This is a gorgeous Echoplex style preamp. The toggle switches between the three modes: glassy, fat and cranked. It adds a whole stack of complexity and harmonics, generally just making everything sound more better. Includes a red knob that does... something?

Model: Land Devices EP-5 
Made: USA, 2019 (serial 19-094)
Type: preamp, Echoplex style
Power: standard 9v negative power supply (not included)
Equivalent new street price (approx): n/a
Mods: none
Accessories: no box or manual
Condition notes: used, few minor marks, fully functional. Overall: very good condition