Yes my old pdx 5 was, but hoping for this new one to be good. Also I am going to using shielded cable throughout for low level signal so it should help a lot.
Even after all these efforts if there are still noises then I have to live with that as there aren't any other solution in the similar budget.
X5 40d M Sports - Fully loaded, 7 seats.
Sold 535d LCI, Xenon Adaptive Headlights, ACC 2 (Stop and Go), LDW/TLC
Retrofits M5 heated/lumbar/memory and active backrest adjustment seats, rear heated and folding g seats, SAT Shifter, paddles (SA2TB), HUD, Rear blinds, Electric steering column, SA430 Folding and EC Mirrors, High Beam Assist, CIC, COMBOX Telematics.