I changed from a 60 watt pioneer amp to a 60 watt high current NAD an year back.My speakers were clipping with the pioneer and it was struggling and I was convinced that I would need an amp with atleast double the power to drive my wharfedales.I home demoed a 100 watt yamaha and a nakamichi 100 watt reciever and both were struggling with the 86 db floorstanders.But my dealer friend convinced me to try out the NADC 320 BEE and C350 (A 60 WATT amp) at home.Man, what a eye opener it was ! I couldn't believe it ! The difference in quality was awesome and this puny little wonder NAD was driving my speakers effortlessly.
So all watts are not created equally.It is the design that matters.HIGH CURRENT is one of the design FACTORS that makes a BIG positive difference.