I have read a fair bit on here and other forums that there are a few easy and simple mods that can be done to improve the sound of a CDP. I have made up a simple 75 Ohm Jumper for the digital socket. [URL]http://www.diyparadise.com/75ohmtweak.htm[/URL] I now have the cover off the old Marantz and am trying to locate the two Muting Transistor that i have also heard can give slight improvement if disconnected. [URL][IMG]http://i37.photobucket.com/albums/e93/stevefish69/cd.jpg[/IMG][/URL] Can anyone confirm if the piccie above is indeed pointing to the two Transistors. There was also another thread recently regarding the CD63 where Bravura pointed out that disconnecting the headphone amp may help. I know i'm not gonna get miracles from a 17yr old player, but haven't really got a lot to lose by trying Edit.....The deed is done. I de-soldered them, and will give it a try now :o)