Splitting RCA signal from my dac to powered speakers and headphone amp?

Okay so here’s my current situation. I have a Monoprice THX AAA 788 Amp/DAC as my main headphone amp, I currently have it’s RCA outs plugged into my Edifier S2000pro’s, using it as a preamp to control the volume of the speakers.

I’m about to buy a secondhand DarkVoice 336SE tube amp to add some variety to my desk setup, I don’t want to buy another DAC just to run to the tube amp and I don’t want to be constantly unplugging and plugging cables. Can I get a RCA splitter and split the signal from my monolith DAC between the edifier’s and the DarkVoice? I’m never gonna run them at the same time, so I wouldn’t think it would have any adverse effect on SQ…

If this will work, what spliiter should I get? I would like something that’s not super cheap and won’t have any negative effects on SQ.

any advice or feedback is greatly appreciated!

EDIT: I was just reading some literature on the DarkVoice and apparently you can use it as a preamp for your speakers… would the Tubes affect the sound of the speakers at all by doing this? what are the upsides and downsides of using a tube amp as a preamp for powered speakers?

Using a splitter like this probably won’t have an audible effect on sound quality. It’s easy to experiment since splitters are cheap. But I personally would use a switch instead of a splitter generally. If you want something fancy, you can use this (which I own):
https://www.amazon.com/TC-7240-Router-Switcher-Selector-Splitter/dp/B00KDQXITG
There’s also this Sescom splitter:
https://www.amazon.com/Sescom-SES-AUDIO-AB-Stereo-Audio-Switch/dp/B008BMLXAU

Going from memory, I think @ZeosPantera suggested the preamp outs (on the DarkVoice) affected the sound. I might be wrong here though.

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Cool. Thanks for the reply, I’ll look into these.

These should be good enough

AudioQuest adapter - RCA male to two RCA female - hard assembly https://www.amazon.com/dp/B0009MFRW0/ref=cm_sw_r_cp_api_i_Ff5oDbQ8WWQ6G

Generally RCA splitters have no discernible impact on the signal. An RCA switch adds more components that might degrade the signal, like poor switches or cheap internal wiring.

I use Pangea audio splitters and they work fine.

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