i5 Replacement Earpads(no ventilation holes) for i5 Planar Magnetic Headphones

The non-perforated pads for the Fosi i5 headphones fit perfectly." From a sonic point of view I did not notice any particular differences. It is true that I made comparisons with the other tunnels before the end of the break-in, but the sound did not seem to change alternating between the two pads.
The only thing I can highlight is the high temperature of the ears when using headphones in the heat of this summer. But the same thing happens with perforated pads.

Great to see that replacement earpads are included in the package as well as two good quality cables, one 4.4 and one 3.5mm. The replacement earpads without any perforations seem to add a little more bass.

Happy to have them but haven’t tried out yet. I’m very happy with the headphones overall though
Regards
Emmett

What seemed like pointless feedback changed when I saw the words "no perforations". This got me thinking. What could this possibly achieve. Apart from sweaty ears that is? It had to be an improvement to the sound but what. The ring update to prevent bass leakage had me think that bass might permeate the ear cushions through the hundreds of perforations, which make the cushions slightly more transparent to lower frequencies. Only one way to find out, swap the ear cushions/pads. Bingo! A subtle increase in bass power and unless I'm imagining it, a slightly deeper bass extension. Not a huge difference but definitely notable. There may be a tiny trade off around 850hz where certain tones on some tracks sound a little bit more shouty or harsh. Those frequencies being more likely to be reflected toward the ear, instead of being partly absorbed by the perforations. This could increase treble harmonics very slightly improving transients. Overall an excellent upgrade. Well thought through. Can the i5 be improved? You just did improve them...

I purchased the Fosi Audio i5 Headphones complete with the replacemnet earpads via the Kick Staert campaign and have thoroughly enjoyed using them. With the new ear pads not only do I have the pleasure of listening to the sparkling highs and revcealing midtowns, but can also really appreciate the deep but natural bass. Thoroughly recommended.