Sennheiser AMBEO Soundbar Plus vs Sonos Arc Ultra

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AMBEO Soundbar Plus compared with Arc Ultra

	SennheiserAMBEO Soundbar Plus	SonosArc Ultra
Overview
Released
Released	2022	October 2024
Sound
Type
Type	Soundbar	Soundbar
Channels
Channels	7.1.4 (virtual)	9.1.4
Dolby Atmos
Dolby Atmos	Yes	Yes
Drivers
Drivers	Nine drivers, with two 100 mm cellulose woofers and seven 50 mm aluminium full-range drivers; 7.1.4 is the virtualised presentation, rather than a set of discrete rear speakers	Nine silk-dome tweeters (two firing upwards), six midwoofers and a Sound Motion woofer (four motors, dual membrane)
Amplifiers
Amplifiers	Nine Class D amplifiers, total 400 W RMS	Fifteen class-D digital amplifiers
Frequency response
Frequency response	38 Hz–20 kHz (-3 dB)	–
Audio formats
Audio formats	Dolby Atmos, Dolby Digital Plus, Dolby TrueHD, DTS:X, DTS-HD Master Audio, multichannel LPCM, MPEG-H and Sony 360 Reality Audio	Stereo PCM, Dolby Digital, Dolby Digital Plus, Dolby Atmos (Dolby Digital Plus); with HDMI eARC also Dolby Atmos, Dolby TrueHD, Dolby Atmos (TrueHD), multichannel PCM and Dolby multichannel PCM; DTS Digital Surround
Room tuning
Room tuning	AMBEO self-calibration with four built-in microphones; stereo upmixing, adjustable presets and equaliser, Voice Enhancement and Night Mode	Trueplay (iOS and Android); bass, treble and loudness adjustable; Speech Enhancement with four levels; Night Sound
Connections
Wi-Fi
Wi-Fi	Yes	Yes
Bluetooth
Bluetooth	Yes	Yes
AirPlay
AirPlay	Yes	Yes
HDMI eARC
HDMI eARC	Yes	Yes
Voice assistants
Voice assistants	Alexa	Alexa and Sonos Voice Control
Wi-Fi
Wi-Fi	Wi-Fi 6 (802.11a/b/g/n/ac/ax), 2.4 and 5 GHz, 2 × 2 MIMO	Wi-Fi 6 (802.11a/b/g/n/ac/ax), 2.4 GHz and 5 GHz
Bluetooth
Bluetooth	Bluetooth 5.0 Classic/BLE with SBC and AAC audio; LC3 is used for the separate AMBEO Sub connection, not general Bluetooth music	Bluetooth 5.3
Ports
Ports	Two HDMI 2.0a inputs with 4K 60 Hz and Dolby Vision passthrough; HDMI 2.1 eARC output, optical, stereo RCA input, Ethernet, mono RCA subwoofer output and USB-A for accessory power/service	HDMI eARC; optical through an adapter sold separately
Streaming
Streaming	AirPlay 2, Chromecast built-in, Spotify Connect, Tidal Connect with Dolby Atmos and UPnP	Apple AirPlay 2
Multi-room
Multi-room	Supports up to four separately sold wireless AMBEO Sub units; additional rear speakers are not included	Groups with other Sonos products over Wi-Fi; add a Sonos Sub (or two) and rear speakers; TV Audio Swap to Sonos Ace headphones
App
App	Sennheiser Smart Control and browser interface for setup, codec display and sound controls	Sonos app (iOS and Android); works with the TV remote
Design
Weight
Weight	6.3 kg	5.9 kg (better)
Controls
Controls	Included infrared remote, app, browser and soundbar controls	Capacitive touch controls (play, pause, skip, replay, volume, voice mute, grouping); Bluetooth button; microphone switch
Microphones
Microphones	Four far-field microphones for room calibration and voice features; Alexa built in where supported, Google Assistant via an external compatible device and Siri through Apple HomeKit; microphone can be switched off	Far-field microphone array with beamforming and multichannel echo cancellation; switch cuts power to the microphones
Mounting
Mounting	–	M5 × 0.8 mm thread, 6.5 mm deep; Arc Ultra Wall Mount sold separately
Size
Size	Approximately 105.1 × 7.7 × 12.1 cm with feet, or 105.1 × 7.5 × 12.1 cm without feet (width × height × depth)	75 × 1,178 × 110.6 mm (H × W × D)
Colours
Colours	Black	Black, White
In the box
In the box	Soundbar, remote with lithium battery, HDMI cable, power cord and guides; external subwoofer sold separately	Arc Ultra, power cable (2 m), HDMI cable (1.5 m), documentation