I have the Technics SU-G700M2 and it lacks for.....nothing. I have it paired with the matching SL-G700 SACD player and need not look anywhere else. Best sound I've had in my system.
Not lean or bright. Took a while for the SACD player to grow some hair (about 6 weeks) and the lower mids and bass out of my JBL 4319 monitors is rich, taut, full and detailed, complimenting the rest of the range.
I have some of the most natural sounding music I've heard, so it must be system dependent. Sorry it didn't work out for you.
All the best,
Nonoise