Black panel version.
Expando Expandi adds 8 freely assignable CV inputs to the Xer Mixa in just 4 HP. Connect up to two Expando Expandi to Xer Mixa for easy CV control over channel levels, pan, aux sends, and more.
Expando Expandi is not for use on its own and is currently compatible only with Xer Mixa.
Info from Noise Engineering