Would also love to hear about differences people have heard when using higher end amps / preamps with the rarer, and less obtainable NOS tubes.
I’m currently running a set of first issue Telefunken 7DJ8 and a set of Philips 1955 EL34 metal base in an amp. I am thinking about trying to find a set of unobtainium Siemens CCA or the like, but just not sure if they’re worthwhile if I could find them.
Yes. I’d recommend always buying the most expensive tubes you can. If you spend 1000 dollars per tube you will be able to finally hear the musician’s heartbeats when they were recording your favorite tunes.