A lot simpler than the Heathkit Color TV I put together back in the early '70s.
Man, that color TV was the ultimate Heathkit. I hear more than a few had send theirs back to Heathkit to fix their mistakes.
My dad assembled the Heathkit Model Aa-151 Stereo Integrated Amplifier== El-84 Output Tubes and AJ-32 stereo tuner. He later gave them to me.
I have never found a sweeter amplifier to use with a good turntable and some really good classical 33 1/3 rpm LPs or rock and roll LP's. You don't get that sweet sound from IC amps these days. Like a fool, I sold them 10 years back.
Heathkit dominated the kit world. There also were I think Knight Kits, but never assembled one of them.
About 20 years ago, I had a hobby of repairing old 1930-1950's AM table radios. They were so simple. They basically all used the very standard five tube circuit. It really boiled down to just buying a replacement kit of a handful capacitors to replace the old wax capacitors that had broken down. And 90% of the time the radio was fixed. Tubes rarely went bad while the radio sat in the attic or basement for 30-50 years.
When I got into the hobby I realized I needed to get the old test equipment, tube checker, capacitor checker, VTVM. It was fun. Then I tried to tackle an old big Hammarlund HF Receiver Model HQ-100 receiver. It defeated me. Man the wiring was so tight and cramped in that receiver.