TC Electronic XO24

Th XO24 is an extremely sophisticated 2/3/4 way electronic crossover. It can be configured as a stereo 2 way or as a mono 3 or 4 way crossover. It has complete flexibility on input vs output routing, and includes 4 parametric equalizers on each input and 4 parametric equalizers on each output. This has so many features that I suggest you go to the website for the product details. https://www.tcelectronic.com/Categories/Tcelectronic/Signal-Processors/Crossovers/XO24/p/P0CJZ#googtrans(en|en)
It even lets you save your settings so you can quickly A/B results. If you're a speaker hobbyist or just someone looking for the best subwoofer crossover you can get; this is the one! It is in very good condition - only has a few mild scratches (all visible in the photos. Please note this unit has only XLR inputs/outputs and a digital input.