I have 6 single speakers in the entrance of my home to play holiday music for guests. I purchased 12 of these as each speaker wire has 1 red & 1 black wire each. Made it look very organized on my wall.
Updating my basement sound system, I replaced all the old (Radio Shack) keystone terminations and wall plates with Monoprice products. Every type of connection (RCA, Cable, speaker, fiber optic, HDMI, and Ethernet) was easy to install and stayed in place in the plate, a big improvement. The quality was far superior to what I had, sturdier plastic and better design to keep the inserts inplace. I also added other cable management plates. The final look of all the terminations is very professional.
PROS: Easy to install High quality Keystone inserts fit tight and neatly Improved overall look of the entire system.
these were exactly what i needed for my hifi setup. i threw a couple of these in a surface mount box and stuck it on the wall for a quick install. i have not done any rigorous signal loss testing. they work 10/10 for my purposes, though.