B seems to have more of a 'treble' sound while the others seemed more 'flat'
Changing the EQ settings could possibly make them identical.
It's well beyond just an EQ adjustment. The samples sounded very different with the T4 having more nuances and longer samples for sure. I also think the DAC's are quite poor on the S950 which makes sense given its price point. You want more open sound, longer samples, and broader dynamic range, you pony up the big bucks!