Great little switch noon, ordered on the website of the constructor (a small box cottage in Canada), received two weeks later.
With the customs fees and all that costs about 220 euros.
But no regrets, the CFX4 comes with the cable for your amp, you specify when ordering.
It works superbly, the channel change is instant, the configuration is very simple.
Finish and durability are waiting for you.
If you want to drive your amp or anything else responding to switch on / off or latch, go for this product is perfect!

I put 9 / 10 just because food is not provided but any small transformer will do