OK, here's my first take after only a couple of days' break-in (maybe 10-12 hours of music time):
- treble is significantly better; simultaneously more air & detail, but w/LESS glare. Amazing, like an electrostat with balls.
- definitely more overall ease & detail throughout the spectrum
- my 18 watt amps, which admittedly have always belied their modest power rating, now have seemingly unlimited power & dynamic authority (still using 8 ohm taps, will experiment w/16 ohm taps shortly). Compression is simply not on the menu.
- at a loss to explain this, but perceived bass level is higher at same settings on subs (likely greater clarity in lower range of mid horn, which goes down to 170 Hz).
As things open up more over the next few weeks (?), will post further impressions.