There are no needs to be funny about it and there are no needs to get a daytime job.
A phase tester and RTA analyzer are absolutely obligatory thighs to employ and they are inexpensive and very simple to use. A simplest phase tester you might get for $50 and it will be absolutely enough and you will be using it to the rest of your life.
With RTA you would not need anything fancy. There are a number of computer based RTA and some of them are extremely good and very cheap. For instance you my try the John Murphy’s TrueRTA.
It is very simple analyzer, cost juts $100 but it might be VERY powerful and indicative tool if used properly. The TrueRTA is 10Hz to 48KHzm, 1/24 octave. You would need a microphone to go with it and nowadays you might get for sub $50 a very-very good instrumental microphone. Interesting that with tools like TrueRTA you might not need any good microphones or good sound card - you might calibrate them off.
Rgs, Romy the Cat
"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche