03-26-09: RhanechakThat's the answer
I was using a Prima Luna Prologue 1
to the unsatisfactory bass from the Dynaudio speakers.
The Prologue 1 is not enough amp to drive the Dynaudio speakers. The R3 are a
better match.
I'm doubtful any tube amp would produce deep, controlled, balanced bass the
Dynaudio 72.

