With the room size at 20x25 and high ceiling, Dynaudio Confidence 5 will need a much larger amp than Levinson 27. Something like Levinson 333 or 336 would be closer. Maybe two monoblocks would be even better.
The problem is that even with the monster amp, bass extension is still around 30-40Hz.
The problem is that even with the monster amp, bass extension is still around 30-40Hz.