Seems you have a mismatch between speakers and amp. (At least for your tastes anyway.)
Try different speakers or a different amp. From what you say, something is not warm enough for you...
"Personally, I prefer the vocals to ebb slightly and the midrange to have a tad more warmth."
Looking at the WHF review of the Pulse they seem to concur...
This low-end leanness tends to shine even more light on the midrange, and the Leema's treatment of vocalists can quite easily shift from eloquent and expressive to right-in-yer-face." Maybe you need an Arcam amp or something like a Yamaha A-S1000 to smooth out the edges a bit. I don't think wire is going to fix things.