P Floding;172011 Wrote: > Your figures about tube amps are just plain wrong. How did you arrive at > them? > > "A couple of watts" are in fact quite a lot. If listening at low levels > you might only use 1/10 of a watt or less. In such situations any > crossover distortion will suddenly be very dominant. THD should be > measured at very low levels to unveil this kind of problem, but > crossover distortion is so 70's that people just don't even look for it > much any more (but distortion getting lower with increasing power should > have triggered alarm bells).
Sorry - these are amplitude measurements, not power? In that case take the square root of what I said. Picking a tube amp at random: http://stereophile.com/tubepoweramps/306yamamoto/index3.html you see that the distortion into 8 Ohms at .1W is .5%, and 3% at 1W. Compare that to the A500, which is .09% at .1W, and around .05% at a watt. So it's better by a factor of 5 even at very low power, and by more than a factor of 50 at one watt. That's not particularly good for a SS amp, I agree, but it's still much smaller than is typical for tubes - and of course the amp is capable of much, much higher power output. -- opaqueice ------------------------------------------------------------------------ opaqueice's Profile: http://forums.slimdevices.com/member.php?userid=4234 View this thread: http://forums.slimdevices.com/showthread.php?t=31843 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
