Denon DHT-S217 – Dolby Atmos Soundbar with Built-in Subwoofers
The Denon DHT-S217 is a slim 2.1-channel soundbar designed to deliver immersive TV, movie, gaming and music sound without requiring a separate subwoofer. Its six-driver acoustic system incorporates two built-in down-firing subwoofers, dual midrange drivers and dual tweeters. Dolby Atmos®, HDMI eARC, 4K video pass-through, Dolby Vision compatibility, Bluetooth 5.0, Denon Dialog Enhancer and multiple sound modes provide a compact and straightforward upgrade over standard television speakers.
Key Features
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2.1-Channel Soundbar: Six integrated drivers provide stereo reproduction with dedicated built-in low-frequency drivers.
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Dolby Atmos®: Supports immersive Dolby Atmos audio for a more spacious and three-dimensional movie and TV experience.
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Built-in Subwoofers: Two down-firing subwoofers provide integrated bass without requiring a separate external subwoofer.
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Six-Driver Acoustic System: Combines two tweeters, two midrange drivers and two built-in subwoofers in a single enclosure.
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Denon Dialog Enhancer: Offers three levels of dialogue enhancement to improve speech clarity without significantly affecting overall volume.
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HDMI eARC: Receives compatible high-quality audio formats, including Dolby Atmos and Dolby TrueHD, from an eARC-compatible television.
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HDMI Input: Allows a compatible source device such as a media player, game console or Blu-ray player to connect directly to the soundbar.
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4K Pass-Through: Passes compatible 4K video signals from the HDMI input to the connected television.
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Dolby Vision: Supports pass-through of compatible Dolby Vision HDR video.
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Bluetooth 5.0: Enables direct wireless music streaming from compatible smartphones, tablets and computers.
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Pure Sound Mode: Disables surround processing for a more direct audio presentation.
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Movie Mode: Optimises processing for films, television and cinematic content.
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Music Mode: Provides processing designed for music playback.
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Night Mode: Helps maintain dialogue intelligibility while controlling dynamic peaks during lower-volume listening.
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External Subwoofer Output: Allows an optional powered subwoofer to be connected for additional low-frequency extension.
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Low-Profile Design: Its 67mm height allows placement beneath many televisions without significantly obstructing the screen.
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Wall Mountable: Integrated wall-hook mounting points allow installation beneath a wall-mounted television.
Acoustic System
| Product Type |
Powered Dolby Atmos Soundbar |
| Acoustic Configuration |
2.1 Channels |
| Total Drivers |
6 |
| Tweeters |
2 |
| Midrange Drivers |
2 |
| Built-in Subwoofers |
2 × Down-Firing |
| Separate Subwoofer Required |
No |
| External Powered Subwoofer Support |
Yes – Dedicated Subwoofer Output |
| External Amplifier Required |
No |
Supported Audio Formats
| Dolby Atmos® |
Yes |
| Dolby TrueHD |
Yes |
| Dolby Digital Plus |
Yes |
| Dolby Digital |
Yes |
| Linear PCM |
Yes |
| Sampling Frequencies |
32kHz / 44.1kHz / 48kHz |
| DTS:X |
No |
| DTS Decoding |
No |
Sound Modes & Enhancement
| Movie Mode |
Yes |
| Music Mode |
Yes |
| Night Mode |
Yes |
| Pure Sound Mode |
Yes |
| Denon Dialog Enhancer |
Yes |
| Dialog Enhancer Levels |
3 |
| Built-in Subwoofer Level Adjustment |
Yes |
| Mute |
Yes |
HDMI & Video
| HDMI Inputs |
1 |
| HDMI Outputs |
1 × HDMI eARC / ARC |
| eARC |
Yes |
| ARC |
Yes |
| 4K Video Pass-Through |
Yes |
| Dolby Vision Pass-Through |
Yes |
| HDMI Control / CEC |
Yes |
| Simple One-Wire TV Connection |
Yes – With Compatible HDMI eARC / ARC Television |
Audio Connectivity
| Optical Digital Input |
1 |
| Analogue Input |
1 × 3.5mm AUX |
| Maximum Analogue Input |
2Vrms |
| Subwoofer Output |
1 × Subwoofer Pre-Out |
| HDMI Input |
1 |
| HDMI eARC / ARC Output |
1 |
Bluetooth Connectivity
| Bluetooth |
Yes |
| Bluetooth Version |
5.0 |
| Bluetooth Profiles |
A2DP 1.3 / AVRCP 1.6 |
| Bluetooth Codec |
SBC |
| Transmission Power |
Power Class 2 |
| Frequency Band |
2.4GHz |
| Modulation |
FHSS |
| Maximum Communication Range |
Approximately 10m Line of Sight |
| Bluetooth Audio Range |
20Hz – 20kHz |
| Wireless Music Streaming |
Yes |
Network & Streaming
| Wi-Fi |
No |
| Ethernet |
No |
| HEOS® Built-in |
No |
| AirPlay 2 |
No |
| Network Music Streaming |
No |
| Wireless Streaming Method |
Bluetooth |
Control & Installation
| Remote Control |
Included |
| Top-Panel Controls |
Power / Input / Bluetooth / Volume |
| TV Remote Learning Function |
Yes |
| HDMI Control |
Yes |
| Auto Power Off |
Yes |
| Auto-On Control |
Yes |
| Tabletop Installation |
Yes |
| Wall Mounting |
Yes – Integrated Wall-Hook Holes |
General Specifications
| Brand |
Denon |
| Model |
DHT-S217 |
| Acoustic System |
2.1-Channel / 6 Drivers |
| Colour |
Black |
| Power Supply |
AC 100–240V, 50/60Hz |
| Power Consumption |
40W |
| Standby Power Consumption |
1.7W |
| Deep Standby Consumption |
0.5W |
| Operating Temperature |
5°C – 35°C |
| Dimensions (W × H × D) |
890 × 67 × 120mm |
| Weight |
3.6kg |
What's in the Box
| Soundbar |
Denon DHT-S217 × 1 |
| Remote Control |
Included |
| Batteries |
Included |
| HDMI Cable |
Included |
| Optical Digital Cable |
Included |
| Power Cord |
Included |
| Wall-Mount Template |
Included |
| Quick Start Guide |
Included |
System Integration
The Denon DHT-S217 provides a complete single-cabinet audio upgrade for televisions without requiring an AV receiver or separate subwoofer. A compatible TV can connect through HDMI eARC/ARC, while an additional HDMI source can connect directly to the soundbar. Optical and 3.5mm analogue connections provide alternatives for other source equipment, and Bluetooth enables wireless music playback. The two built-in down-firing subwoofers handle bass reproduction, while the dedicated subwoofer output allows an optional powered subwoofer to be added when deeper or more powerful bass is required.