Amp to PS100 to helix

I’m looking to go into a 100W marshall head, Amp out to Amp in on PS100, line out from PS100 into the Helix. Is this safe, not going to blow anything up?

Hi Steve, Apologies for the long delay in responding to your question. I’m am in the process of answering older messages so if you already got this figured out, please forgive the redundancy. Yes, that setup is perfectly safe and will work quite well. No worries about damage to your Helix as the Line Out of the PS-100 is designed for that type of configuration. Cheers! Gil