Splitting Preamp Output--Affect Sound Quality?

hard to generalize: the length of the cables and varying that aspect might improve or damage to sound quality, with the resonances and impedances being affected. I am NOT an expert in that area, just pointing out that it could have a srious effect, or none. depending on the electronics, and the cabling involved!
It's a "you have to try it to find out" sort of thing.
I would say theoretically yes it would have some adverse effect. but in practice, in your system, hard to say.

Tony,

I've been using Phoenix Gold RCA Y-splitters at the back of my Blue Circle BC21 feeding a 2 channel power amp and subwoofer amp and have been quite happy doing so.

Last year I compared the BC21 against other preamps that have two sets of outputs and still preferred the BC21. I realize this doesn't technically address your concern about splitters, but more so differences between preamps.

The BC21 was my favorite. But you're right, I really should see how it sounds without the adapter. I have no way of attaching a subwoofer without it though.

What components are you using or contemplating configuring in this fashion?

Dean

If you use a good quality splitter there should be no difference between sound from a pre-amp that has an extra set of pre-outs wired in for convenience.

Dave