Are future improvements in Amp/PreAmps slowing to a crawl?

@inna 

Why would a respected tube amp designer want to play with something very different?

To see what is possible.

Nelson Pass sold a kit very briefly that employed an output transistor known as a Static Induction Transistor or SIT. This was and so far is the only transistor type ever made that had the linearity of triodes and even had a soft clipping characteristic- so it should be possible using them to make a solid state amp that sounds exactly like a tube amp. Sony made them back in the 1970s for their Vfet amps. Nelson made a kit using them and you can bet that I wanted to know what that sounded like so I bought a kit.

Why would you not? is more the question!

Love your innovative attitude Ralph!

Ralph,

I love your innovative attitude as well,And greatly look forward to your class D design.

I really enjoyed the Sit2 amp but I like my Diy sit that is push pull that uses nos Sony Vfet's.How could I not.

What we need is some new transistors directly designed for audio amplifiers and not other applications.I have no Idea what that would be but I'm sure Nelson would.

Kenny.

Ralph,

I love your innovative attitude as well,And greatly look forward to your class D design.

I really enjoyed the Sit2 amp but I like my Diy sit that is push pull that uses nos Sony Vfet's.How could I not.

What we need is some new transistors directly designed for audio amplifiers and not other applications.I have no Idea what that would be but I'm sure Nelson would.

Kenny.

Then, Ralph, I have a suggestion. Why don't you design a hybrid integrated amp at the level of Ypsilon or beyond with a great phono stage? And not $25k one.