My experience has been if the original sound is unpleasant - time can't make it better. I attempted speaker cable try-outs comparing Canare 4S11, Rocket 44 and new set of Kimber 12 TCs speaker cables and the high's were harsh and the bass was muffled. Since I owned the others and it was the first real difference I heard I then tried the Kimber Bifocals and I liked the sound difference. After about 100 hours I have had several 'wow' moments with music having delicate details and dynamic shifts.
Interconnects I used another method - let them play in the background and not actively listen for a week or so. (My dog gets to listen to music when I'm not home). Then I listened and there have been several 'I didn't notice that moments' on some well known songs.
Part of me wonders is it the improved cables and part of me realizes I didn't notice and I have had guests comment on the sound quality and how the song sounds so much bigger.
Bottom line - if the IC sounds bad to you I wouldn't waste my time, If it doesn't sound 'better' let it play a bit and then re-evaluate.
Interconnects I used another method - let them play in the background and not actively listen for a week or so. (My dog gets to listen to music when I'm not home). Then I listened and there have been several 'I didn't notice that moments' on some well known songs.
Part of me wonders is it the improved cables and part of me realizes I didn't notice and I have had guests comment on the sound quality and how the song sounds so much bigger.
Bottom line - if the IC sounds bad to you I wouldn't waste my time, If it doesn't sound 'better' let it play a bit and then re-evaluate.