So here's the story. I was in need of an OD pedal, even though it won't get used that much. I was having a little trouble selling my EHX Pulsar, and so a guy offered me a "like new" SD-1. Even though it was a bit of mismatch value-wise, I thought I'd give it a shot. Quick swap, and I am now the owner of an SD-1. Once I plugged it in, and kicked it on, I was blinded by an bright blue LED. I knew right away that this pedal had been modded and was not stock as I was told. I emailed the guy I got it from, and he said he wasn't aware of any mods. I asked him about where he got it, but he wouldn't say and/or didn't know anything else about the pedal. So, I went back to the pedal. There were no obvious signs of mods, like a sticker of the company that modded the pedal, however the Boss sticker was off the bottom of the pedal. It was included in the box along with the manual and standard Boss advertisements. I did discover, on the outside of the box, a price tag from IRC Music in Indianapolis. The price was $97.50. Another clue that this pedal was modded since they sell for $50 new. I called IRC, and they said they don't sell modded Boss pedals unless they get them used. They also don't use a computer for their inventory, so there's no way to look it up. So, I'm back to square one. I know it's not a Keeley mod as there are no additional switches on the pedal. It also looks perfectly stock except for the LED. Here's a pic of the guts. Thanks in advance for the help!