A bit late to the Fostex game, but it looks like I'll be getting my first set (TH-X00 Mahogany). I've got a big head (which is good for these cans, from what I understand), but I also have big ears (I've heard the stock pads make these feel more "on ear" than "over ear" -- I prefer the latter). Do Dekoni pads offer more "room"? How much do they alter the sound? And I've heard mixed thoughts on pad swapping and/or the attentuation ring. Any feedback?
Dekoni pads (at least the ones I've tried) are no improvement in comfort over stock...opening is actually slightly smaller than stock. I have big ears and the Dekoni's are no-go for me, both in comfort and sound. ZMF Ori or Yaxi 'leather' pads with custom attenuators would be my two preferred pads for my Purpleheart (other than the Jmoney V3 which is my favorite but is not an option due to not being made since many years ago...). I've posted it before, but below are my thoughts on different pads I've tried, specifically with the Purplehearts:
Brainwavz HM5 Hybrids (with custom attenuator) - see Dekoni Premium sheepskin for sound, for comfort they are better than any Dekoni or the stock pads.
Dekoni Premium Sheepskin (with Dekoni attenuator) - More muffled than stock with about almost same detail, bass similar but slightly more boomy with the attenuation rings. Mids more recessed, highs about same. Less comfortable than stock pads - actually have a smaller opening than stock.
Dekoni Th900 sheepskin (with Dekoni attenuator) - Less issue with muffledness, but reduction in the bass and just not that dynamic sounding. Thin pads as well, the headphone will clamp less than with the stock pads... loosest fitting pad I've tried have to be careful , tilt your head and they could fall off. The earholes are round and small in ID , so worse comfort than the Dekoni Premium sheepskins.
Denon AH-D2000 - Sounds similar to stock TH-X00 pads, but better as there is a little less bloom to the bass and slight improvement in detail/finese. Comfort improved from stock, but not as good as Jmoney V3, Shure, Yaxi, or ZMF pads
Jmoney V3 (with custom attenuator) - You want a rich, musical sounding experience with great deep reaching and hard hitting bass that is also more detailed and tighter than stock, these are the pads. They are THE pads for a Purpleheart version, only problem is they are unicorns that are impossible to find... simply don't exist anymore. Mids are more forward than stock and the highs have great energy yet don't cross the line. Comfort is very good, but the ZMF and Yaxi pads are better in that regard.
Lawton Audio Angle pads - While it has great sound quality technicalities, it is absolutely the wrong pad for the TH-X00 unless you hate the stock bass. It pretty much destroys the stock bass feel...loses much impact and overall bass presence. It is a highly detailed sounding pad, but it ruins the TH-X00 in the process. You might as well get an Audio Technica openback if you want that kind of sound. Comfort is surprisingly not that great either...the 'foam' material is stiff yet light and it fits weird on the head. Jmoney V3 , Shure, Yaxi, and ZMF pads are more comfortable. It also one of the most expensive pads for a TH-X00.
Shure 1540 (with custom attenuator) - EXTREME V profile with the treble extremely piercing and the bass beyond a bloated mess, mids nearly absent sounding being drowned out from both ends. Comfort is pretty good though, only behind the Jmoney, Yaxi, and ZMF pads.
Shure 1840 (with custom attenuator) - Noticeably better than the 1540 pads, much less V but still not suited for TH-X00 duty. Comfort about same as 1540 pads.
Yaxi Alcantara TH900/610 (with custom attenuator) - A more even and relaxed neutral presentation than any other pad I've tried. Tames down the highs and bass, mids about same as stock. A little more neutal and balanced than the ZMF Ori suede, along with being more laid back. Very comfortable pads, at least as comfortable as the ZMF Ori.
Yaxi 'Leather' TH900/610 - (with custom attenuator) - Synthetic leather pad that is more inline with the ZMF Ori Sheepskin sound, but a little more empasized and fuller sound. Very comfortable pads though the Alcantara version is a little more comfortable.
ZMF Ori sheepskin (with custom attenuator) - Best currently available pad I've tried on the TH-X00. Better clarity and details than most other pads, the suede version bests it here. Bass level while less than stock is still nice and impactful, and integrates better with the mids than any other pad.
ZMF Ori Suede (with custom attenuator) - The most balanced pad I've tried for the TH-X00. Less bass impact than the sheepskin version, mids are more forward as are highs. Detail and clarity/resolution is the highest I've heard. Very dynamic sounding and It's more cold sounding than the sheepskin version. Comfort like that of the sheepskin version.