Audio/Video Section
Network Multiroom Audio
Control & Convenience Features
Mounting & Power Requirements

Audio/Video Section

Active Soundbar: The Denon Home Soundbar 550\’s unique six-driver arrangement creates an immversive, virtual 3D surround sound without taking up too much space under your TV. A combination of two premium 0.75" soft-dome tweeters, four 2.1875" full-range drivers, and two 2" x 3.5" passive radiators create balanced, powerful, detailed sound.

Wireless Rear Speakers: The Denon Home 150 wireless rear speakers feature a premium 1\” soft dome tweeter and 3.5\” woofer powered by two Class-D amplifiers for room-filling surround sound. The Denon Home 150 offers outstanding high-resolution music playback, incredible detail, and ease-of-use. The Home 150 wireless rear speakers leverages Denon\’s expertise in Hi-Fi amplification, DSP engineering and sound master tuning for high fidelity sound with clear highs and deep lows.

Wireless Powered Subwoofer: The Denon Home Sub is a wireless powered subwoofer designed to connect wirelessly over a WiFi network connection to the Denon Home Soundbar 550. The Denon Home Sub is equipped with a dowing-firing 8\” high-output, long-throw woofer powered by a built-in Class D amplifier that delivers dynamic, clear, room-filing bass. The Denon Home Sub utilizes a low resonance cabinet with an optimized tuned down-firing port for high efficiency, big bass response, and flexible placement.

3D Immersive Surround: The Denon Home Soundbar 550 offers support of Dolby Atmos & DTS:X through its HDMI input and HDMI eARC output; as well a support of Dolby Digital Plus, Dolby TrueHD, and DTS-HD Master Audio. The soundbar optical digital input only supports Dolby Digital and DTS.

• Dolby Atmos: Dolby Atmos surround sound technology dispenses with channel-based coding in favor of more advanced object-based coding, giving the soundtrack designer the ability to precisely place sounds anywhere in the 3-dimensional space for horizontal and vertical surround effects. The Denon Home Soundbar 500 utilizes Dolby Height Virtualization and Dolby Speaker Virtualizer to create virtual surround and overhead effects without the use of physcially placed height and overhead speakers to create an immersive and enveloping Dolby Atmos experience.
• DTS:X: The latest immersive surround sound system, DTS:X features object-based audio coding that lets the soundtrack designer place sonic elements anywhere in the 3D acoustic soundspace, and provides for overhead effects to deliver a stunning surround sound experience. The Denon Home Soundbar 500 utilizes DTS Virtual:X to create virtual 3D sound (including the sensation of height and surround) without the need for actual height or overhead speakers for a DTS:X home theater experience.

Dialog Enhancement & Night Mode: Dialog Enhancement boost dialog in movies and vocals in music, so they can be better heard over the movie effects and musical instruments. Night Mode lets you enjoy high fidelity sound without annoying jumps in volume, so you can watch your favorite programs late into the night without disturbing other family members.

HDMI 2.0b: Equipped with one HDMI input and one HDMI eARC output, the Denon Home Soundbar 550 incorporates an advanced video section that features the HDMI 2.0b specification; including support for 4K/60 Hz Ultra-HD video with HDCP 2.2 compatibility (a requirement for 4K Ultra HD copy-protected content), HDR (High Dynamic Range), and ARC (Audio Return Channel).

• 4K/60Hz + HDCP 2.2: The Denon Home Soundbar 550 supports up to 4K (3840×2160 pixels) video @ 60 frames per second on all of its HDMI inputs and output. It will also pass a 480i, 480p, 720p, 1080i, or 1080p video signals via HDMI. There is no video resolution upscaling. All of the soundbar\’s HDMI jacks support HDCP 2.2, which fully complies with the latest copyright protection standard for 4K video transmission.
• HDR (High Dynamic Range): The Soundbar 550 supports High Dynamic Range video – including HDR10 and Dolby Vision. High Dynamic Range video provides enhanced picture quality by simultaneously enabling greater detail for both the dark and bright parts of an image. HDR reproduces a greater dynamic range of luminosity or brightness levels, creating greater contrast. This increased contrast reveals the subtle nuances of the image, from detailed blacks and shadows to the brightest whites and colors, plus greater depth.
• eARC (Enhanced Audio Return Channel): This feature of the soundbar\’s HDMI output allows audio to be sent from your compatible TV to the speaker through the same HDMI cable already being used to send audio and video to your TV. This eliminates the need for extra cables connected to your television. eARC (Enhanced Audio Return Channel) will support uncompressed audio formats like Dolby TrueHD, Dolby Atmos, DTS:X, & DTS HD Master Audio – where as the previous ARC (Audio Return Channel) was limited to only Dolby Digital, Dolby Digital Plus, DTS, DTS HD, and PCM.

