Reverb, but with two lots of controls, so you can have a normal tame one and a big splooshy one. And, a little momentary 'sustain' control for doing pad/ambient stuff. And, it's a lovely green colour. Does the job well.

Model: Fender Dual Marine Layer Reverb
Made: China, 2020
Serial: CHHNH20005549
Type: reverb
Power: standard 9v DC negative power supply (not included)
Equivalent new street price (approx): N/A
Mods: none
Accessories: original box and manual

Condition notes: used, no major marks. Tested and fully functional.
Overall: excellent condition (9/10)