Mic preamp-amp k1803-k4001


#1

Hello ,
I have here an K1803 kit and this is with an ua741 , the information now say lm358 and an whole other schema ,is there a difference in quality ? i want to use an k1803 and an k4001 for an mono mic amplifier , what do i need between the two bords , only an 47K log potentiometer or an extra elco , could i use the k1803 i have or do i bay an new one .
many thanks for info