Rare first run pedal, in great condition considering age, sounds fantastic, no electronic issues. Cheapest one I've seen on reverb.com is $282 + shipping and tax, so this is a good deal if you want a first run vintage SD1. No mods, but I did replace the indicator bulb (it was burnt out) with a blue one. Can be switched back to red fairly easily. Meet in person, no shipping, cash only, no trades. Thank you!