Are Dust Covers a MUST

I use a dust cover on my Immedia turntable for two reasons: to keep dust off, and perhaps more importantly, to keep people's hands off.
Joseph

Dust covers not only keep the dust out but also keep wandering hands away. Many of my customers regretted not having a dust cover on when they lost an expensive stylus to cleaning ladies, kids, pets, or even their own loose sweaters.
I don't recommend keeping the dust cover on when playing, however, as its resonance will screw up the sound (the cartridge picks it up).
Disclaimer: I sell dust covers.
Vinh Vu
Gingko Audio

In our inherently dusty home, a dust cover is a must.