Drawing on inspiration from the flagship SP31.7mkII Processor, the Primare design team set forth to develop a comprehensive one-box solution to fulfill the demands of multi-channel music and film sound systems. Designed essentially for the superior reproduction of film sound, the SPA21 is equally adept at interface with “whole-house” control systems. A standard RS-232 interface protocol allows your Primare home theater system to be integral with any multi-room, multi-zone system. The SPA21 also provides a wide range of inputs flexible enough to satisfy numerous A/V source components and allows for truly useful control and configuration programming as well.