Anybody own a component that sounds better with the cover off?


I'm not a big tweaker at all but recently I've been figuring out a problem I've have with my Lamm LP2 and now that it's fixed I've been listening with the cover off and then on and then off again and it just sounds better with it off. Things just seem tighter sounding. More precise. 

I've gone back and forth so I don't think I'm imagining it. It's not like I'm putting crystal on top of the speakers or anything :)
dhcod
Years ago running Perpetual Technologies dac, Two very small enclosures around chassis, much better sq without enclosures. Haven't heard this with subsequent equipment.
One of my early vibration control lessons, dealer told me people like their Aronov amp better with the cover off. Sure enough, no doubt. 

This is almost certainly due to the elimination of cabinet ringing. These things all vibrate, that is why they sound better on springs. And they all ring, that is why they sound better with damped springs like Pods. Cabinets are a trade-off between sound quality, dust, and safety.