Why does my tube amp

502p amp...when I bought it I wanted something with at least 50 watts pc, and balanced (or at least XLR...this amp isn't truly balanced but I use XLRs because I like them) inputs as my preamp allowed for that. Very few tube power amps exist in this price range, so I bought it with "factory upgrades" and it still was around 1200 bucks or something (prices went up a bit in the last 3 years). It responds well to every tube roll I've tossed at it including the massive KT150s that are in it now, and its 65 watts per side seem to be more than enough for my purposes. A really snappy accurate sounding modern tube amp with that harmonically sweet tone I seem to need.

Thanks again as always Ralph, hopefully i will be asking you questions about your gear. Mapman it was Wolf's one of a kind posts that got me thinking about the Jolida. Thanks Wolf!

I think I should be taken seriously which is the main reason I shouldn't be.

I tried a search and i should know this but are less sensitive speakers or probably lower ohm speakers, do they shorten power tube life?

The harder you push your amp the shorter the life of the power tubes.

Lower impedance + lower efficiency = shorter tube life.

Another thing to consider that there really isn't a good justification for low impedance if sound quality is your goal. **All** amplifiers, tube, SS and class D, have lower distortion driving higher impedances. If a tube amp has an output transformer (and most do, ours don't) then you will have wider bandwidth driving higher impedances as well.

Tubes, unlike transistors, can deal with higher impedances without loss of power. And you will find that the setup is less sensitive to speaker cables, as well as the output section of the amp (tubes and output transformer) are more likely to run cooler. So if you want to get the most out of your tube investment dollar, use a speaker with higher impedance- 8 or 16 ohms.