When to replace 6550c on ARC VT 100 III


When should I replace the 6550c on ARC VT-100 III?
The unit is a little over 2yr old and is used often.

Will I hear a change in the quality of sound that indicates tube wear, or do you just wait for them to fail?

Will Fresh tubes sound better even though I don't detected any trouble?
hrunge

Showing 3 responses by hrunge

I have seen two methods of rebiasing. One seems time consuming, using two meters, to match both channels I guess. The other is very quick and requires just one meter. Is it worth the time to do the two meter method?
Thanks to all for the valuable information. I will check the bias and adjust if necessary. I will get back with the results.
Ok, I'm finely getting back with results of rebiasing.
It was long over due by the sound of things. There is such a dramatic improvement in all aspics. The best way for me to describe it in one word is “impact”.