Digital & Analog Inputs: In addition to HDMI connectivity, the Denon Home Soundbar 550 system is outfitted with an optical (toslink) digital input and an analog stereo minijack (3.5mm) audio input.

• Optical Toslink: For TVs without ARC via HDMI, you can connect the Denon Home Soundbar 550 via its optical (toslink) digital audio input. The digital input supports 2ch PCM and 5.1ch Dolby Digital/DTS.
• 3.5mm Minijack: Additionally, Denon has included a stereo analog minijack (3.5mm) input jack that lets you connect the Home Soundbar 550 to your TV without ARC or a digital output, or to a portable music player. This connection only supports 2ch PCM. The Home 150 wireless rear speakers and Home Sub also feature a stereo minijack (3.5mm) input.

USB Port: The Denon Home Soundbar 550, Home 150 wireless rear speakers, and Home Sub are all outfitted with a rear-panel USB (type-A) port that allows you to enjoy a variety of high-resolution and compressed music files from a USB mass storage class memory device, such as a USB thumbdrive (formatted in FAT 32). You\’ll be able to control your USB device\’s music and view song/artist info from the HEOS app on your Apple iOS or Android device. USB portable audio devices that can be charged via USB will be charged when plugged into the speaker\’s USB port (5V/1A); even in standby mode. USB audio can be distributed other HEOS products connected to your home network.

• Music Browsing: Use the HEOS app on your mobile device to browse your connected USB device\’s music library by Artist, Album, Genre, or Song. You can also type in an artist name or song title to find music in your USB device\’s library.
• Playback Control: Basic playback control from the included remote control or Heos app include includes Play/Pause and Previous/Next Track.
• Song/Artist Info: You are able to view song/artist information with Album Art from your inserted USB device on the HEOS app.

High Resolution & Compressed Music Formats: The Denon Home Soundbar 550 supports compatibility with high-resolution audio files for the ultimate listening experience via select online music services, DLNA, and USB. Listen to uncompressed WAV (PCM), ALAC (Apple Lossless Audio Codec), and FLAC (Free Lossless Audio Codec) music files up to 24-bit/192-kHz; as well as DSD (2.8/5.6MHz). HEOS is also compatible with compressed music files – such as MP3, WMA, and AAC (MPEG4).

Built-in Bluetooth: The Denon Home Soundbar 550 system features built-in Bluetooth 4.1 with a 98.4\’ wireless range for music streaming (A2DP 1.2) and control (AVRCP 1.5). You\’ll be able to wirelessly connect to smartphones (including iPhone & Android), tablets (including iPad & Android), laptops (including Microsoft Surface & Macbook), computers (including Windows PC & Mac), and other Bluetooth-enabled devices. Up to eight Bluetooth devices can be remembered by the Home Soundbar 550, so family members as well as friends can enjoy their favorite tracks (only one device can be used at a time)

• Wireless Music Streaming: You\’ll be able to wirelessly stream stored music, music apps, and other audio content from your Bluetooth-enabled source device to the Denon active soundbar speaker. The Home Soundbar 550 supports the Bluetooth SBC codec only.
• Wireless Music Control: You will also be able to control basic playback functions (Play/Pause, FF/RW, Skip) from the unit\’s top-panel controls (the remote does not offer playback control). Advanced music operation will still need to be handled from your Bluetooth-enabled source device. There is no song/artist information display on the soundbar; continue to use your Bluetooth device\’s screen to view song/artist info.

Network Multiroom Audio

HEOS Wireless Multiroom Sound: The Denon Home Soundbar 550, Home 150, and Home Sub are part of the HEOS wireless multiroom audio eco-system – comprising of a family of
wireless network speakers, AV receivers, amplifiers, & pre-amplifiers for your
whole home. There is a free HEOS app to control them from your Apple iOS or Android
mobile device. You can enjoy your favorite streaming music services, internet
radio, or your own music collection through out your home. Plus, set-up is
intuitive and simple. To make HEOS wireless multi-room audio work in your home,
you\’ll need.

