DBX makes a pretty good product in both e.q.s and DSP units at pretty decent prices. The Klark-Teknik DN360 has been considered one of the best analog e.q.s for decades. I believe they are still in production but I don’t know for how much longer since most if not all DSP units can do the same job plus much more. There are quite a few used ones available currently on eBay.
As for DSP, I like the XTA DP4 series but even used these are not cheap, so I would stick with DBX.
The nice thing about all of these units is that they are all fully balanced units so if your rig is also balanced you could place any of these pieces next to your listening chair and operate them from your listening position. The DSP units can also be controlled remotely via laptop with an additional free software download.
https://www.klarkteknik.com/product.html?modelCode=P0AGV
https://audiocore.wpengine.com/products/4-series/
https://dbxpro.com/en/products/driverack-pa2