What a great, no nonsense piece of kit. I'm delighted. It does exactly what it's supposed to do and requires no annoying power unit. I installed a battery to run the LEDs but the footswitch works perfectly well without, so even when the battery runs out, it still works, just without the indicators. I'm using it to switch my condenser instrument mic between channels on the desk, giving me a perfect volume boost for solos. As a saxophonist I was sick of blowing solos at backing volume, when the guitarist and keyboards could play their solos at boosted volume. The Fender footswitch passes phantom power to my clip-on mic and my solos are now out front where they belong. A simple, elegant solution, to a, age-old problem. Perfect.