I've got a mcintosh mx110 that's been sitting ...

Sitting for over 1 year. I've finally got a chance toget some mac250 amps .I want to hook the mc250s mono ... To my infinity kappa7s. Thru my mx110 preamp. Do I need to bring my tube pre amp on to variac it up to power or can I plug and go. The mx110 worked great when put on storage. Thanks for any input.