The Pioneer Elite VSX-37TX is a high-end A/V receiver. The THX-certified VSX-37TX can output up to 120 W per channel in 5.1 surround sound mode, for a total output power of 600 W, not including a subwoofer. Other than added power and connectivity, the receiver is very similar to the VSX-36TX, supporting Surround-Back via THX-EX processing, enabling 6.1 and 7.1 setups. Multi-channel digital noise reduction and dual 24-bit digital signal processing, among other features, aim to optimize sound quality from a variety of sources. The unit decodes DTS and Dolby Digital 5.1 as well as Surround EX and DTS-ES Matrix 6.1. A two-year warranty is standard.