To Preamp Or Not To Preamp,That Is The Question

Here's a few general rules of thumb:

The further away the CDP is from the power amps, the more likely a preamp will help.

If you have a built-in volume control: if analog you will need the preamp less, if it is digital, you will need the preamp more (digital controls rob the signal of resolution as you turn them down, so you use the volume control in the preamp instead to avoid this problem).

Why CDP and DAC designers use digital volume controls is beyond me. None of them work and a digital designer would be the first to know that...

Al, on this one all I can say is that every time I see a digital volume control, my experience with them is that by the time you are down to 85% (as opposed to 100) there is an audible loss in resolution.

I get that there is an explanation for why I can't possibly be experiencing that; obviously I don't buy it.

Mikey44, the amp is usually less convenient, but from a performance point of view that setup usually works quite well.