Some believe panel resonances translate to vibration, which could compromise the player's ability to accurately reproduce low-level detail. For example, Marantz used to offer the standard CD67 player and an upgrade version, the CD67-SE. In additon to better quality caps in the audio section, the CD67-SE had a double bottom chassis plus a cross brace over the top for vibration control. But you may be correct, in which case I am the one with a loose screw, having frittered away three whole dollars of my hard earned money.