How to identify an mondial aragon 8008 amp from an 8008BB

so you can put each amp on scales and whatever side goes down it's BB version. if both stay the same, than it's either or.

Nope. The BB has both balanced and RCA inputs. The regular 8008 has RCA inputs only. Simple enough. No scales, no pulling off the top cover, just look at the back of the amp. 

so you can put each amp on scales and whatever side goes down it's BB version. if both stay the same, than it's either or.

Easy, the BB version is heavier due to the dual transformers and has rca in's as well as balanced. It's also the version you want unless you jump up to the palladiums.

The 4004 has the flat face. The 8008 has the protruding face. The 8008BB has balanced inputs and a more robust power supply as well as more output devices. If it has balanced inputs, it is an 8008BB. If there are no balanced inputs, it is an 8008. In other regards, the external of the amps look the same.