High quality amplifier to speaker switch


I use One pair of speakers, Goldenear Triton One.R, for both tv listening and for more serious music-only listening. For music, the system consists of high quality vacuum tube preamp and solid state power amps. For tv, I have a much more modestly priced (and small) class D amp - saving wear and tear on the tubes and expensive stuff.Does anyone have a recommendation for a switch box to switch between the 2 amps to the same speakers? I would like there to be almost no sound quality degradation.
I know there are some old posts on this, but have not seen a definitive recommendation.
cakids
Thanks for the Amazon link. I may order it and compare to my homemade switch. I notice that to protect the amps it has an internal load resistor across the terminals. Might affect the SQ or amplifier performance somewhat. Seems like a useful device nevertheless. 
Looks like another nice alternative. Cant be used with vacuum tube amps however. So, one has to be sure to keep amps off when switching, as a precaution. Just like my handmade switches.
Thanks for the tip.
Actually I wired a Resistor across the tube amp speaker terminals to protect me in case I did not have the tube amp connected to the speakers when I switched.