The Hundred Duo Twelve from Rivera features two channels, each with push/pull Ninja boost, and ranges from pristine clean to vintage high gain rock and metal tones. Each channel runs its own three band EQ, and a global presence control is also onboard. On the back panel is a parallel effects loop with send and return controls, internal/external speaker outputs, and a footswitch out.

This amp is in very good condition with general signs of regular use. IT has some tolex tears but no separation.