Pathogen JRC4580

[Kroars]

I was curious is it’s worth ordering the three JRC4580/NJM4580 ic’s or if this circuit would sound (nearly?) identical with three TL072’s or other more readily available dual opamps?

I do have to put in another order in the near future, perhaps I’ll just add a handful of the 4580’s and compare when they arrive with other duals and report back if someone hasn’t already tried.

Thanks!

 

[Robert]

I built the prototype using 4558's.

 

[Kroars]

I built the prototype using 4558's.

Perfect, thank you!

 

[danfrank]

I really like the 4580, for a cheap op amp. It's able to have a very low output impedance for an op amp, compared to a 4558 or TL072. It sounds good also. The 2068 is another nice op amp and also very cheap.
I don't know if the circuit you talk about needs the low impedance out of the op amps used.