yes and no, ebay says
A bid may be withdrawn in exceptional cases, when
You have accidentally entered the wrong bid amount, for example, 1000 € instead of 10,00 €. In this case, please immediately after the withdrawal of a new offer on the correct bid amount.
the description of the item after you have submitted your bid, has changed significantly.
It is not permitted to withdraw bids if
You have changed your opinion about the article.
You feel that you are not yet able to afford the product.
You have something to offer higher than you originally intended.
Imho the underlined part would be applicable if you changed your mind and just don't want to have a player anymore because you bought another one.
Anyway, it's not possible here, that's it
We have both said a lot of things that you are going to regret.