Adding an Accuphase A-46

I have no direct experience with the particular gear referenced. When you double the power of an amplifier, you only get a 3dB increase in loudness. Generally, this is considered to be the lowest significant perception in sound increase most people can discern. So unless you are on the razor's edge of what is needed, it is unlikely to make a significant difference, since this will yield only a 50 percent increase in power.

It will make a difference because it will handle transients better.

Thanks guys. I guess other than considerations relating to added power, my concern is how good the preamp section of the E-560 might be. Dave 72 - thanks for your input on this point.

So the E-560 is going to be run as a preamp only? What about the amp section, is it going to be churning away in class A at idle the whole time?(Class A amps dissipate max heat at idle as there is no load to sink energy into) this seems like a waste both of a good amp and electricity. Seems to me, you would be better served by just going the amp/pre route and selling the E-560.

Good point Spinaker01, I was under the impression that the power amp section of the E-560 shuts down when used as a preamplifier. I'll have to check this with the dealer, as well as various prices of preamps if I decide to upgrade. Thanks.