Has anyone had the honour of comparing Mark Levinson's 333.5 (modified 333)
against Mark Levinson's 336?

Apart from the 336 having more power at lower ohms, how does an upgraded
333.5 compare sonically at different frequencies?

I hear that the 333.5 really excels and if so, does it really warrant
spending the extra money going to a 336?

Cheers
Mark