few questions on dirty bird at moosapotamus

[makkimo]

i think it's one of the best pedal i ever listen to... so come on try to build it!!!
ok but what about components?
i can't find any of them!!!    
really no one can help me to find more common alternative ones?!!!
778 amp
nte112
nte85...and so on....
what is flutter?
thanks

[cd]

You can use any opamp and any NPN transistor, I used a LF411 and 2N3904 and it worked fine.

[makkimo]

and what about the diodes?
is the LF411 jfet version??