What is your best kept secret in mid-fi?

Thanks for taking time out to share info. gotten from years of experiment - they will improve my listening pleasure for sure.

Europian magazines stress the importance of the source in determining the quality of sound. Some audiophiles place inportqance in the speaker. Now I am beginning to think a system sounds only as good as the weakest link. All these tweaks are necessary in putting together a good sounding system.

Just a word of caution for DIY tweakers - be careful when around electricity. Even an unplugged unit is dangerous! Know what you are doing, before opening up any units.

picked up some asc 1/4 tube traps, that are placed in corners.

incredible !!!!

better than a inteconenct / speaker cable change.

Amongst the many already mentioned, a couple that were big improvements in my system.
1. Shielded power cord for the CD player.
2. Separate dedicated AC outlet for CD player.
3. Clean CD's with mold release remover.

Geez,I would tell you,but then it would no longer be a secret!LOL

No one yet has said that--sorry ,I thought it would be a wise statement.

Clean your CD's ann vibration control.