Peter Wong, is some kind of audiophile God. I've purchased several of his creations to great satisfaction.
Today's great creation is that of the Orpheus SP3000 adapter.
This combines the 3.5 and 2.5 outputs, and then uses a short run of the Orpheus Cable inside of it.
I really did not think this would change the quality of the sound, but I was wrong. The hi-hats and treble are as clear as being there, even with my same old IEMs.
I don't know how it works other than that, but I can confirm it does actually change the sound, seems like more sound information is coming through from the background blackness, and then rings out naturally, again like hearing things in person vs a recording. It sounds pretty incredible.
Also COMPATIBLE with SP3000T, the picture is straight from Peter Wong and Andrew from MusicTeck. I can also confirm these work on the Astell&Kern SE300 as well.