@Benny-x it has been a strugle for me to find proper replacement pads. I'd love to hear which pads you used. Most large pads(audeze,akg,hifiman) either have a propriatary locking system or are glued on. In the past I've found just one pad that fits dx1000/dx700, philips sbc hp890.
I'm quite of a pad roller so I'm aware how much the pads can change the sound. It's indeed a thing that many people neglect. On my initial listen I felt that new pads have a bit stronger bass and more recessed highs. Not necessarely a bad thing, considering highs are a bit grainy on dx700/dx1000 and the bass and midrange is where they shine.
I don't have that much time to get into comparing the two, so I did one better. Here are the pads measured.
Differences between the pads are so small that one can blame measurement/positioning of the headphones on the measurement rig. Mostly it is within 3db which is the limit of audible volume change for most people. Also volume is not 100% matched so some differences are sure to occur. Anyway, between the pads the differences are so small that I highly recommed trying a pair. If those chi-fi pads run out getting replacements is once again a trouble.