I have tried all combos of drivers and cups. Th900 with 500 cups are full of bass. The biodyna driver moves freely and really pushes air, however without a measurement rig, it’s difficult for me to say whether sonically accurate or not.

The 500rp cups are as open as it gets. Very little resistance honestly. The original tuning is more for reflections that air management.

Pics of some cups , and Fostex. https://imgur.com/a/gyiG4qx

Been gone from the forums for a good while. Need to catch up. Anyways... PM me. When I was going through the whole open back project I acquired 4 sets of th500rp cups. May have some to sell.

Right so I really don't have pictures and if I do id have to dig them out of last years picture backups but here is how I started and where I ended up. here we go: - I first got TH600s and did stage 1 lawton mods and pads - Then I got TH500RPs, and took those Aluminum open cups and put them on...

Thanks. One thing also that I did later was swapping the planar driver itself. So the original 500RP used a mk2 driver, and I swapped in a mk3, and it was a huge improvement. Kind of like the improvements from the t50rp mk2 to mk3

So that was my initial project. I was working on those headphones for a while... what I did instead of putting biodynamic drivers into the TH500rp frame.. I put the TH500cups on TH600s. Basically the same thing. And the aluminum open cups screw right on. It sounded insane. Different to...

Hey guys not sure if this is a repost but has anyone seen this?   http://fostexsound.ru/products/headband/th-900-black-limited-edition/   Its supposed to be a limited edition th900 with gloss black cups....   Looks pretty damn nice.

I've got Lawton pads on mine and I love them. Nice sound difference, and comfort is much improved to my ears YMMV

OK for someone for hats never heard then yggy... what can I expect? Better or different sound? Sorry but I'm kind of an amp rookie

Hmmm this Modi multibit talk has me wondering about selling my Magni 2 u and upgrading. Will I hear difference going from Mac Pro usb to multibit. Files are ITunes ALAC.

No i actually haven't gotten around to tuning anymore since i don't have measurements rigs. I'm working on piecing one together before ago further because the sound changes enough to not really know where the measurements are going by ear. at least to my novice ear.

Dibs! You have PM

OK got it any quantifiable difference among them?

So overall, which driver would be more desirable... TH600 or THX00? Really wasn't aware of that magnets difference but sure enough I just noticed it. I read somewhere that the TH600 magnets were the TH900 rejects. Not sure how true that is.

Yea been trying to find a set second hand and it's been difficult. I even bought a set of TH500RPs to get the pads you have on the THX00, but now my TH500RPs are without pads and I find myself having to swap back and forth. So I needed a second set. Anyways thanks and I'll be on the lookout.

Ok so any chance you would do a drop on the pads for the TH-X00? Or even an individual sale type of thing for these? Really want to buy a pair of those pads. Original ones.... not eBay Chinese knockoffs.

Looks very nice, and I hope at one point I get to try them. I like that they are straight up telling us no more variations, and limited quantity due to sourcing. Really hope someone at some point sells just the cups. I would buy all 3 cups.

Hey guys just a friendly reminder that if anyone wants to sell their stock TH-X00 pads, I've for instant paypal for you!!

I thought they were different too but they are not. I have tried eveything to stop it from rattling idk what's wrong but it honestly sounds like a blown speaker. I know that's hard to imagine and I didn't over power them or anything. Just a bad driver I guess... Anyways I ordered T50RP MK3 and...

Hey guys just want to get some thoughts on something I'm working on. I have Fostex TH500RP, which as many of you know are basically a T50RP mk2 driver in an open setup and with a hole cut out of the back driver fabric. But lately the right channel has gotten very rattly with the bass and I...

if you give them the music they like you won't have a problem with them. i enjoy mine very much for recorded and vocal music. Classical is also very good. and like I've read before, the more power you give them the better. the get louder but besides louder the SQ improves. IMO. Vocals are very...

Yep. I was actually working on this project for a bit. Completely reversible. No mods. Screw in, screw out. TH600 with open back TH500RP cups. I did half and half so people can see that it was indeed a TH600. Like you said they are bass cannons. Been trying to locate or borrow a measurement...

hmmm I was only mentioning exclusivity regarding the Massdrop sales, but good to know Foster is open to OEM them so easily. I personally love everything about the design.   I know the power of group buying allows lower prices, and thats obviously a benefit that Massdrop was passing on to its...