I A/B listened to WM1A (3.02) and the T01 both on balanced out and they sound remarkably similar. Coming from listening to a AK Kann Cube, I was surprised to have to go back and forth a few times just to nitpick a few differences. Mostly what you’d expect though as the 1A has a bit smoother and warmer presentation, more detail and depth in the mids, and more noticeable midbass presence. T01 has better extension on both ends, more transparent and wider treble presentation, and subbass sounds tighter. These differences were really small using my K10 and AG, but YMMV with your IEMs.