Filter Nightclub Formerly the Mark Ultralounge, Filter is now in command and with extensive decor work and sound modifications, it is back and ready to be Atlanta's hottest spot for relevant dance music! Feel at home in the plush lounge upstairs, complete with fully stocked bar, or find yourself on the dance floor below. Liquified, having pioneered Atlanta's electronic music landscape for over 15 years are set to launch an exciting, nightlife venture. FILTER, is a new night club and lounge located in burgeoning historic downtown Atlanta. FILTER's goal is to innovate, rethink and evolve the Atlanta nightlife scene by offering the very best in cutting edge music pumped through an all-new, state of the art NEXO Sound System, in a breathtakingly beautiful space. FILTER is proud to introduce Shadow Lounge and Braille Bar, two unique environments designed with an eco-friendly, yet futuristic aesthetic. FILTER will look and sound like nothing you have experienced in Atlanta or anywhere else.with with an eco-friendly, yet futuristic aesthetic. FILTER will look and sound like nothing you have experienced in Atlanta or anywhere else.