I just picked a PLX-500K yesterday, I also own 2 PLX-1000's and I've been putting it through some tests to compare the two.
I'm having an issue recording into rekordbox 4.2.2. The problem is with the recorded wav file. There are several stutters through the recording, the problem is not with the vinyl, the playback is perfect. I attempted to re-record the track in rekordbox several times and each time there were 3 or more glitches in the recording.
Thinking that recordbox was the problem, I tried recording into Ableton live. I listened to the recording very carefully and there was one small stutter, but the overall recording was better.
Is anyone else having this problem? Im suspecting a problem with the built in usb interface.
I record vinyl into Ableton all the time using an external interface and never have this issue.
So far I'm on the fence about how I feel about this turntable. Im trying to decide if I want to get a second one. I spent some time mixing with it and it feels similar to the PLX-1000, and much better than some other turntables Ive played on. The tone arm feels cheap and the overall appearance and quality is not as nice as the PLX-1000.