FiiO FT5 Open-Back Planar Magnetic Headphones
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FiiO FT5 Open-Back Planar Magnetic Headphones
Overview
The FiiO FT5 is an open-back, wired over-ear headphone with a large 90mm planar magnetic driver. It was FiiO's first planar headphone, built for listeners who want the detail, wide soundstage and rich bass of a full-size planar, but with enough sensitivity to run from portable players as well as desktop amps.
The driver uses a PAR diaphragm only about 6μm thick, made with a 28nm chip-scale process, carrying aluminum alloy coils. Each driver has 20 N52 neodymium magnets with flux density up to 1.5T, 11 on the inside and 9 on the outside, so the diaphragm is balanced between both sets for consistent movement and low distortion. That combination gives a sensitivity of 110dB/Vrms (96dB/mW) at 36 ohms, high for a planar of this size, while still handling up to 2000mW from a powerful amp. The open-back housing and tuned grille help create a wide, spacious soundstage.
The shell is magnesium aluminum alloy, which FiiO chose because it's lighter than aluminum and resists driver vibration better than plastic, keeping the FT5 to about 456g. Suede pads come installed and protein leather pads are in the box. A 1.5m cable with 392 silver-plated monocrystalline copper wires uses swappable 3.5mm and 4.4mm plugs, with 6.35mm and XLR-4 adapters, a leather storage case and a velvet bag.
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The FT5 is a good fit if you want full-size planar sound without being tied to one desk. Its high sensitivity means a capable portable player or dongle can drive it, and its 2000mW power handling gives you room to grow into a desktop amp later. The 4.4mm plug comes installed, so swap to the 3.5mm plug for single-ended sources, or use the XLR-4 adapter with a 4-pin balanced amp. Being open-back, it's best in a quiet room.
More Info
Why the FiiO FT5 Stands Out
90mm Planar Magnetic Driver
Large driver for detail, scale and rich bass.
6μm PAR Diaphragm
Ultra-thin film made with a 28nm chip-scale process.
20 N52 Magnets per Driver
Balanced inner and outer magnets for low distortion.
High Sensitivity
110dB/Vrms and 36 ohms, easy for a full-size planar.
Magnesium Aluminum Alloy
Lighter than aluminum and resists driver vibration.
Flexible Connections
Swappable 3.5mm/4.4mm plugs with 6.35mm and XLR-4 adapters.
Buyer's Guide
Who It's For
- The Planar Step-Up: Wants a full-size 90mm planar without a big amp.
- The Home Listener: Has a quiet room for open-back sound.
- The Desktop Builder: Wants 2000mW headroom and an XLR-4 option for later.
How It Compares
Compared with the FiiO FT1 Pro, the FT5 adds magnesium aluminum alloy construction, two earpad sets, 2000mW power handling and a swappable-plug cable with XLR-4 adapter. The FT1 Pro is lighter at about 374g and comes with two separate cables. Both are open-back and easy to drive for planar headphones.
FiiO FT5 Open-Back Planar Magnetic Headphones Specifications
| General Information | |
|---|---|
| Model | FiiO FT5 |
| Brand | FiiO |
| Product Type | Open-back planar magnetic over-ear headphone, wired |
| Audio | |
| Driver | 90mm planar magnetic |
| Diaphragm | PAR, approx. 6μm, aluminum alloy coils |
| Magnets | 20 N52 neodymium per driver (11 inner, 9 outer), up to 1.5T |
| Frequency Response | 7Hz to 40kHz |
| Impedance | 36 ohm |
| Sensitivity | 110dB/Vrms @ 1kHz, 96dB/mW @ 1kHz |
| Max Power Input | 2000mW |
| Cable | |
| Cable | 392 wires, high-purity silver-plated monocrystalline copper |
| Connector | Dual 3.5mm on headphone end |
| Plugs | Swappable 3.5mm and 4.4mm (4.4mm installed) |
| Adapters | XLR-4 to 4.4mm, 6.35mm to 3.5mm |
| Length | About 1.5m |
| Physical Specifications | |
| Construction | Magnesium aluminum alloy |
| Earpads | Suede (installed) and protein leather |
| Clamping Force | 4.0N ± 0.3N |
| Weight | About 456g (excluding cable) |
| In the Box | |
| Included | FT5 headphones, cable, 3.5mm and 4.4mm plugs, 6.35mm adapter, XLR-4 adapter, leather storage case, velvet bag, protein leather earpads, suede earpads, user manual |
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