After reading the manual, the Monoprice system seems to be PRIMARILY intended for use with a device with a stereo (2 channel) output like a laptop, tablet, phone, etc. as opposed to an AVR. The manual does discuss its use with an AVR but the implementation isn't clear to me.
This kit is my solution in a home theater system with an AVR for approximately the same price.
I actually own two of these kits. For one of my 5.1 systems, I connect the "wireless" transmitter unit directly to the L and R Surround speaker posts on the back of the AVR as well as to a convenient wall plug for power. The "wireless" receiver is hard-wired to the actual Surround speakers as well as to a convenient wall plug for power. On the other system, I only needed to transmit audio to a Left Surround (Right Surround was hard-wired). This kit allows that configuration also.
As you can see, between power supplies and speaker wires, the use of the word wireless in quotation marks is warranted IMO. That said, these kits accomplish what is intended and work great for me. YMMV.
Last edited by samsurd2; Today at 02:32 PM.