Sansui was great in audio in the S.Q. /price ratio scale...
Now i am on headphone only , and the Sansui alpha drive them very well...
but the AKG K340 is near the top of high end not the bottom in the headphone realm...
It is very sensible to the electrical noise floor of the house and component...
then even if Sansui is more than great, i must think about a dedicated headphone amplifier if not out of the electrical grid as my dac , dead quiet,... more quiet than even the quiet Sansui...
I am on vthe fence to upgrade...
Even if the Sansui AU 7700 were extremely good so muck i never change it when i had speakers... So much more quiet than the 7700 the alpha is, a top headphone is so sensible to the electrical noise floor i must consider an upgrade...
Probably the Berning microzotl...
I would had never change my Sansui with any speakers upgrade...So good they are...
But refined headphone need dedicated amplification ... My headphone system now is moere resolving than my speakers/acoustic room... So different they are the K340 is my favorite...
Mahgister, I bought that 9900 used for $250 , enjoyed it for about 8 years and ended up giving it to my brother. Unfortunately it got stolen from his apartment
Wish I still had it