BOSS SD-1 fa 4558 chip!

I am auctioning on ebay : Orig. Boss SD-1 Super Overdrive - 4558 chip! Item # 2503780219

Current bid US $35.00 Starting bid US $35.00 Description This is the original SD-1 Super OverDrive pedal by Boss, circa 1982, not the Made in Tawain version that is sold today. The Japanese version has much sought after 4558 chip. Often sells today for over $100. Despite some small surface scratches, pedal is in perfect working condition. I am the second owner! This is a must-have for people that need their overdrive pedals to be much, much more than just distortion. The 4558 chip provides improved bass response. It provides a Tube Screamer and a Clean Boost! Amazing. All the cream of Creem and Clapton. This is the same vintage pedal that U2's The Edge uses in his setup and is described this way on the web site listing his gear: 'BOSS SD-1, used for the early things like the BOY and WAR albums for the overdriven sounds, with this thing you´ll get the original high-mig-snobby Edge-tone in combination with a equalizer. Edge uses this pedal a lot, because it give´s you a very good sound in combination with a VOX amp.' DON'T PASS IT UP. A great pedal to own. Low mailing cost.