBSPL
Frequency response: 10Hz-50kHz
Sensibility: 98dB/mW @ 1kHz
Nominal impedance: 28 ohm
Recommended driving power: ≥ 500mW
Recommended minimum power: 100mW
Detachable cable: Yes
Cable length 1.5m
Cable conductor material: OFC 5N silver-plated copper
Headphone connector: 2x Jack 3.5mm mono
Cable termination: Jack 3.5mm stereo
For hygienic reasons, there are no returns on headphones once opened.
All in-stock headphones are available for personal demonstration in-store. We encourage you to try before buying to ensure satisfactory sound, fit, and functionality.
If an item is defective upon receipt, please notify us within 30 days of purchase so we can arrange an exchange. For issues following 30 days, we will work with you and the manufacturer within the scope of each brand’s warranty and service policies.
Specs
Dimensions
About Fosi Audio
You May Also Like
Browse these similar products.
$2,799.00
Dan Clark Audio
Dan Clark Audio AEON 2 Open Planar Magnetic Headphones
$1,499.00
Dan Clark Audio
Dan Clark Audio Noire XO Planar Magnetic Open Headphones
$2,249.00
$999.00
Personal Attention, Expert Advice
We’re here to answer your questions and help you make the right choice.
Service Department
Our advisers and technicians are standing by to assist after your purchase.
