Not even close. I once packed two bubble wrapped transformers in the same
box as Scott amplifier and separated with 2 layers of triple wall cardboard
plus 2 inches of heavy rug foam. The transformers broke through and damaged
the amplifier case.

wrote in message
...

Do you think wrapping a W7-A amplifier (el34 P-P, large transformers/
metal/al case) in two layers of bubble wrap and putting it in a single
layer cardboard box is sufficient?

I am too close to this issue to provide a unbiased opinion.

thanks in advance
KC