Fosi Audio i5 Planar Magnetic Headphones Now Live on Kickstarter – Loved at CanJam, Ready for You!

[Fosi Audio]

Hello Head-Fiers,

We’re thrilled to announce that the Fosi Audio i5 planar magnetic headphones, which gained widespread acclaim at CanJam Hong Kong, CanJam NYC, and AXPONA 2025, are now officially live on Kickstarter. Let's kick it off!

Campaign Dates: April 22 – June 1

Click the banner below to back it!

What Makes the i5 So Special?​

At every show we brought it to, the i5 left listeners surprised by how effortlessly comfortable it is over long sessions, and most importantly—how rich, clean, and immersive the sound is.

Whether you’re in it for the music or the gear, the i5 was built with real audiophile expectations in mind—featuring a 97mm diaphragm, N50 neodymium magnet array, walnut wood frame, and genuine suede leather headband that speaks as much to the ear as to the eye.

Of course, most importantly, we’re offering the best possible deals for our first batch of i5 backers!

Exclusive Rewards for Early Backers​

As a thank-you to the Head-Fi and audio community, we’re offering:

Super Early Bird Rewards – Up to 30% Off!
Available for the first 300 backers of both the Basic and Kit reward tiers

​

Real Reviews Coming Soon​

We’ve already partnered with a number of respected reviewers and community members to provide objective impressions and honest feedback on the i5. We’ll be updating this thread with review links, video overviews, and impressions—stay tuned right here.
(And yes, you’re welcome to ask questions directly—we’ll be active in this thread!)

And One More Thing… ​

We’ve also prepared something extra for our backers—a lovely little audio visualizer is available for purchase in the Kickstarter campaign. It had been loved many tons of listeners throughout AXPONA 2025.

P.S. For users who joined the i5 deposit campaign, please make sure to check the email we sent you — it contains your exclusive “Super Early Bird Fast-Track” access!


Below, let's read some reviews from influencers and users:

to be continued...

 

[Sword of Damocles]

Did you guys receive the early deposit email from Fosi, as I see nothing?

 

[Kallbo]

Did you guys receive the early deposit email from Fosi, as I see nothing?

No

 

[Sword of Damocles]

@Fosi Audio Can you confirm that we should be getting that email? Maybe the timing wasn't right with the campaign launch?

 

[Fosi Audio]

Something is wrong with the EDM system. Please wait till you receive the email we send you.

Did you guys receive the early deposit email from Fosi, as I see nothing?

 

[Sword of Damocles]

Worked now, thanks!

 

[Kallbo]

Same, for me.

 

[AsciiJC]

Interesting comparison!

Not sure that's how it works but, thats cool I guess.

 

[RudeWolf]

Have a reviewer pair here. For 5XX$, they're good, but there are competitors from Focal and HarmonicDyne (Baroque). For the early bird, 3XX$ price, they're a steal.

 

[streetbeat]

@Fosi Audio may I cast your attention to K7 Amp giveaway please?
https://www.head-fi.org/threads/fos...eaway-event-for-head-fi-members.975650/page-6
There's plenty of users (incl. myself) who actually didn't receive their units Thank you in advance.

 

[Roll]

P.S. For users who joined the i5 deposit campaign, please make sure to check the email we sent you — it contains your exclusive “Super Early Bird Fast-Track” access!

You will receive an email from Marke Ting

Title of email:
It's Time! The Fosi Audio I5 is Live – Claim Your Reward Now

 

[Sword of Damocles]

Super* Review already has FR measurements available based on his IEC 711 & KB006X rig. Open back planars usually measure quite consistently, so this is most likely what we are getting, unless his review unit is somehow different.

Gives me Yamaha YH-5000SE / ABYSS / Hifiman Audivina vibes. Velcro pads clearly don't seal very well either.

 

[Kallbo]

Autsch……..

 

[Metal-Fi]

Interesting comparison!

Not sure that's how it works but, thats cool I guess.

Hmm, kind of a "bold" comparison...

 

[RudeWolf]

Super* Review already has FR measurements available based on his IEC 711 & KB006X rig. Open back planars usually measure quite consistently, so this is most likely what we are getting, unless his review unit is somehow different.



Gives me Yamaha YH-5000SE / ABYSS / Hifiman Audivina vibes. Velcro pads clearly don't seal very well either.

Interesting. I'm getting way more sub-bass than that.