It's a sequenceable filter, it's an amp modeller, and it's a drum machine... it's the AdrenaLinn, the new guitar processor from famed designer Roger Linn, best known for his classic drum machines and sequencing workstations.
The AdrenaLinn is the first product from Roger Linn Design, and was designed by a team that includes Roger himself (inventor of the LinnDrum drum machine) and Dave Smith, formerly of Sequential Circuits and probably most famous for helping to conceive MIDI. As Roger explained in a recent interview (see SOS June 2002) he is actually a guitarist, and invented this box because he thought it would be fun to have one, but the AdrenaLinn can also be used to process synths, drum machines and just about any other sound source you care to feed into it.
Upgraded eprom. Includes power supply
https://www.rogerlinndesign.com/about/adrenalinn