Sony ULT TOWER 9AC vs JBL PartyBox 720

Tested using Methodology v0.8

Updated Feb 05, 2026 03:02 PM

This review is in Early access

See Sony ULT TOWER 9AC Review

Amazon.com

Bluetooth Yes

Wi-Fi No

Speakerphone No

Voice Assistant No

Battery Powered No

Bluetooth Locked

Wi-Fi Locked

Speakerphone Locked

Voice Assistant Locked

Battery Powered Locked

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Our Verdict

Sony ULT TOWER 9AC

JBL PartyBox 720

Full comparison details regarding individual product score sets can be found in the section below

Variants

ULT TOWER 9 (Black)
ULT TOWER 9AC (Black)

PartyBox 720 (Black)

Review

See JBL PartyBox 720 Review

Check Price

Black

ULT TOWER 9AC

Sony

Black

PartyBox 720

Amazon.com

Black

ULT TOWER 9

Black

PartyBox 720

Black

PartyBox 720

B&H

Black

PartyBox 720

JBL

Black

PartyBox 720

Walmart.com

Main Differences for

Music

Threshold

0.10

Music

7.5

0.0

No major differences between these speakers for music. See full list of tests below.

Full Comparison

Music

7.5

0.0

Videos/Movies

6.6

0.0

Podcasts

5.8

0.0

Voice Assistant

2.7

0.0

Outdoors

5.6

0.0

Design

Style

Style Photo

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RGB Lights

Yes

Locked

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Portability

0.0

N/A

Dimensions Photo

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Volume

9,730 in³ (159,438 cm³)

Lock in³ (Lock cm³)

Weight

63.3 lbs (28.7 kg)

Lock lbs (Lock kg)

Power Source

AC Only

Locked

One-Hand Carry

Locked

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Build Quality

6.4

N/A

Build Quality Photo

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Material Quality

Good

Locked

Water Resistance

Locked

Dust Resistance

Unspecified

Locked

Impact Resistance

Unspecified

Locked

Floats In Water

Locked

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Controls

6.9

N/A

Controls Photo

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Controls Photo 2

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Ease Of Use

Great

Locked

Feedback

Good

Locked

Music Play/Pause

Yes (Tactile)

Locked

Call Answer/End

Locked

Volume Up/Down

Yes (Tactile)

Locked

Track Next/Previous

Yes (Tactile)

Locked

Microphone On/Off

Locked

Additional Controls

Yes

Locked

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In The Box

In The Box Photo

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Sound

Frequency Response Accuracy

7.9

N/A

Frequency Response Graph

Preview Graph

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Slope

-1.26

Lock

Std. Err.

4.07 dB

Lock dB

Low-Frequency Extension

29.5 Hz

Lock Hz

High-Frequency Extension

18.0 kHz

Lock kHz

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Raw Frequency Response

Raw Frequency Response Graph

Preview Graph

SAMPLE

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Binaural Recording @ 1m

Binaural Recording @ 2m

Soundstage

6.3

N/A

Directivity Graph

Preview Graph

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Directivity Index

6.80 dB

Lock dB

Stereo

Yes

Locked

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Dynamics

7.6

N/A

Dynamic Range Compression

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SPL @ Max Volume

110.0 dB SPL

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DRC @ Max Volume

4.69 dB

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Active Features

Battery

0.0

N/A

Battery Life

N/A

Lock hrs

Charge Time

N/A

Lock hrs

Power Saving

Locked

Charging Port

No Battery

Locked

Battery Powered

Locked

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Voice Assistant

0.0

N/A

Alexa

Locked

Google Assistant

Locked

Speakerphone

Locked

Siri

Locked

Voice Assistant

Locked

Voice Activation

Locked

Microphone Mute

No Microphone

Locked

Far-Field Performance

No Microphone

Locked

Ambient Noise Performance

No Microphone

Locked

App

7.9

N/A

App Picture

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App Name

Sound Connect

Locked

iOS

Yes

Locked

Android

Yes

Locked

EQ

Graphic + Presets

Locked

Stereo Pair Mode

Yes

Locked

Party Mode

Yes

Locked

Multi-Room

Locked

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Connectivity

Wired

Aux Input

Yes

Locked

USB Audio

Yes

Locked

Other Ports

Yes

Locked

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Bluetooth

8.5

N/A

Bluetooth

Yes

Locked

Bluetooth Version

5.3

Locked

Bluetooth iOS Latency

82 ms

Lock ms

Bluetooth Android Latency

146 ms

Lock ms

Bluetooth Range

328.1 ft (100.0 m)

Lock ft (Lock m)

Multi-Device Pairing

2 Devices

Locked

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Wi-Fi

0.0

N/A

Wi-Fi Version

No Wi-Fi

Locked

Wi-Fi Frequency Band

No Wi-Fi

Locked

Wi-Fi

Locked

Apple AirPlay

Locked

AirPlay Latency

N/A

Google Chromecast

Locked

Chromecast Latency

N/A

Check Price

Black

ULT TOWER 9AC

Sony

Black

PartyBox 720

Amazon.com

Black

ULT TOWER 9

Black

PartyBox 720

Black

PartyBox 720