Amp improvement since 1994?

Interesting question as designing and building a circuit to amplify an audio signal is a fairly simple task. While there have been improvements in parts available as well as improvements in getting amps to react with different speaker designs, the basic principles haven't changed.

Many audiophiles prefer amps designed and built in the 50s and 60s so we know it has been done well for years. I'm interested to see what others have to say.

I don't call it an improvement one day maybe when technology has let them get to use switching frequencies 10 x higher than now, but class D is the only real new technology I can recall.

Everything tube or transistor although bigger, heavier, and better built these days, can date it's base circuitry back to the 1940's 60's and 70's things like Williamson tube designs, and same goes for SS.

Cheers George
Georgelofi

Even class D technology dates back to the late 50s. Although as far as real sonic improvements, those may be dated after 94.