I would have a real hard time waiting 24 hours. But I definitely can see the value in waiting until it reaches room temp. I would wait until it feels to the touch like it has reached room temp. All the cooling fins should work both ways.
starting equiment that ic cold from being shipped
Is it a real thing that you court problems if you turn on an ice cold amplifier or pre-amp without waiting 24 hours for temperature to rise. I have long awaited Krell FPB and KCT shipping tomorrow, It's single digits in the Midwet. Should I wait a full 24 hours for the equipment to warm inside before introducing any electricity into the components?