There is no low gain substitute for the M8080 ( 6C4 ) tube. I use this SCHIIT SYS to attenuate the output of my CDP. It’s worth a try!
https://www.schiit.com/products/sys
https://www.schiit.com/products/sys
help........
just purchased a conrad Johnson classic, with the m8080 tubes. man this thing is loud. I barely have it on 2 and can barely handle the loudness. what can I do. assoc equipment McCormack dna 500, oppo 203, alon IV, acc zen. is there another tube I can use to bring the volume down some... let me know, thanks. maybe the impedence is not right for these tow.