i have recently purchased a Cayan Tube amp (A88T) and have paired it with a pair of dynaudio 52SE speakers. i was told by a friend that basically the 52SE is an inefficient speaket and should not be driven by valve amps. My valve amp uses the bigger KT88 tubes and is rated at 40 watts RMS. Is what my friend saying correct? he feels that the SE should be driven by more powerful high current amps. pls advse.