I got my replacement Dekoni pads today and the entire sound signature is changed. To my ears it's much better now. It reminds me more of my previous Amiron Home headphones. The pads I bought were the
Dekoni Audio Elite Velour Earpads for Beyerdynamic DT Series Headphones - part number: EPZ-DT78990-ELVL. Even though they are for the beyerdynamic DT-series of headphones, they fit perfectly on the T1.2's, and fitting literally takes a minute. There is a seam on them and once fitted, you can rotate the pads so that the seam is at the bottom of the earcup.
They come in a rather nice box:
In order to compare sizes, here's the
stock pads:
And here are the
Dekoni Elite Velour pads fitted to my T1.2's:
As you can see, they are quite a bit thicker than the stock pads, and the memory foam in them is denser than that in the stock pads. One thing I noticed was that the stock pads have no acoustic material covering the opening. The Dekoti ones do.
In terms of sound change, the treble fizz and harshness that I was getting is completely gone now. One downside is that the open and airy nature of the stock pads has also gone. The sound signature is now quite a bit warmer. With the treble suppressed, the mid-bass is more prominent - this is why I am reminded of my Amiron Homes. As some sound suppression is going on, I do have to turn my headphone amp volume up a small amount more. I am running my head amp volume control at the 2 O'Clock position so there isn't a lot of spare headroom left, so I think I will need a much more powerful headphone in the future to get better sound quality.
In terms of fit and comfort, for my (rather large 70mm) ears, the Dekoni pads are a much better fit, and way more comfortable than the stock pads. I was fidgeting about with the stock pads during listening sessions and this detracted from the enjoyment of the music. The Dekoni ones are like pressing a soft pillow against your ears. I think they will be more enjoyable to wear for bedtime listening for 1-3 hours, although I have to get through several evenings of listening to verify this.
So, for me, the plusses outweigh the minuses. I sense a small loss of airiness, clarity and detail, but I gain a more soothing, warmer sound with no annoying treble harshness, and the more comfortable fit is a big advantage. The suppression of the treble is quite noticeable, and possibly a bit too much.
In summary, if you want an open, airy sound with lots of sparkle and detail then stick with the stock pads. If you want a warmer, more bass-led sound with quite a suppression of treble, and supreme comfort, then I recommend the Dekoni Elite Velour pads for the T1.2's.
One last thing, the Dekoni Elite Velour pads add quite a bit of weight to the T1.2's. The stock pads are incredibly lightweight in comparison. As I mostly listen in bed, this increased weight will never be an issue for me. Also, the increased comfort of the Dekoni pads somewhat offsets the increased weight.