Hello All
I've had a little time to listen and compare my II+ and II++. I used the Mullards and the Ediswans on both amps.
First of all, it seems like everything is tighter, the length of each note has shortened a little and notes do not run into each other as much. The bass has improved and has become stronger. Everything sounds clearer too.
It sounds to me that the focus of the sound seem to have shifted to slightly lower frequency, with the lower mids being more prominent whereas in the II+, it is the higher mids that is more prominent.
I think because of the combination of these 2 things, others have reported that it sounds less "tubey". The tubey sound seems to be there, just gone down in frequecy.
Another thing I have noticed is that the Ediswan tubes actually sound better with the LDII++. The Mullard tubes seem to increase the lower frequency a little too much especially with the tighter highs, at least more than my liking. I think I'll stick to the Ediswan tubes for now.
Its only been a day, I will continue and report back soon again!