Gain or loss of signal "strength" is measured in decibels, Do not confuse signal strength with sound pressure levels. there is more than one way to look at things. I was talking about the post alluding to signal degredation... how one could confuse signal loss or distortion and see it as sound pressure level indications, is beyond me.
Don't worry, Sean, You can't pick on me... especially if you and I are not talking about the same thing... and little of this aside has anything to do with the thrust of the notion as to wether or not bi amping is worth it I would think. Decibels are used to measure more than simple sound levels. Just a reminder for the more pedantic.
All I said, in my previous follow up, was I do not believe the addition of more amplifiers and the required peripherals will degrade the sound, or the signal to the extent that it is diffused or distorted. were that the case, ONLY the shortest path for the signal should ever be pursued. hence, with that sort of thinking, 'seperates' would not truly the best approach.... this is not the apparent case however as the largest majority of systems are comprised of separates.
So, it should stand to reason, the addition of more than one amp to develop a signal, should not, in and of itself, be seen as detraction from the bi amping path, or in any fashion provide an inheirent issue for signal improprieities. there's bigger fish to fry with adding amps than the worry of signal loss.
Hope that helps.