They sit firmly, but there is no difficulty to get them unplugged. I think the cable works really well with the Hugo 2.
Edit: I was never worried about damaging the sockets — if that helps. I understand it might have been slightly “traumatic” when unplugging cable damaged the DAC…
AR Lunar RCA to DIN between my Qutest and 282, fitted with RCA WBT Nextgen 110 these are designed to tighten after the plug is inserted into the RCA connector.
If you google WBT Nextgen 110 plug there’s a good read up on the connector.