A while ago I bought an old Technics SH-8020 from the early 80s. It was fairly cheap and still works like a charm. It has 12 bands (l+r) and starts very low (16 and 32 Hz), which was important to me. It basically showed me that I need a sub and ever since I bought one of these I didn´t use the EQ anymore. That is until last week, when I felt like fiddling around a bit again. And just bringing up some bands half a dB makes a great difference.
Sure, it has no remote, but for dialing it in I used two long RCA Cables and sat down where I usually listen.
I definitely do recommend trying an EQ. It´s fun, it makes listening more fun! And maybe using it will point you to a real „weakness“ of your system. And it will probably help you to get out most of the gear you have.