Current equipment similar to ancient DBX 14/10 and/or 20/20 computerized equalizers?

If you just want the measurement and analysis facilities then it'd be worth looking at a calibrated mic from miniDSP and computer software like REW or fuzzmeasure.

Should have known a mic and a laptop could replace the old EQ setup. That's perfect. Thanks, pragmas.

Behringer works but I do NOT like them.

If you are streaming, Roon has parametric EQs built in.

If you want a very flexible unit, miniDSP has a number of EQ's and crossovers you can use in your gear.

Schiit Loki is a 4 band tone control a lot like.

Actually, what I want is to use sound spectrum analysis and an equalizer as a tool to determine a room's characteristics such that I can adjust positions of speakers, furniture, and whatever else might be needed to tame the room's acoustics and obviate (or mostly) the need for the equalizer, removing it from the system completely.

I'm going to investigate the miniDSP UMIK-1 microphone and Room EQ Wizard software for starters. I'll make a decision for hardware solutions only if necessary.

Both the Anthem STR (US$4k DAC-preamp) and any product incorporating Dirac Live will integrate multiple measurement positions. The Anthem can store only 4 at a time, but settings and graphs can be stored in files to recall them later. Among the nicer Dirac units is the miniDSP SHD family (about $900 for digital in and out only, $1200 as a full preamp.