On mercredi 14 Juillet 2004 14:03, Scott Bernardi wrote: > Ideally the BC560 pair should be matched, but it is not as critical in a > VCA as it is in a VCO. LM13600 can be substituted in this case because > the output darlington buffer is not being used (that's the only place > where LM13600 and LM13700 differ). > Thanks Scott ! Linium