Home Events Oct 23rd. Migos at Club Onyx Philly. Powerhouse Afterparty Events Oct 23rd. Migos at Club Onyx Philly. Powerhouse Afterparty October 19, 2015 Facebook Twitter Google+ Pinterest WhatsApp This Friday. The OFFICIAL#Powerhouse2015 #afterparty at@clubonyxphilly ! @migosatl in the building!@pnbrock in the Ultra Lounge (Ultra is 18+ ) and it’s the Legend @montanaisthebigshowBirthday party to bring #scorpioseason in right! You seen how many celebs came last year. Ain’t no tellin wha will occur this Friday. Just know I’m in the building too! Get at me for Tix or VIP specials including 360 deal.