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Hisense AX5140Q vs Polk Audio Signa S4

Every spec side by side, from each maker's published figures.

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HisenseAX5140QPolk AudioSigna S4
Overview
Released2025December 2021
Sound
TypeSoundbarSoundbar
Channels5.1.43.1.2
Dolby AtmosYesYes
DriversThirteen drivers across the system, including front and rear up-firing drivers and a 6.5-inch subwooferSeven soundbar drivers — two 25 mm tweeters, two 120 × 40 mm racetrack midrange drivers, one 25 mm centre full-range driver and two 66 mm elevation drivers; included subwoofer has a 150 mm woofer
Amplifiers600 W maximum audio power across the system; 200 W soundbar, 280 W subwoofer and 120 W surrounds (maker manual); these are not electrical consumption figures–
Frequency responseThe UK page labels 40 Hz–20 kHz as soundbar response; the manual separates bar 120 Hz–20 kHz, subwoofer 40–150 Hz and surrounds 180 Hz–20 kHz–
Audio formatsDolby Atmos, Dolby TrueHD, Dolby Digital Plus, Dolby Digital, DTS:X, DTS-HD Master Audio, DTS-HD High Resolution and LPCM up to 7.1, with format support depending on the inputLinear PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD and Dolby Atmos (maker manual); non-Atmos content can be upmixed for virtual height effects
Room tuningRoom Fitting Tuning requires a compatible Hisense TV; Movie, News, Music, Game Pro and Sport EQ presets; Voice, Night and AI modes; channel-level, bass, treble and surround settingsMovie, Music and Night modes; VoiceAdjust with three levels; bass adjustment
Connections
Wi-FiNoNo
BluetoothYesYes
AirPlayNoNo
HDMI eARCYesYes
Voice assistantsNoneNone
BluetoothBluetooth 5.3; A2DP and AVRCPBluetooth 5.0; SBC codec; A2DP 1.3 and AVRCP 1.6; maker line-of-sight range approximately 10 m
PortsHDMI eARC/ARC output, HDMI input with 4K 60 Hz passthrough, optical, 3.5 mm AUX and USB-A. The UK table says HDMI 2.0; the manual explicitly supports USB WAV/WMA/MP3/FLAC playback from FAT16/FAT32 devices up to 32 GB, despite Clubic describing USB as update-only.One HDMI eARC/ARC connection, optical digital input, 3.5 mm analogue input and USB-A for firmware updates; no HDMI video passthrough input
StreamingBluetooth music playback; no Wi-Fi music streaming or AirPlayBluetooth music playback; no Wi-Fi streaming or built-in voice assistant
Multi-roomIncluded wireless subwoofer and two rear surrounds need their own power connections; Hi-Concerto and EzPlay require compatible Hisense TVs–
AppConnectLife, as listed on the current UK maker page; Homes & Gardens did not find app support on its test sample–
Design
Weight2.7 kg2.9 kg
ControlsTop-panel power, source and volume buttons, alphanumeric display and supplied remote; channel-level adjustment, dimmer, HDMI CEC and Bluetooth/USB playback controlsTop buttons and supplied remote; HDMI control and TV remote learning; remote lacks backlighting (WIRED)
MountingSupplied wall-mount kit; rear speakers have mounting screwsSoundbar can be wall mounted; mounting template and spacers supplied
SizeManual bar 1020 × 59 × 108 mm, subwoofer 163 × 338 × 335 mm, each rear 100 × 202 × 119 mm (W × H × D). UK product page instead gives bar 1020 × 57 × 109 mm. Headline 2.7 kg is bar-only; subwoofer 5.6 kg and each rear 0.7 kg. UK 9.201 kg net weight describes the system.Soundbar 1046 × 95 × 60 mm, W × D × H, 2.9 kg; subwoofer 200 × 328 × 280 mm, W × D × H, 4.1 kg. Main weight is bar only.
ColoursBlackBlack; Signa S4D is an online-exclusive finish, not a different acoustic generation
In the boxSoundbar, wireless subwoofer, two rear speakers, remote, two AAA batteries, HDMI cable, wall-mount kit, power cords and two rear-speaker power adaptors, and documents; mains plugs and accessory quantities vary by region. The March 2025 announcement planned US availability for summer; the exact first-sale month remains unconfirmed.Soundbar, wireless subwoofer, remote, soundbar and subwoofer power cords, HDMI and optical cables, two AAA batteries, quick-start guide, registration and safety cards, wall template and spacers

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