Slumber Sync

Pillow speaker for TV & sleep

Low-latency TV audio, Bluetooth streaming and your own MP3s, with four slim speakers for more even sound as you turn.

Regulärer Preis $89.99
Subtotal: $89.99
  • 2-Year Warranty
  • 60-Day Returns
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Price $89.99
✨ Product highlights
  1. Low-Latency TV, Without HeadphonesKeep dialogue in sync with a compatible Auracast source or transmitter. TV transmitter sold separately.
  2. My Audio: Bluetooth + MP3Stream from your phone or play built-in sleep sounds and your own MP3s. Update files through a PC and data cable.
  3. Four Speakers. More Even Sound.A wider listening area for back sleeping and turning from side to side, with less need to align your ear with one small speaker.
  4. Gentle Sound at BedtimeBackground sound may help mask tinnitus for some listeners. Does not treat or cure tinnitus.
  5. Plug In. Skip Charging.Continuous external power required during use. No built-in battery to recharge.
Avantree Slumber Sync SLP-370P four-speaker pillow insert with controller and USB power cable, shown beside a bed pillow

Slumber Sync

$89.99

Slumber Sync

$89.99

Your TV. Your Audio. Your Bedtime.

LOW-LATENCY TV

Watch TV in Bed.
Keep Dialogue in Sync.

Hear TV dialogue closer to your pillow without wearing headphones. A compatible Auracast connection helps keep voices aligned with the picture.

Compatible Auracast source or transmitter required. Transmitter sold separately. Actual delay depends on your setup.

MY AUDIO

My Audio.
My Bedtime.

Stream from your phone via Bluetooth, or put your phone away and play built-in sleep sounds or your own stored MP3s.

Add or replace MP3s through a PC and data cable. No phone or computer connection needed for stored-audio playback.

GENTLE BEDTIME SOUND

When Ringing
Keeps You Awake

Gentle background sound may help mask tinnitus and give your attention something else to settle on, without sleeping in earbuds.

Individual experiences vary. Does not treat or cure tinnitus.

Best for

  • Watching TV in bed without wearing headphones
  • Streaming music, podcasts, audiobooks or online radio from your phone
  • Playing your own MP3s or built-in sleep sounds without a phone connected
  • Back and side sleepers who want sound spread across a wider pillow area
  • A regular bedside setup without a nightly charging routine

Not ideal for

  • Users sensitive to feeling an insert in or beneath their pillow
  • Use beneath very thick or dense pillows, which may muffle sound
  • Users seeking room-filling volume or deep bass
  • Anyone needing complete sound privacy; nearby listeners may hear audio
  • Portable listening without access to external power

Before buying

Compatibility

Stream from your phone via Bluetooth, play built-in sleep sounds or your own stored MP3s, or receive TV audio from a compatible Auracast source.

Phone / tablet Bluetooth Supported Stream music, podcasts, audiobooks and online radio from a compatible device.
Your MP3s Built-in storage Connect to a PC with a data cable to add or replace files. No phone needed during playback.
Low-latency TV Check source Requires a compatible Auracast source or transmitter. TV transmitter sold separately.
Check your setup before buying Bluetooth support alone does not confirm low-latency TV compatibility. MP3 updates need a PC and data cable. Keep the speaker connected to external power.
Contact Support

No built-in battery. Actual audio delay depends on the source and setup. Sound may be audible nearby.

Full compatibility detailsTap to open
Phone audio
Bluetooth phone or tablet Supported Stream audio from a compatible Bluetooth device.
Standalone playback
Built-in sleep sounds Supported No phone or computer connection needed during playback.
Your MP3 files Supported Stored on built-in SD storage. Add or replace files through a PC and data cable; no removable card needed.
TV audio
Compatible Auracast source Required for featured TV setup Add a compatible transmitter if your TV does not broadcast compatible Auracast. Transmitter sold separately.
Power
Continuous external power Required No built-in battery; must stay plugged in during use.
Product highlightsTap to open
  1. Low-Latency TV, Without HeadphonesKeep dialogue in sync with a compatible Auracast source or transmitter. TV transmitter sold separately.
  2. My Audio: Bluetooth + MP3Stream from your phone or play built-in sleep sounds and your own MP3s. Update files through a PC and data cable.
  3. Four Speakers. More Even Sound.A wider listening area for back sleeping and turning from side to side, with less need to align your ear with one small speaker.
  4. Gentle Sound at BedtimeBackground sound may help mask tinnitus for some listeners. Does not treat or cure tinnitus.
  5. Plug In. Skip Charging.Continuous external power required during use. No built-in battery to recharge.
SpecificationsTap to open
SKU
SLP-370P
Product type
Pillow speaker for TV and bedtime audio
Speakers
Four slim speakers
Wireless audio
Bluetooth streaming and compatible Auracast reception
Standalone playback
Built-in sleep sounds and your own MP3 files
Storage
Built-in SD storage; update MP3s through PC + data cable
Power
Continuous external power required; no built-in battery
Works withTap to open

Add-ons

Add a compatible TV transmitter when your source does not broadcast Auracast.

Bridge Accessories

Others

What's in the boxTap to open
  • Slumber Sync four-speaker pillow insert × 1
  • Controller × 1
  • USB power cable × 1
Frequent Ask QuestionsTap to open
Can I connect it to my phone via Bluetooth?

Yes. Stream music, podcasts, audiobooks, online radio and other audio from a compatible phone or tablet via Bluetooth.

Can I use it without my phone?

Yes. Built-in sleep sounds and MP3 files stored inside the speaker play without a phone connection. External power is still required.

How do I add or replace MP3 files?

Connect Slumber Sync to your PC with a data cable and transfer supported MP3 files to the built-in storage. No phone or computer needs to remain connected during playback.

Do I need to insert an SD card?

No. The SD storage is built into the product. Use a PC connection to add or replace audio files.

Can it play online radio by itself?

Online radio requires a connected phone or tablet streaming through Bluetooth. Standalone playback uses built-in sleep sounds or stored MP3 files.

Can I connect it directly to my TV?

For the featured low-latency setup, your TV must provide a compatible Auracast broadcast. Otherwise, add a compatible external Auracast transmitter. Standard Bluetooth support alone does not confirm compatibility.

Is a TV transmitter included?

No. This SLP-370P listing is for the pillow speaker. A compatible TV transmitter is sold separately.

Will all connections have the same low latency?

No. The featured low-latency TV benefit applies to a compatible Auracast setup. Delay depends on the source and connection; ordinary Bluetooth streaming may have different latency.

Why does it have four speakers?

Four speakers spread sound across a wider area instead of concentrating it at one small point, helping provide more consistent listening as you change position. Placement and pillow material still affect what you hear.

Does it need charging?

No. There is no built-in battery. It must remain connected to external power while in use.

Will my partner hear it?

Some sound may be audible nearby. Leakage depends on volume, placement, bedding and the room. Start at a low, comfortable volume.

Can it help when tinnitus bothers me at bedtime?

Gentle background sound may help mask tinnitus and make ringing less noticeable for some listeners. Choose built-in sounds, Bluetooth audio or your stored MP3s. Results vary; the product does not treat or cure tinnitus.

Will it work beneath any pillow?

Very thick or dense pillows may muffle sound. Adjust placement and volume to find a comfortable listening position.

ComparisonTap to open
Listening difference
Single-speaker design
Speaker layoutFour speakers across a wider areaOne localized sound source
When you change positionMultiple speaker positions help maintain more consistent listeningMay depend more on staying close to the single speaker
Finding a listening positionLess need to align your ear with one small speakerMay require more precise placement