• Denon\’s HEOS network audio speakers, receiver amplifiers, and/or
  pre-amplifiers
• a wireless (WiFi) home network with internet connection
• an Apple iOS or Android mobile device connected to your home wireless
  (WiFi) network
• the free HEOS app downloaded on your Apple iOS or Android device

Wired or Wireless Network Connectivity: The Denon Home Soundbar 550 system and HEOS uses your home\’s wireless (WiFi) network for whole-house audio entertainment. The Denon Home Soundbar 550 can connect to your home\’s network via Ethernet (RJ-45) or WiFi (802.11 a/b/g/n/ac). At least a dual-band (2.4/5GHZ) \”N\” router is recommended for the most reliable wireless network connection for high-resolution music playback. The free HEOS app for Apple iOS and Android is used for wireless (WiFi) setup with your home\’s network.

Hi-Res & Audiophile-Grade Synchronization: To deliver a true
audiophile listening experience for high-resolution music playback (up to
24-bit/192kHz) with multiple HEOS speakers & receivers at once, each HEOS
speaker and receiver must be synchronized to an extremely high degree. Based on
years of meticulous research, HEOS delivers unparalleled synchronization
performance within microseconds for exceptional high-resolution music playback.

• HEOS Gen 2: HEOS Gen 2 (HS2) products, like the Denon Home Soundbar 550, will distribute high-resolution music files (up to 24-bit/192kHz)
  throughout your home to other HEOS Gen 2 (HS2) product; without any
  down-sampling.
• HEOS Gen 1: HEOS Gen 2 (HS2) products will down-sample high-resolution music files (up to 24-bit/192kHz) to
  CD-quality (16-bit/44.1kHz) and then distribute the music throughout your
  home to older HEOS Gen 1 product.

Online Music Services: You\’ll be able to stream your
favorite online music service like Pandora, iHeart Radio, SiriusXM, Tidal,
Amazon, Rhapsody, TuneIn, Spotify Connect, Amazon Music, and more. The HEOS app
on your Apple iOS or Android device will serve as the controller for these apps
and provide song/artist information with Album Art. You can create a "Favorite"
station list, so you can quickly access your favorite internet radio stations
and online music channels. These online music services can be distributed to
other HEOS products connected to your home network.

• Amazon Music: Listen to millions of songs, thousands of playlists, and ad-free personalized stations with Amazon Prime & Unlimited Music. With the addition of Amazon Music HD, you will now be able to play Ultra HD music (24-bit/48kHz to 192kHz) on supported HEOS devices from the HEOS App when choosing Amazon Music. An Amazon Music (Prime, Unlimited, or HD) subscription will be required.
• TIDAL: TIDAL is a global streaming service that offers over 30 million songs in
  high-fidelity CD sound quality. TIDAL has two pricing tiers; either $9.99 or
  $19.99 a month. Both pricing levels allow you to access TIDAL\’s entire music
  library. The $19.99 tier has the added benefit of high-fidelity sound at
  CD-level quality.
• Spotify Connect: If you subscribe to Spotify and have the Spotify App on your Apple iOS or Android smartphone, you can stream Spotify to the HEOS system. Spotify
  is a digital music service that gives you on-demand access to one of the
  largest music libraries in the world (over 15 million tracks and counting).
  Spotify makes it easier than ever to discover, manage, and share music with
  your friends. You can browse music by artist, album, track, or most popular;
  and create your own music library with customized playlists.
• Pandora: Pandora is free, personalized radio that plays music and comedy you\’ll love.
  Just start with the name of one of your favorite artists, songs, comedians
  or composers and Pandora will create a custom station that plays similar
  tracks. You can also rate (thumbs up/thumbs down) songs as they play, and
  Pandora will adapt stations to your feedback. You can even bookmark up to
  100 stations and easily switch between favorites.
• iHeart Radio: iHeartRadio is a free, all-in-one digital radio and music streaming
  service that lets you listen to thousands of live stations from across the
  country and allows you to create personalized custom stations featuring
  songs from the artist you select and similar music.
• TuneIn: The HEOS system includes access to more than 100,000 free internet radio
  streams from all corners of the globe via the TuneIn radio service. Just
  select the TuneIn logo from the main Music menu and browse among the 100,000
  stations neatly organized into popular categories and select a station that
  appeals to your mood.
• SiriusXM: SiriusXM Internet Radio lets you listen to over 120 channels of commercial-free music,
  talk radio, news, sports, entertainment, and more.
• Napster: Napster is a streaming music subscription service (starting a $10 per month)
  that allows you to play the full-length songs you choose on demand from a
  collection of over 10 million songs, without ads and without having to
  purchase or download the music.

AirPlay 2 w/ Siri: AirPlay 2 is an advanced and easy-to-use wireless multiroom audio platform for iTunes, Apple Music, and other compatible Apple iOS apps. With AirPlay 2 you can play any sound from your Apple iOS device (running iOS 11.4 or later) or Mac computer (running OS X 10.13.2) on the Denon Home Soundbar 550 and other compatible AirPlay 2 speakers throughout your home. You will also be able to ask Siri-enabled devices (like your Apple iPhone, iPad, or Watch) to control playback of your Apple Music on the Denon Home Soundbar 550. You can choose to play audio in one room, play the same audio in grouped rooms, or play the same audio in every room. If you are an Apple Music subscriber, you can even play different music in different rooms (you can control and group directly from Apple\’s Music App and Home app on your Apple iOS device). You can even watch videos and movies from YouTube and Netflix on your compatible Apple iOS device or Mac computer with perfectly synced audio on the Denon Home Soundbar 550.

Mobile Device Streaming: Using the HEOS app on your Apple
iOS or Android mobile device, you are able to stream your device\’s music library
to the Denon Home Soundbar 550. You\’ll be able to browse your music library by Artist, Album,
Genre, and Song; control music playback functions like Play/Pause and
Previous/Next Track; and view song/artist info with Album Art from the app on
your compatible mobile device. You can even type in an artist name or song title
to find music in your mobile device\’s library. Your device\’s music library can
be distributed to other HEOS products connected to your home network.

• Playlists: You can save the Now Playing queue as a HEOS
  Playlist that you can recall later. The new playlist will be available from
  the Playlists button on the Music tab on the HEOS controller app.
• Music Sharing: The HEOS App also has a feature called
  "Music Sharing" which can share the local music stored on your mobile device
  to other HEOS app users on your home network. The name of the mobile device
  you are sharing from will appear as a new Local Music source allowing other
  HEOS controller apps to browse and play music on your device from their
  device.

DLNA Certified: The Denon Home Soundbar 550 is DLNA (Digital Living Network
Alliance) 1.5 and Windows 7/8 compliant. This allows you to wirelessly stream a
variety of high-resolution and compressed music files stored on your network
connected Windows PC or DLNA-certified NAS drives to the Denon Home Soundbar 550. From the HEOS
app on your Apple iOS or Android device you can browse music files, control
playback and view song/artist information with album art. DLNA music content can
be distributed to other HEOS products connected to your home network.

Multi-Room Configuration: Built-in HEOS technology enables the PMA-150H to become part of the HEOS by Denon wireless multi-room audio eco-system, allowing you to stream and control all of your local and online music effortlessly from anywhere in your home with the HEOS App on your compatible Apple iOS or Android mobile device over a wireless WiFi network connection. The HEOS system is a true multi-room audio system that automatically synchronizes audio playback between multiple HEOS devices so that your music (up to 24-bit/192kHz Hi-Res audio) coming from different rooms is perfectly in sync and always sounds amazing. You can play the same audio source in every room or any combination of rooms you choose, including a different song in every room.

• Systems & Groups: The HEOS wireless multiroom sound system can support up to 32 HEOS speakers, receivers, players, amplifiers, and/or pre-amplifiers (all sold separately) on a single wireless network (IEEE 802.11 g/n; 2.4/5GHz). You can join or group up to eight individual HEOS devices into a group that function as if they were a single source. The HEOS eco-system is flexible enough where you can create up to 16 Groups (2 Heos devices per Group). You can easily group 16 rooms together with Party Mode by simply using a \”pinch\” gesture.
• Compatible Sources: The following sources can be distributed through the HEOS multi-room audio system –
  • TuneIn Internet Radio & Spotify Connect
  • HEOS music apps (including Amazon, Pandora, Tidal, and more)
  • Windows PC & DLNA music servers
  • Bluetooth & USB audio (AirPlay is not supported)
  • Music libraries stored on your Apple iOS or Android mobile device.
  • Analog & Digital inputs (including HDMI, Optical, Minijack)

Control & Convenience
Features

Remote Control: The Denon Home Soundbar 550 comes with an IR remote for basic control of the soundbar speaker. Basic control functions include Power, Source Volume/Mute, Nigh/Dialog Enhancer, Bass & Treble, as well as Quick Select functions. The Home Soundbar 550 is also pre-programmed to work
with select television\’s IR remote controls and offers support for HDMI CEC.

