PAGS
Super Member
I've been using Genalex Gold Lion KT77 power tubes in lieu of EL34s in my Line Magnetic 211IA since I got it.
I recently noticed a slight hum coming from the speakers when no music was playing. Have to put ear right in front of the speaker to hear it, and it's not noticable when music is playing. (For all I know it's always been there.) Thinking it might be one of the preamp tubes, I replaced the 12au7 and 12ax7 tubes wih Gold Lions. Well...the hum is still there, but the new tubes sound great, even without burn-in. NOS be damned.
I recently noticed a slight hum coming from the speakers when no music was playing. Have to put ear right in front of the speaker to hear it, and it's not noticable when music is playing. (For all I know it's always been there.) Thinking it might be one of the preamp tubes, I replaced the 12au7 and 12ax7 tubes wih Gold Lions. Well...the hum is still there, but the new tubes sound great, even without burn-in. NOS be damned.