All the equipment you may find info in the manufacturer's website for vintage gear, or on-line. You can even locate manuals for each of these if you need.

The Technics turntable was great for budget systems back then. If it still runs well, great find. Make sure the stylus on the turntable is not worn-out or you'll damage the records with a single playing.

The Audio Control unit is a 'equilizer' that boosts or cuts a specific band of frequencies around the labeled center frequency. It has adjustments for the each of the 10 octaves of the audio range, and looks like it has a analyzer that helps you adjust each one for how it sounds. 

You also have a cassette player/recorder, an AM/FM tuner, the integrated amplifier with a phono input and two speaker pairs. The phase linear thing may be something to synthesize a wider stereo image or something to improve 2-channel listening, I'm not sure.

I'd say what you have is a good start on a system. I still think the vintage gear is worth it, and built well too. Some of today's stuff have electronic on/off, and if that fails, you can't even turn it on, and often they do not have parts for the power board. 

Hook them up and listen to it.