How to tell a old 50/50 to a new 50/50 power amp

[JB6464]

Anyone have pics of the old 50/50 power amps ? How can you tell an old one from a new one? Thanks.

 

[crane]

The old one is called 50/50, the new one 2:50. Simple.

 

[lionel69]

the old one has a blue jewel light and the newer one has a red jewel light

 

[JB6464]

Thanks everyone.

 

[t0aj15]

Here's a picture of the old 50/50:
http://www.mesaboogie.com/Product_Info/Out_of _Production/50_50_Stereo/50_50_stereo.html

Here's a picture of the new 2:50:
http://www.mesaboogie.com/Product_Info/Stereo_Power/stereo2-50/stereo2-50.html