Polk Audio Signa S2 vs Polk Audio Signa S3

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Signa S2 compared with Signa S3

	Polk AudioSigna S2	Polk AudioSigna S3
Overview
Released
Released	2018	2020
Sound
Type
Type	Soundbar	Soundbar
Channels
Channels	2.1	2.1
Dolby Atmos
Dolby Atmos	No	No
Drivers
Drivers	Two 1.25 × 4.4 in oval midrange drivers and two 1 in tweeters; included ported subwoofer has a 5.25 in driver. Maker sheet's 165 mm parenthesis conflicts with its inch value and current maker table's 13.34 cm.	Two 1.25 × 4.4 in oval midrange drivers and two 1 in tweeters; ported wireless subwoofer has a 5.25 in driver. Maker sheet's 165 mm parenthesis conflicts with the current maker table's 13.34 cm.
Frequency response
Frequency response	45 Hz–20 kHz system response (maker; no tolerance published)	45 Hz–20 kHz system response (maker; no tolerance published)
Audio formats
Audio formats	Dolby Digital decoding with virtual surround presentation; stereo 2.1 physical arrangement, no Atmos or dedicated centre channel (RTINGS); DTS unsupported (Heise)	Dolby Digital 5.1 decoding and PCM over HDMI ARC or optical, reproduced through a stereo 2.1 system; no Dolby Atmos or DTS Virtual:X (GearLab)
Room tuning
Room tuning	Movie, Music and Night modes; bass adjustment and three-level VoiceAdjust	Movie, Music and Night modes; eight bass adjustment steps and three VoiceAdjust levels
Connections
Wi-Fi
Wi-Fi	No	Yes
Bluetooth
Bluetooth	Yes	Yes
AirPlay
AirPlay	No	No
HDMI eARC
HDMI eARC	No	No
Voice assistants
Voice assistants	None	None
Wi-Fi
Wi-Fi	–	Wi-Fi networking for Chromecast built-in; setup through the Google Home app
Ports
Ports	One HDMI ARC connection, optical digital and 3.5 mm AUX input; no separate HDMI video input or passthrough	One HDMI ARC connection, Toslink optical and 3.5 mm AUX input; USB maintenance port, not normal playback; no separate HDMI video input or passthrough (AVForums)
Streaming
Streaming	Bluetooth music playback; no Wi-Fi networking, app or voice control (Heise)	Chromecast audio from compatible music apps over Wi-Fi, plus Bluetooth playback
Multi-room
Multi-room	–	Google Home grouping with other Chromecast-enabled speakers
App
App	–	Google Home for network setup, grouping and automatic overnight firmware updates
Design
Weight
Weight	1.8 kg	–
Controls
Controls	Five top buttons, supplied IR remote and LED indicators; TV volume control over HDMI CEC	Top power, source, Bluetooth and volume buttons; IR remote, HDMI CEC and IR learning; four status LEDs. Google Assistant music control requires a separate compatible speaker; no built-in voice assistant.
Mounting
Mounting	Rear keyhole hangers for horizontal wall mounting	Rear keyhole hangers and supplied wall-mount spacers
Size
Size	Current maker table gives soundbar 89.99 × 5.46 × 8.18 cm and subwoofer 17.07 × 34.04 × 30.99 cm, W × H × D. Maker sheet rounds these to 90 × 5.5 × 8.4 cm and 17.1 × 34.1 × 31.2 cm, with bar 1.8 kg and subwoofer 5.2 kg; main weight is bar only.	Current maker table gives soundbar 89.99 × 5.46 × 8.18 cm and subwoofer 17.07 × 34.04 × 30.99 cm, W × H × D. Maker sheet separately lists bar 898 × 56 × 83 mm and subwoofer 171 × 311 × 343 mm, with conflicting inch equivalents.
Colours
Colours	Black; Signa S2D has a different fabric finish with the same specifications (RTINGS)	Black
In the box
In the box	Soundbar, wireless subwoofer, IR remote, two power cords, soundbar power supply, 1.5 m HDMI and optical cables and literature (maker sheet)	Soundbar, wireless subwoofer, IR remote and AAA battery, two power cords, HDMI and optical cables, wall-mount spacers and literature (maker quick-start guide); information sheet additionally lists a soundbar power supply.