@woots not the Plus level wires. Transparent doesn’t bias or tweak until Reference level.
To the OP… there have been significant upgrades to the transparent line of the 20 years you’ve had yours. I would suggest try your current cables and see what you think. No reason to change them if they make you happy, unless of course you just want to start from new. The bigger question is what speakers are you using, and are they also 20yr old? That may make a much bigger difference with your new setup.