This applies to the 6i6

If you are experiencing pops through your headphones when connecting them to the headphone ouputs of your Scarlett 6i6, please note that this is known behaviour and not a fault, nor will it damage your headphones in anyway.

The reason for this is, unlike other Scarlett interfaces, the 6i6 utilises a single rail power supply.

We have seen that the pops do decrease as you connect and disconnect headphones, so if you would like to minimise any connection pops during a session, you can insert and remove any 1/4" instrument jack plug a couple of times before then connecting your headphones.