I may be wrong, but from what I've read, the purpose of such products (and I am in no way defending or recommending them) is to reduce fluctuations in the power supply to the DACs in the player caused by EM induction from the static on rotating CDs/DVDs. It has nothing to do with optical data retrieval.

I guess such an effect is possible, but as with cables and other controversial tweaks I'm sure the after-lunch effect (dulled hearing) and psychological effects have more relevance to perceived differences.


Roon Developer and ex-moderator of this Forum
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