What would your "perfect speaker" sound like.

It would sound effortless. Have tremendous, thunderous low frequency response. It would have extremely extended HF response, the ability to reproduce all harmonics of any instrument well beyond audibility. 

It would greatly exceed all parameters. Flat frequency response from 10Hz to 40Hz, with a slight dip from 2K to 5K. It would have the capability of playing at twice the volume I would ever ask of it with virtually no distortion.   

There ya go. Just get ya some of them Wavetouches and your set. Problem solved.  Only natural speaker in the whole wide world! 

Below my video/posts (2 years ago) sound harsh. As an update, recent videos sound better.

Chris De Burgh - Lady In Red, Wavetouch audio live

Katie Melua - Wonderful life, Wavetouch audio live recording

Anette Askvik - "Liberty", Wavetouch audio, Live recording

Alex/Wavetouch audio

my wife would say when I start playing them: "wow that was worth it dear. Do they have more?"

@parkergetdean 

Good one! Those clearly do not exist.