I remember bugs saying that the LF442
couldn't be swapped, at least not in his pcb layout for the XR VCO.
Mine already has the TL074 in there by the way.
Mine already has the TL074 in there by the way.
Just had another coffee and swapped the chips and as Mr.Stites predicted all is well with the TL074 but I'm still putting the LF444 back in :)