The Polk Audio SIGNA S2 vs Definitive Technology Mythos SSA-50 comparison shows that these models have some important differences and common features. The Polk Audio SIGNA S2 was rated 5, while the Definitive Technology Mythos SSA-50 has a rating 6.
Soundbars have different amplification type - active versus passive respectively to devices. A noticeable difference is the number of channels that SIGNA S2 has 2.1 and Mythos SSA-50 has 5.0. A built-in subwoofer is available only in the Definitive Technology Mythos SSA-50. Audio features and specs of considered models we rated 6 out of 10 in our ranking. The units in this comparison do not support Spotify.
Both models do not have a wireless Wi-Fi interface. Bluetooth support integrated in the SIGNA S2. The HDMI Audio Return Channel (ARC) is implemented only in the SIGNA S2. Connecting devices via USB is not possible in both models. The connectivity of each of the models was estimated at 6/10.
None of these soundbars can be controlled using the app. Soundbars in this review are not equipped with a microphone. The models under consideration cannot become part of a multiroom system.
Dolby Atmos audio decoder support is not implemented in either the SIGNA S2 or Mythos SSA-50. Devices from this comparison cannot process surround sound due to lack of DTS:X.