It's Time To Change ARC SP-11 Tubes When.....


I bought this preamp about 3-4 years ago with brand new tubes and have not used it a lot.

Lately, however, I have been leaving it on 24/7.

(Maybe I am imagining things, but I would say my system sounds dramatically smoother when I leave the amps on.)

In the 24/7 mode, how frequently would you recommend changing the preamp's tubes?

When these tubes begin to deteriorate, what are the clues?

More noise? Changes to soundstage? Less detail?

I have a new set waiting in the box from ARC. Sounds pretty good to me now, but wondering if it should be even better.

Thanks.
cwlondon

Showing 1 response by tonythetaxman

OOPS......... Wasn't thinking correct (or spelling correctly). Pre's have an average 5,000 hours, not 2,000.... so...... 5000 divided by 35 = 208 days, or 7 months......

Sorry about that.