Do i have to connect headphones before powering LD amp?

[Roy.T]

I know that in case of speakers tube amps i have to connect the speakers to the amp before turning i on, otherwise i risk
in damaging it, so the question that cross my mind - is this apply to headphones tube amps like the LD MK2 V3 that i recently bought?
or can i power it without nothing connected to it other then let say a dac, or nothing at all.

thanks

[rockage]

Negative, you can power up without headphones attached.