Retro series is designed for the outdoor occasion, but still look good and stylish even in a big ballroom. The speaker can produce amazing Sound, Pressure,Level (SPL). One set of Retro Series consists of a Conrad 12 and 2 units of Retro 8. The sound produced can reach up to 100m with SPL 110 dB. With a great quality and clear without deafen ears. Conrad 12 makes Retro Series sounds warm for vocal sounds. Design and finishing is designed to be rainproof.