Also included are five RCA inputs, 5 sets of binding posts, and a set of 12V triggers. Expert reviewers say the UPA-5 is easy to setup, sturdily built (an improvement over the 2RU chassis on the UPA-1 and UPA-2), and that it requires no upkeep. More importantly, it provides a high level of detail and precision. It’s especially recommended for users currently stuck with an underpowered system.