There are not many that have a reverb effect on them. Out of the ones I could find, the Pyramid(which is a powered/booster EQ, not line-level), has it:
Here is a Reverb Kit, which is listed as being used in Home, Pro and Car Audio applications:
Unfortunately, they are not really in demand anymore with things like DSP time-correction, BBE sonic maximizers and of course almost all of these features being built into head units.
If this answers your question, please click "Accept". Tips and Bonuses are welcome and appreciated!!