@cbrez - I ended up purchasing a used Gryphon 120 which does 240 watts into 4 ohms. It was at that moment that I realized the full potential of the Dynaudio Heritage Special speakers. They are fantastic speakers and I just feel they really open up when driven with more power.
My former 87db 4ohm Totem Acoustic speakers with the original Dynaudio drivers were very similar in how they responded to the right type of power amplification.
I had tried several different lower power SS and Tube amps with them. Eventually arrived at 200wpc 8ohm / 320wpc 4ohm with a dual mono dual torroidal transformers - A true 75 amp mosfet Class AB solid state amplifier.
The smaller 2-way speakers literally came alive and sounded quite different with a more robust amplifier. Smoother highs, better silky midrange, bottom end was all there. Real iron and current driving them. No subwoofers, not necessary at all.
Like you experienced - it really showed what the speakers were capable of being. All the bases were covered at low, medium, high volume level listening. There was never a need to turn them up, they sounded very nice at low-med levels once they were being driven by this amplifier.