KT 150 failure

I bought these in March from an outlet in Canada.  About the time that tubes were getting scarce.  I really just wanted some new 66’s or maybe to try some kt88’s.  All I could locate at that time were the 150’s.  Gave me a good excuse to move farther up the chain.  Long break in, but they sounded just great.  I’m hoping that this is a one off.  4 x expensive is a commitment I guess.  If it happens again too soon I’ll cut my losses and retube with 66’s maybe.  No whining from my end.  All this improves the quality of my life, every single day

A microphonic or futzy  tube is part of tube ownership.

I've been pretty fortunate with my PL't tube consumption. NOS  US power tubes held up with 6 years of heavy use and had 2 PL branded Chinese EL34's go after couple years of moderate use.

I don't have any desire to try the KT 150 based on user  tube life reports, and price vs. expected tube life. PL HP user-8x power tubes of something over $50+ makes me think twice about what to try.

Yup. Almost went with HP, but being retired, the cost of 8 tubes steered me to the Dialogue Premium.  Happy Happy.  This amp is on, a good portion of every day.  Tubes are the “cost of doing business”

" Almost went with HP, but being retired, the cost of 8 tubes steered me to the Dialogue Premium"

I'm rounding 3rd base towards retiring. PL seems to fit retirement lifestyle-just turn it on and enjoy. 

Excellent "base" to use better than average sources/speakers. 

Happy listening during your retirement years.

We’ll my rig only has 4 power tubes and have a load of 88s 120s 150s and 170s. Started buying when tensions were building in Russia. Had some insider info with a couple of joint ventures we were doing in Russia and Ukraine. Also when all the Russian scientist and engineers bailed from NASA in Houston.