ThePedalGuy Presents the Hartke HC33 Bass Chorus Pedal - YouTube
NAMM 2016 PRESS RELEASE: Hartke's New Bass Attack 2 Pedal Delivers Direct Box Capabilities, Along With Premium Preamp Circuitry And Overdrive Effects | Samson Technologies
Hartke ACOUSTIC ATTACK PEDAL Preamp DI 3-Band EQ Effects Pedal w/ Original box | eBay