Is there a difference between these 2 diodes. The 1n34A is needed in the Fuzz Central version of the Dallas Rangemaster that I'm planning to build.
http://store.americanmicrosemiconductor.com/diodes-germanium-and-selenium-diodes-germanium-diodes.html
has the data sheets for both of these, seems to be no significant difference that I can see in a quick look.
different package, and some current ratings are different, but probably nothing that would affect its use in a pedal.
For the RangeBlaster you can use just about any Germanium diode...1N100, 1N270, 1N34, 1N34A, etc. Just as long as it's Ge. it should work fine :) 1N34A is one of the more common values, so I listed that one on the schematic.
Phillip