With the 8 ball in mind, Is there a specific reason the MC33178 was chosen over any other opamp? I understand the slew rate is 7V, the NE5532 is 9, would there be a difference or does it even matter?
The MC33178 has low noise, and has modest input resistance since it's bipolar. (It's also ultra low distortion, but that's less relevance for guitar pedals.) I think from an electronics sense, the NE5532 is a better match on those attributes.
The MC33178 has low noise, and has modest input resistance since it's bipolar. (It's also ultra low distortion, but that's less relevance for guitar pedals.) I think from an electronics sense, the NE5532 is a better match on those attributes.
Here I'm assuming that the original designer chose the MC33178 for a reason other than having a bunch on hand, as it's a less common but high quality bipolar IC.
