Weird, mk2 have no resistor, and neither have SR-5 (whose drivers are identical in both appearance and FR to mk3, I measured my stash of NBs yesterday including an SR-5 to mk2 transplant).

very similar to ECR-500 :)

Also curious about the T50RPmk4, and given current preordes for the SR-X1 (which is for me *the* announcement of the year) will be shipped in July, I also plan on getting the Fostex as soon as it comes out.

Tried the search function and I don't think an SR-Xmk2 driver has been posted already. Here it is, taken today during the transplant of SR-5 drivers in the SR-X frame (SR-X drivers need recoating...). Note the wires connected via screws, the SR-5 uses tabs (pic at the end). driver rear front...

Nothing new, but had two of my 3 favorite headphones out and took a picture: the SR-Xmk3 I bought from Japan, who have SR-5 white cable and sound different from all my other SR-X (they are mids cannons), who knows which driver they have inside; and the TDS-15 which for my tastes are the best out...

59400 Yen

Strain reliefs are also different. Black strain reliefs were shortened when I recabled but you can still see the difference The TDS-15 react very well to damping density changes. Their FR kind of reminds me of the Stax L500 (except for upper treble of course), here is the current lighter...

Crappy group shot of the two TDS-15 I got from Micon: the gray ones arrived today and after a quick pad swap they are sounding as good as the black, with some minor differences probably due to the slightly different damping. The TDS-15 have grown on me, I really really like their sound...

Absolutely agree, even though I have a soft spot for small supra orthos and find the TDS-15 very nice from a design, practicality PoV as they fold very small for easy carrying. I would never trade this for a larger enclosure, especially since the only thing you can buy now are circum, especially...

Absolutely no problem, the more info the better. I just like them a lot despite the small soundstage. YMMV 😀

Well, mines have great bass so either there's a huge variation, or they need small cups and flat pads...

Bought a pair from Micon (and TDS-16/16, TDS-16/40, TDS-7), smooth transaction and the phones sound fantastic! Measurements are in the ortho thread.

FInally had some time to try the TDS-15 I received from @micon. I bought them again after having had a pair 10+ years ago as I did not do them justice at the time. Just replacing the terrible stock pads is enough to make them pretty good in comparison to all my other planars. Next is a recable...

I tried bidding on the Y! JP pair last week, and dropped out fairly quickly as the price was going up. This is awesome and I'm really glad you got a pair and are sharing this!

Here it is, it can probably be done better but this was a simple way to test it. I've seen it in some headphones done with felt integral to the pads (Audeze EL-8?) or even thick adhesive foam (Oppo PM-3). This is the effect on FR of just adding the mids lens (again, I use a flat plate so...