In the words of MXR:

The MXR Reverb delivers six distinct high end reverb styles, each
exquisitely crafted and tuned by the award-winning MXR design team. It
all comes in a standard-sized MXR box with a simple three-knob setup and
a hi-fi analog dry path with a massive 20 volts of headroom thanks to
Constant Headroom Technology. Each reverb style is as richly detailed
as any found in the highest-end rack units and plug-ins, and all you
have to do to step through them is push the Tone knob.
lay trails modes