Studio grade, dual stage compression

With an electric 12-string guitar and a Vox or Fender rig, the Kemper can do it.
While a Fairchild tube compressor was originally used to get that sound, the Janglebox is a stompbox, and the McGuinn Rick has a solid state compressor, too.

The compressor section of the RM Rick's schematic is very similar to the MXR Dynacomp, and the Janglebox is also similar to the Dynacomp, with some additional controls added.

The 370-12RM guitar's schematic:http://tremolo.pl/Przystawki2/Rickenbacker/370_12RM Roger McGuinn Limited Edition.gif

The Dynacomp:http://geofex.com/FX_images/dynacomp.gif

Also, if you would like to see a Janglebox schematic, you can create an account at freestompboxes.org