Avengers: Age of Ultron features a somewhat tepid sounding DTS-HD Master Audio 7.1 mix that provides impeccable surround activity, but is surprisingly (to me, anyway) light from the midrange down to subwoofer territory. Amplitude across the board seems weirdly mitigated as well, with some effects failing to land with the requisite force. Whether this is an intentional approach or the result of someone not paying attention somewhere in the production chain is unclear, but some may find themselves turning their home theater systems "up to 11" to gain a full appreciation of the film's often dense sound mix. Those anomalies aside, the overall mix is quite enveloping from virtually the first moment, when the sounds of battle resound through the side and rear channels very effectively. Later effects, including some neat ping ponging and panning effects during Ultron's "awakening", and the rumbling climax, offer more opportunities for nice aural immersion, albeit with the same somewhat restrained feeling. Dialogue is rendered cleanly and clearly and is always well prioritized."