In the words of JHS Pedals:

There are two ways to look at the JHS Pedals Emperor Analog
Chorus/Vibrato pedal. The Emperor V2 is a vintage-correct effect that
absolutely nails the hard-to-find sound of the Arion SCH-1…but its
also a do-it-all modulation solution whether you want a subtle sheen,
convincing rotary simulation, or seasick vibrato. It utilizes a Bucket
Brigade 3207 chipset to deliver the warmth of 80s-style analog chorus
pedals and we’ve added enough onboard and outboard control to put you in
command of every aspect of the Emperors voice. Whether spreading its
warm tones or icy sheen to a pristine-sounding stereo rig… or
utilizing an external expression pedal to cop realistic rotary speaker
sounds on a blues gig, the Emperor can do it all.