I find the Technics to be anything but thin and light in its presentation. In fact, it errs ever so on the warm side. Pairing it with the right speakers makes a big difference. It's also is bold and rich sounding with great insight into a recording. One Absolute Sound reviewer on YouTube said it's a taste of the ultra high end at 1/10th the price just for its resolving capabilities.
My old JBL 4319s had Al/Mag tweeter and midrange and no matter the amp, they could wear on you. The sound was big and bold but it was those drivers that took their toll.
All the best,
Nonoise