I think all agree that Mr. Pass is an excellent designer. Not suggesting you should change anything, but modern c-j amplifiers are just that bit more linear. Some miss the golden sound, while most enjoy the expanded accuracy. And, don't you miss that something that comes with tube sound? My P350 is excellent even today but I always come back to the LP140s. It's a personal choice and a great deal depends on our speaker choices as well. I'm a Wilson guy with a new pair of Yvettes.