Aleph 3 safe to operate?

I've just found a Pass Aleph amplifier (6 of them actually) at an audio hoarder estate sale. It's a new in the box Aleph 3. Would it be safe to turn on without having to purchase a Variac first?

Also, I think I'd like to use it and another Aleph amp to power a pair of B&W 802 S2 with North Creek crossovers in a bi-wire configuration. If I use an Aleph 3 for the mids and highs what would the consensus be for the best amp to use for the bass drivers - I can choose from a pair of Aleph 0, an Aleph 0s, an Aleph 5 or another 3.

Also, I am currently using a Threshold Stasis 3 that was updated a number of years ago by Jon Soderberg and have been happily living with it and my North Creek Borealis' for a long time. Keep the Threshold or sub one of the aforementioned. I can't keep all of them per wife - DOH!

Thanks for your opinions

An Old Noob