Just copy-pasting from my Moon 100D review. It could help some if their T50RPs sound like “exploded speakers” with higher-end DACs.
I got it. This is why it doesn’t pair perfectly with T50RPs “sealed” by leather or leather-like pads. Lows are so powerful and thick, sealed planar closed-backs try to push too much air at too many frequencies and can sound “like exploded speakers”. I’m using the Shure 1540 pads right now, not a problem at all. At the price of more sibilance but also way more clarity.
Be aware I’ve done this to remove treble and sibilance already.