ARC LS2 tube life?

Thanks a lot guys!

I looked into the Great Northern site & like the it a lot & will likely take advice/purchase tube from them.

First I need to isolate my system to see what's causeing the H/F loss (at least an octave) as well as lack of air, depth/width of soundstage. I just bought a pr of used Gallo Nucleus Solos this week & hooked up my system after being idle for a few years after selling ML-Sequel II's.
At this point I hope the reason is a worn tube & not a faulty tweeter or something!

A

Thks Marco,

Appreciate your advice!

Will not be able to upgrade LS2 now (perhaps just tube), it's not the weak link by far. Amp is stock Ayre V3.
Desparately need to replace Pioneer PD-52 cd player, add power conditioning & room treatment as well as solving missing h/f problem 1st.
Just saw the Njoe Tjoeb 4000 in Nov Stereophile. Said it (output impedence 170 ohms) need to pair w/pre-amp with input impedence over 10k ohms. Is the LS2's over 10k ohms?

bye, Anton