Conrad-Johnson is an interesting mention throughout this thread. They were pioneers in the finest tube sound fifty years ago. Clearly, by all reports they still make some of the best sounding tube equipment using modern circuits and parts. And, thanks to the foresight of the original owners, they are still there standing behind the original equipment. Very few, if any of the company’s mentioned can claim that quality and consistency. Do they add $20K to an amplifier in custom metalwork so the owner can point to his shiny stuff with the useless meters? Nope, just good sounding tube amplifiers. Quite an enviable record.