I love the Black Heavens in my Duvell 6! They have a throaty growl to ‘em. I did the wiring a little different this time. I soldered a grounding wire to the braid shielding and ran that with the green ground wire to the pot vs. soldering the braided shielding directly to the pot. Looks neater IMO. A shout out to Nick at Axe Palace for hooking me up with the pups.