• I always get nervous with the d/s-s coz there are just loads of misc. errors
• this is the second amp i had to redirect a part of the reference ground ??? i donno much of audio but the test circuit definitely isn't what it suppose to - again - on d/s ((or the audio guys are stupid . . . ))
• the russian К174УН4 is apx TAA300 -- again i wonder which lists the correct schm. -- coz i actually got that ru.1 to work ??? ((won't test the other coz i don't have the chip to compare against))