I boght one of those nice little LED equipped A/B switches, the boss A/B 2. although it needs a couple of small batteries to rout the signal and light the LEDS, what a handy dandy gadget. The lights are great for the dark, and to confirm switching has taken place. If you can get one for $20 - grab it, you'll never know when it comes in handy!
It is a handy little switch but I really don't like that it runs off batteries. It's powered by 3V and that's probably why there isn't an AC adpater socket. Maybe the batteries last forever? I just don't like having to use batteries anywhere.
I have a FS-5L wich has batteries too. They last veeery long and you don�t have to disconnect the plug for saving the battery. The current only flows if the led is on