Tube Pre-amp with SS AMP or stay all SS?


I have a pair of McIntosh MC501 SS amps which I previous used with a Cary SL98P tube pre-amp. I did very much like the combination but now thinking of upgrading to a McIntosh C500. I have heard the SS + SS combo but do not have opportunity to audition the C500 tube pre-amp + Mc501. Anyone have any opinions on this or direct experience? I am using a pair of Dynaudio Sapphires, with a McIntosh MCD500 front end.

Thanks in advance for all the feedback.
campbelr
Post removed 
Rule of thumb,not true.Tube power amp and ss pre amp can be equally synergistic.Irregardless of your persuasion you should have tubes somewhere in your system.
Thanks for all the feedback. I would assume that if I bought the corresponding McIntosh tube pre-amp (C500) for my McIntosh MC501 SS amps, that impedance would not be an issue? (i.e., would McIntosh match their own components?)

Bob
Campbelr

I'm sure a matching level preamp to the mono blocks will be a fine fit impedance wise. I won't say it's going to be the very best sounding, nor the worst. Therein lies the fun of matching and swapping other components about.

the general rule as I understand it for imp matching of preamp to amp is 10:1.

EX. Preamp output imp = 800 - 1100..... then an amp with an input imp of ten times the preamps output imp will surely work well. the greater the better. many Ss amps run from 50K to 100K.

The only confusing issue is how the makers came up with their imp numbers. Say on balanced inputs... are those stated imp numbers collective or for each phase? I usually just look at the SE imp numbers for the amp, and if it's also truly balanced, I just double them for the overall, or see it as per side in XLR config.

Mostly, output imp on preamps are very low... <1000.

You can get away with a bit less than the ten to one scenario but the gain will not be quite as great... but now I'm splitting hairs here.

I doubt you will have any trouble at all integrating any number of preamps to your monos... save for perhaps 'passive preamps'.