new to tubes

If the 86db/1W/1m sensitivity figure is accurate, it can be calculated that a 60W amp such as the Jolida 502 can provide a maximum spl of 99db at an 8 foot listening distance, neglecting room reflections. A 100W amp would provide 101db.

I second the concerns Grant (Tvad) expressed that if the speaker's impedance curve is significantly uneven (which I suspect is likely, based on the driver configuration), tonal balance problems would result with a tube amp. I did a quick search, but could not find an impedance curve for any of the Fritz speakers. I second the suggestion of contacting Fritz.

Regards,
-- Al

i appreciate all the comments. lots of different opinions here. i will contact fritz about his thoughts and report back.

It seems like Tvad and Al and others are backing up my concerns here, though I personally would try to solve the issue from the other direction, in other words go for high efficiency speakers instead of more amp power. But I am also of the mind that the speakers are by far the most important part of the system, so if you like those speakers, then it sounds like you should go for a higher powered amp. If you don't like the sound of your speakers, you won't like the sound of anything else in your system.

my fritz groves are one of the best speakers i have heard under $4000. i dont see myself ever getting rid of them unless i hit the lottery.

You could pick up an Onix Sp3 for about $500, that should give you a good low cost intro to tubes. If you don't like it or want more power you can resell it for about the same price you paid for it.