• Pre-Programmed: The Denon Home Sound Bar 550 has most of the leading television remote control codes built-in, so you can control the soundbar speaker with your TV’s remote. Compatible TVs include Samsung, LG, Sony, and Vizio. Control functions include Power on/off & Volume up/down.
• HDMI Control: You can switch off the power, switch input source and
  adjust the volume of this system using your TV\’s remote control over an HDMI
  connection. Your TV also
  needs to be compatible with the HDMI control function. This function may not
  operate due to connected devices or settings.
• Quick Select: Three Quick Select buttons can be programmed for easy access of your favorite functions and radio stations from the IR remote.

Proximity Sensing Controls: The Denon Home Soundbar 550\’s proximity sensing top-panel control interface is activated as soon as your hand approaches. When your hand gets close to the soundbar, its top-panel controls lights up, allowing for easy operation of volume adjustment, play/pause, and previous/next track functions.

HEOS App: You\’ll need to download the HEOS App (for Apple iOS 9.0+ and Android OS 5.0) onto your compatible Apple iOS or Android mobile device. The
app is required and provides everything you need to set up and enjoy music on
the HEOS system. Using your mobile device and the HEOS app, you can setup,
browse, explore, and control HEOS system right in the palm of your hand, from
anywhere in your home. Your compatible Apple iOS or Android device must be
connected to the same home wireless (WiFi) network as the HEOS speaker system.
The HEOS app consists of 4 control screens.

• Settings: The "Settings" screen enables you to connect
  one or more HEOS speakers, receivers, amplifiers, and/or pre-amplifiers to
  your home\’s wireless network. You also get access to Bass & Treble.
• Rooms: From the app on your Apple iOS or Android
  device, you can select which rooms you want playing. You can play the same
  music in multiple rooms by grouping rooms together, or you can listen to a
  different source in each room.
• Music/Sources: You can select what music and which
  source you want to listen to from the app. Choose from online music services
  like Pandora, Spotify, TuneIn, Tidal, etc.; your music library on your Apple
  iOS or Android device, Windows PC/DLNA server, or USB thumbdrive; and HDMI,
  Digital, or Aux inputs; as well as Bluetooth on the Denon Home Soundbar 550. You can also select music from Playlists you\’ve created, Favorites
  you\’ve saved, and your recent listening History.
• Now Playing: The "Now Playing" screen displays song,
  artist, and album information; along with Album Art. You also get basic
  playback controls like Play/Pause and Previous/Next Track, plus Volume
  controls Up/Down and Mute. In addition the "Now Play" screen functions
  unique to the selected online music service or music library.

Alexa Built-In (available firmware update): HEOS and Amazon Alexa customers can now enjoy the convenience of Alexa voice control plus high-quality wireless home audio. In addition to controlling your HEOS components with the HEOS app on your mobile device or tablet, you can now control them with Amazon Alexa voice technology through the Soundbar 550\’s built-in microphone or an external Amazon Alexa device (such as the Amazon Echo – sold separately). You\’ll need to download the the Alexa app (for Apple iOS 11.0+ and Android OS 6.0+) onto your compatible smartphone or tablet device to setup and enable Alexa voice control. Voice control functions include –

• Alexa voice commands include Volume (up/down, specific volume number, & mute); Playback (Play, Pause, Stop, Next, Previous, Resume); and Power (on/off). Plus, you can even use Alexa to switch inputs on HEOS enabled AV receivers and soundbars.
• You can group your HEOS-enabled devices using the HEOS app with an Alexa-friendly name. Once they are grouped, Alexa voice commands will control the group as a whole. If you want to play audio content from only one HEOS-enabled device in the group, you must ungroup the device within the HEOS app.
• You are able use voice commands to search for songs, albums and artists and even podcasts and internet stations from HEOS & Alexa compatible music apps – like Amazon Music, Pandora, TuneIn, & iHeartRadio.
• You can also ask Alexa for weather forecasts, sports scores, news updates; as well as control smarthome appliances, cameras, lighting, and more.
• For a list of current Alexa voice commands supported by the HEOS HomeEntertainment Skill, click here. For setup instructions, click here.

