This is the new Amptweaker DepthFinder EQ, which simulates power amp style Resonance and Presence on your pedalboard or effects loop of your amp. The video was recorded using a Peavey Vandenberg, through the TightMetal Jr, DepthFinder EQ, and into the clean channel of an Ultra 60 head, into a Classic 112E cabinet. I used an mAudio Microtrack to record the guitar, and an iPhone for the voice and video. For more information, and to order a DepthFinder, go to www.amptweaker.com.