The Anthem MRX 720 A/V receiver hits the sweet spot of features and performance. Out of the box it can produce 7 channels of surround amplification... with the ability to expand up to 11 channells by adding extra amplification.
The MRX 720 houses amplifiers that are easily powerful enough for medium and large size rooms. While most manufacturers state equal power output across all channels, Anthem takes a slightly different approach with the MRX 720's 7 built-in amplifiers.
For amplifiers 1 through 5 (designated for the front left/right, center, and surround left/right channels), Anthem rates the power output at 140wpc (tested running two channels using 8ohm speaker loads), and for the two remaining assignable amplifiers (channels 6/7 - surround back/zone 2/front height), Anthem rates the power about at 60 watts per channel.
Although this seems unorthodox, the power output ratings for the two extra assignable amplifiers is more than enough to handle the type of audio signals sent to them.
In addition to 7 built-in amplifiers, the MRX 720 also provides expansion for up to 4 externally powered Dolby Atmos height channels (for a total of 11). This is available via two sets of preamp outputs. This expansion capability allows the MRX 720 to run up to a 7.1.4 channel configuration.
Exclusive of the 4 height channel preamp outputs, the MRX 720 also provides a full set of 7 channel preamp outputs. This allows users to bypass any of the internal amplifiers in favor of optional external amplifiers - thus turning the receiver into an AV preamp/processor.
To take full advantage of either built-in amplification or preamp output capabilities, the MRX 720 provides audio decoding for most Dolby and DTS surround sound formats including Dolby TrueHD, DTS-HD Master Audio, and Dolby Atmos. The MRX 720 is also DTS:X compatible. Another important audio feature that MRX720 includes is DTS Play-Fi.