These are some very precise monitors. The speakers have a closed cabinet (so no porting involved), which enables a fast transient response.
As the manufacturer says, their most transparent interface ever.
A great equalizer for broad strokes and doing low and high shelving, with very usable Mid/Side processing.
Self built compressor based on the kit by PCB Grinder. Kits aren't available anymore, only the PCB's. It's very useful as a glue compressor and also has HF sidechain.
Also a self built project, this is a very transparent five band equalizer based on the DR-MQ5 kit on DIY-Racked. It's a DIY GML/Sontec inspired project, it's not an exact clone of the Sontec 250ex as there are many more steps than the original 250ex and fancy stuff like m/s and l/r.