Dodgy vinyl 'noise' at a gig on Saturday

Wotcha

Was playing at a houseparty on Saturday and ran into a funny issue.

Setup a stack of gear (serious audio pr0n going on - 2x1210, 2xCDJ1000, DJM900, then each indiciadual DJs gear, which meant a couple of X1s and a Kontrol S4 as well an a few laptops). The decks were running my Shure M44s and the other hiphop guys Traktor Mk2 vinyl (first time I've used them tbh - and they do seem quieter)

Before the bodies turned up, the other hiphop guy an I were messing about, he took the left deck and I took the right, just the mess about - I plugged in my A8 though the multicores, and he plugged in his A6

On my deck, the scope was pretty badly jaggy, (there was a blue outer loop which I'm used to and a yellow one inside it? seemed to be going roughly at 45 degrees lower left to upper right)

He seemed to be playing and scratching perfectly well, whereas I was getting the track juddering back and forth and a low input warning when the needle wasn't on the record.

I assume I was getting inducted 'noise' in the phono lines - but why was it only affecting me and not him?

yrs

confused.

Were both the 1210s in the same condition?

Yup ....

as in, once we were playing properly on both decks rather than one each, rather than dicking about before the party started I seemed to be suffering and he didn't ...