"Bill M" wrote in message
...
Buck Frobisher wrote:

signal generator, and a distortion analyzer, allowing up to four units to
be compared at one time.

Four of what type of units? Amplifiers, turntables, preamps or what?

All the rage for the well-heeled audiophile or service department in the
early '70s!

Ah, the zany 70s! I can just see Hef in his smoking robe checking the
performance of his 4 stereo systems.

-ex

You got it, Ex.

And Hef's unit showed the Playboy Bunny in the o'scope, dancing and serving
drinks!