REL were one of the first specialist subwoofer companies to consider not just the quantity of bass but also the quality and, most importantly the speed of bass. Before REL, many subwoofers dug deep but they could sound ponderous. REL stormed the market with a range of massive subs that, quite literally, shook the opposition. Currently, REL continues to make XXL subs but also has a popular range of compact subwoofers that are room friendly yet still deceptively powerful.