old console stereos with new electronics?

In the late 50s through the early 70s there were some good looking console stereo units/cabinets that were attractive with terrible audio electronics.  My question is, has anyone updated an old console by putting modern items such as an integrated or receiver, CD/SACD player and outboard speakers?
This is something I have been considering.  Many people trying to sell mid-century items use the catch phrase of "Eames Era" referring to Charles Eames.''
I am considering this undertaking for a second room system that will have some mid-century modern/Danish designer furniture,... Wegner, Mogensen, Juhl, etc.  
Thanks for your time/thoughts.