RCA Splitter to Bi-amp?

I have a preamp with just one set of ouputs, a Cyrus Pre vs2. I'm trying to come up with a way of using it with my multi-channel amp, a Primare A30.5, to biamp my speakers.

Is it possible to use some sort of RCA splitter to achieve this? I've seen some companies, such as Audioquest, offer y-splitters which might do the job. But I'm not sure if they're really designed for the purpose I have in mind.

Most importantly, would using a splitter like this actually degrade the sound quality?

I'd appreciate any views on this and, if it is in fact possible, recommendations for a very high quality splitter.

Thanks.