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Sonos Sub 4 at $749.00 for Sonos Soundbar Bass

The Sonos Sub 4 adds low-end weight to Arc Ultra, Arc and Beam systems. At $749.00 it costs less than its typical price over the last 90 days.

Sonos Sub 4 - Wireless Subwoofer - Black
Sonos Sub 4 - Wireless Subwoofer - BlackAmazon

The price at Amazon

Sonos Sub 4 - Wireless Subwoofer - Black

Deal price $749.00

$863.80Typical price over 90 days

Save $114.8013% off

  • 4.7 of 5 Amazon rating, 552 reviews

Price checked (Oct 6, 2026, 2:45 PM EDT)

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What the Sub 4 adds to your Sonos system

Amazon price
$749.00
Customer rating
4.7
Customer reviews
552
Typical price over 90 days
$863.80
Difference
$114.80 (13 percent)

The Sonos Sub 4 handles the low frequencies your soundbar can't reach. Two Sonos-engineered drivers sit in a ported enclosure, so movie effects, bass lines and game audio carry more weight.

If you own a Sonos Arc Ultra, Arc or Beam, we'd consider this the upgrade that changes what you feel in the room. Without one of those, the Sub 4 has nothing to connect to, so we'd skip it.

Which rooms justify $749.00, and which don't

At $749.00, the Sub 4 suits a dedicated movie or gaming room where low-end effects should land with force. The ported design and dual drivers give you that output, and the updated matte finish fits the look of the rest of the Sonos line.

At $749.00, it sits below the typical price of $863.80 seen over the last 90 days, so this is a sensible moment to add it if the soundbar is already in place. Owner reviews are plentiful, which makes the overall picture worth weighing alongside your own room.

Our advice is to skip it in a small bedroom or if you mostly watch dialogue-driven TV. The bass won't have room to work, and $749.00 is a lot for a change you won't notice.

From source to room

Confirm your soundbar is an Arc Ultra, Arc or Beam before ordering, since the Sub 4 pairs with those and not with non-Sonos gear.

Decide upright or on its side first, then measure the gap, because the sub needs airflow around the port and drivers.

If you want two subs for Arc Ultra or Arc, check that the app supports a second unit in your setup before buying the pair.

Spec sheet

ModelSUBG4US1BLK
ColorBlack

More Sonos guides