Okay this is a tricky one. Randy’s pedal board was made in 1979-80 just after he joined with Ozzy. It was made by a British effects Guru called Peter Cornish who also did work for Kirt Hammet of Metallica and loads of other professional people. The pedal board is easy to construct if you are any good with ameteur electronis as it is simply all the MXR range of pedals (Distortion +, compressoe, stero chours, flanger and the 10 band EQ) in addition to these Randy also utilised a Dunlop Wah-wah pedal and a Roland Volume pedal together with either a CopyCat echo (the analogue tape-one) or a Korg Space Echo (very old tape-one. Once you have the pedals you need to build a custom housing placing the Wah on the right and volume on the left, with the control pots set in the top. Use a ‘pedal mate’ or similar for the DC voltage supply and away you go. Randy’s also had the on-off switches mounted in the front. One slight snag with this method is that Pete Cornish replaced some of the components in the pedals with others and then excased all the pedal in epoxy resin so the changes could not be duplicated. However, even just running the pedals through with standard patch-leads you can get an authenitc ‘Tribute’ tone. you will need to set the amplifer up correctly and only a valve amplifier (class-A like a Marshall Superlead) will really nail the tone. In addition the amplifier itself was run flat out (or all controls wide open) so something like a Marhsall Power Breaker is a good idea if you wanna keep your hearing intact. Also use a guitar with passive humbuckers such as a Les Paul or something with Seymour Duncan pickups. For reference Randy used Seymour Duncan SH-5 and Jazz SH-2 in the neck position. Hope this helps slightly and enjoy…..