The greatest concert hall of the Akvárium, the 1300-capacity Main Hall is one of the most modern venues of Budapest, easily catering to the needs of the most popular domestic and foreign bands and electronic music productions. Practically all major Hungarian bands have performed sets in the concert hall featuring a unique Martin Audio soundsystem, a 3x6 meter LEDwalll and a superb lighting system. Apart from top Hungarian acts, Akvárium Klub has hosted international stars including Klaxons, Fritz Kalkbrenner, Marina And The Diamonds, GusGus, Passenger, Hernan Cattaneo, Sasha, Eagles Of Death Metal, Kollektiv Turmstrasse, Troyboi, Wilkinson, Rebecca Ferguson, John Mayall and many more.