Yes !!!

I own XP 50, JV 2080 and so on.
TRUE. The XP 50 has background noise at 75% level.

Not to avoid it but to raise Signal/noise so that you get a better sound, whenr ecording (I own a ADAT), pout the level at 100%.
Noise is eaten but the sound. I tried at 75 % but it lacks dynamic and you get more noise than sounds.

Roland corp. says we dream or we lie... We are not dreaming. I love my XP 50 but it real has bachground noise.

Enjoy. Best regards.