Stellar Phono - sleep mode?

When not in sleep mode (when it’s playing records) my SPP is totally quiet. But when I put it to sleep it hums noticeably through my amp. It’s not a major issue as when it’s in sleep mode I usually have my integrated amp connected to another source.

But the question arises… do I need to put the Stellar into sleep mode at all? I’m coming to the SPP from a tube-based Ear phono stage that has been left on for more than a dozen years. Can I just leave this thing on all the time?

I leave my SPP on 24/7

Thanks for the response.