Siri Voice Control: With the Denon Home speaker you can now extend access to Apple Siri beyond where you have your HomePod or HomePod mini in your home or office (sold separately). You\’ll be able to speak to Siri through the built-in microphonse on the Denon Home speaker. Ask Siri to play music, adjust volume, change tracks, or control other smarthome devices on your network.You can also ask Siri to set timers & alarms, send a text message & make a phone call, check the news & weather, plus much more. You will need to use the HEOS App (for Apple iOS and Android OS) to add the Denon Home speaker to the Apple Home app. To get started you will also need the following –

• Heos firmware version 3.1.X (or later) installed on the Denon Home speaker.
• An Apple HomePod or HomePod mini (sold separately).
• Apple iOS 16.1 or later installed on your Apple device.

Works With Google Assistant: Ask your Google Home speaker or other devices with Google Assistant built-in to control HEOS content across your listening environment. Once you start music in the HEOS app, you can ask the Google Assistant to control volume, play, pause, skip tracks, and more. Once you have grouped your HEOS-enabled devices using the HEOS app, you can use the Google Assistant and voice commands to control a group of HEOS devices as a whole. You\’ll need to download the Google Home app (for Apple iOS 12.0+ and Android OS 5.0+) onto your compatible smartphone or tablet device to setup and enable Google Assistant Support. Click here for more info on Google Assistant for HEOS.

• You will need a Google Assistant-enabled device (sold separately) to operate your HEOS products via voice-command; the speaker\’s built-in microphone does not support Google Assistant.
• Your HEOS components and the Google Assistant-enabled device must be on the same network.
• Make sure the unit has the latest HEOS software and firmware update installed.
• Only one voice control service can be enabled.

Firmware Updates: Firmware and software updates from HEOS
are delivered to the Denon Home Soundbar 550 via your home network\’s Internet connection. When
such updates become available, you will be notified when you open the HEOS app
on your Apple iOS or Android device.

Mounting & Power Requirements

Mounting & Placement Options: The Home Soundbar 550 active soundbar speaker, Home 150 wireless rear speakers, and Home Sub offers flexible mounting and placement options.

• Active: Sounbar: The Home Soundbar 550
  can be table-top mounted or wall mounted (keyholes slots are provided for wall-mounting the speaker). The soundbar speaker should be
  placed as close as possible to the television screen. It should be centered
  left-to-right with the screen, and ideally no more than a few inches above or
  below. The most common location is below the screen.
• Wireless Rear Speakers: These compact wireless audio speakers can simply be placed on a table-top, or it can even be mounted on a wall or ceiling using its standard 1/4\”-20 threaded insert on back of the speaker and an optional wall-mount bracket (sold separately). They should mounted directly to the side or behind the main listening position at ear level.
• Wireless Powered Sub: Because the Denon Home Sub is wireless, it can be placed practically anywhere in the room. For optimum results, the wireless powered sub should be placed along the same wall and in close proximity to your the Home Soundbar 550. Even though the Denon Home Sub is wireless, it still requires an AC power outlet connection. Make sure there is an AC power outlet connection nearby the sub.

Power Requirements: The Denon Home Soundbar 550 active soundbar speaker will need to be plugged into an AC wall outlet or surge
protector (sold separately) using the included 6.5" AC power cord. Each wireless rear speaker also comes with a 6.5" AC power cord that will need to plugged in an AC wall outlet or surge protector (sold separately). In addition, the Denon Home Sub will need to be plugged into an AC wall outlet or surge protector (sold separately ) using a 6\’ AC power cord. The Denon Home Soundbar 550 system features two standby
modes to save power.

• Auto Standby: To save power, the speaker system will
  automatically enter Standby mode whenever there is no audio signal or
  control for 20 minutes and will automatically resume whenever
  the speaker is selected and playing music again. There is no visible indicator or
  LED that will show that the speaker is in Standby as it is a fully
  automatic function.
• Deep Standby: The speaker also has the ability to
  automatically enter "Deep Standby" whenever their is no wired or wireless
  audio connection for more than 60 minutes. The front panel LED will
  turn off during Deep Standby. To "wake" the speaker system from Deep
  Standby, you must press the volume or mute buttons which will immediately
  turn on the front panel LED.