Demo box that compares tube to solid state preamps realtime

[Carl_Huff]

A few years ago in AudioXpress there was an article that was about comparing the output of a tube preamplifier to that of a solid state preamplifier. The design was especially well done. My plan was to add the ability to use external devices for comparison as well. The problem is, I CANNOT FIND THAT SILLY ARTICLE TO SAVE MY LIFE! Could somebody here please help me? I certainly would appreciate it.

Thanks in advance ....

 

[GM]

Hmm, only recall some amp ones:

https://audioxpress.com/article/differences-in-amp-sound-how-do-we-find-the-truth

https://audioxpress.com/article/differences-in-amp-sound-whats-the-truth

https://spectrum.ieee.org/the-cool-sound-of-tubes

Anyway didn't notice it searching AX/tube preamp

 

[Carl_Huff]

The article that I am looking used a 12AE6A. Thank you for trying