Hey everyone, after my last post I have been working hard to make all the modifications people have been asking for.

2-Pin 0.78:

Porta Pro/KPH40: https://www.printables.com/model/1713333-2-pin-improved-koss-porta-pro-2-pin-mod

KSC75: https://www.printables.com/model/1713346-2-pin-improved-koss-ksc75-2-pin-mod

MMCX:

Porta Pro/KPH40: https://www.printables.com/model/1690916-mmcx-improved-koss-porta-prokph40-mmcx-mod

KSC75: https://www.printables.com/model/1675349-mmcx-improved-koss-ksc75-mmcx-mod

Flower Grill

For all these models, there is a custom flower grill (Kramer mod) too. It improves the bass on the KSC75, from my personal experience. https://www.printables.com/model/1412670-flower-grill-for-koss-headphones-kramer-mod

Each of these mods are free, will always be free, and you are completely free to make any modifications you wish to make.

Edit: also, if anyone feels like selling kits, go ahead. The license has been chosen carefully to allow this. I will not be doing any commerce.

If you don't have a 3d printer, there are services like jlc3dp and pcbway which can print this for you at affordable prices.

Have a fine day, reddit ❤️

I noticed the headset version has a screw where the mic attaches, and now I’m curious if all Porta Pros share the same structure or if it’s just a manufacturing shortcut.

I found a broken headset version locally and wondered if the mic could be transplanted to a regular Porta Pro.

They're just starting to roll in, but put together a little list of some of the early unboxing/reactions below I've seen for anyone interested. More unboxings vids will be rolling in with full reviews in the coming weeks. I believe we sent out a bout 30 review samples. We send samples to a full array of reviewers from casual listeners to audiophiles who will measure and go over every last detail.

Master Marslander
https://www.youtube.com/shorts/-Zq8vnUX-VI

2NA Tech
https://www.youtube.com/watch?v=9a5ALxUyTeM

Skeeb23
https://www.youtube.com/shorts/bZlmlJs1Ahw

Wave Chapelle
https://www.instagram.com/p/DXrwukIjqdN/

Just dropped the unboxing video of the upcoming A/550 if you're interested seeing what's included, and get your first hands on look outside of marketing photos.

If you signed up for the weekly A/550 emails at Koss.com/a550-signup, be sure to check your inbox Tuesday for this week’s unboxing video 🫡

Also reviewers have received samples and unboxing videos are already starting to trickle in on various social media platforms with full reviews most likely in the coming week(s) if you’re looking for videos and reviews from anyone not Koss.

https://www.instagram.com/reel/DXrwukIjqdN/?igsh=emNuMHVlYmwweGNx

https://youtube.com/shorts/bZlmlJs1Ahw?si=uN44T4G26q3w9IMZ

https://x.com/eatuna247/status/2050317831644811384?s=46

* just a friendly reminder we do not pay anyone to review our products all options are their own

i installed mmcx connectors on my kph40s but theres a bit of a wobble whenever the cable is inserted which causes the audio to cut out, any advice on this?

I saw this on google years ago and i really want to replicate it with the paint and also the wires.

it seems like a great addition, as ive seen once on youtube that a guy ripped off the cable off the PCB when they were working out on a treadmill, so having a detachable cable seems like a great safety feature for the headphone.

I havent been able to find any youtube video on wiring and nor do i know where to buy any of these things.

I can definitely solder effectively however.

if you guys have any yt vids i would be delighted.

also i live outside of the US if that matters

SOURCE OF IMAGE: Custom Modded/Painted Koss KSC75 Giveaway | Den-Fi.com

user u/zerousen

Hey everyone, Martin here from Koss Headphones!

Some of you might know we've launched a new line of FREE 3D Print-Ready accessories like the Porta Pro Stand and KSC75 Dock.

Today we dropped the file for the 3D Print-Ready KSC75 Display Stand.

Download this free, 3D print-ready stand designed specifically for Koss KSC75 models and showcase your legendary KSC75 on a desk, shelf, or studio setup.

Precision-measured to fit both Standard and Oversized cushions, this 3D printed stand cradles KSC75 securely while helping maintain it's shape and comfort as well as hides the cord inside the base.

Simply click “Add to Cart” and proceed to “Checkout.” After completing your order, you’ll receive an email with a download link to print your elegant, space-saving solution designed to keep your KSC75 protected and presentation-ready.

*Not for resale or redistribution

This is the second time the MMCX leads have twisted off from the connector in my HUNDO adapters.

Any recommendations to prevent this? Fingernail polish on the threads?

✌️

God I love these things. 🫠

I was close to rejecting the Porta Pro because they sounded a tad too muddy for my liking. Thank god I still had the KSC75 clips left and they really helped lifting the sound of the PP drivers. It might even be my favorite Koss combo.