I've heard it said that a "Hum" was emitted by this unit. If you have had experience with turntables you'd find that some tables can HUM due to feedback/resonance or close proximity to system/amplifier. This unit will do that if you don't take the time to insulate it from it's surroundings. Once you get that down you'll find it is one of the finest units you can buy especially for the price. It does not do well when dropped down a flight of stairs as I found out the hard way, so I have to buy another...and I will...
Pros: light weight, great preinstalled cartridge.,
Cons: doesn't do well when dropped from heights !