Connecting a DAC directly to an amp?

Yes, go without preamp and see if it works for you. 

Since I got rid of my analog gear and only have digital sources, I got rid of a newer Mcintosh preamp and went directly from my ps audio ds dac into a ps audio bhk amp, actually the sq is better. Quiet with a lot of headroom. I have attenuation turned on so my volume on the dac is anywhere from 85 to 100 using balanced cables. If you need more headroom, turning attenuation off, my volume is around 40-50

Don’t look like they can be controlled via remote.

Give the fingers some exercise, just Google RCA switch box with remote, there are many.
This ones on special for just $8!!!!!! in Australia.
https://www.jaycar.com.au/remote-control-audio-video-selector-switch/p/AC1654

Cheers George

Emerging Soul
I believe it was you that stated on another thread that you don’t like music very much.  If I am mistaken, forgive me.  However , if you’re primary interest is video, or podcasts, do you really want to be spending major dollars on two channel equipment?

For the 20 mins a week I listen to stereo I want that 20 mins to sound extremely good and to be memorable. There should be no price tag to great when it comes to being successful in finding an extremely grate sounding preamp.