Soundcore Boom 2 Plus vs JBL Authentics 300

Last updated: August 18, 2026

Short answer: the Soundcore Boom 2 Plus. It ranks #26 of 73 boombox speakers by sound quality at $169.98; the JBL Authentics 300 ranks #30 and costs $299.95, so there is not much of a tradeoff to weigh.

The case for the Soundcore Boom 2 Plus: Quite a bit lighter than most of the other boombox size speakers. The tradeoff: Warm tuning meaning a rolled off treble and some upper bass boost.

What the JBL Authentics 300 gets right: Integrates both Amazon Alexa and Google Assistant simultaneously (rare for smart speakers). The catch: Narrow sounding, bass not as deep as others.

Buy the Soundcore Boom 2 Plus. It ranks higher for sound quality than the JBL Authentics 300 and costs less, so there is no real case for the other one.

If battery life is a priority, the Soundcore Boom 2 Plus is rated for 20 hours versus 8 hours for the JBL Authentics 300.

If water resistance matters to you, the Soundcore Boom 2 Plus at IPX7 (brief submersion) holds up far better than the JBL Authentics 300 at no water resistance.

Soundcore Boom 2 Plus vs JBL Authentics 300

Specifications Side By Side

Soundcore Boom 2 Plus JBL Authentics 300
Price$169.98$299.95
Ranked#26 of 73 in Boombox Size Portable Bluetooth Speakers#30 of 73 in Boombox Size Portable Bluetooth Speakers
AppYesYes
Aux InputYesNo
Bass Extension (-10dB)39Hz45Hz
Battery Life20 hours (Manufacturer specified)8 hours (Manufacturer specified)
EQYes (Pro EQ + presets)Yes (App EQ)
IP RatingIPX7None
Max Volume111dB100dB
MicroSD PlaybackNoNo
Party ModeYes (PartyCast 2.0)Yes (Wi-Fi Multi-Room)
Power BankYes (USB-C, 5V/2A)No
Power InputUSB-CAC Power cable
StereoYesPartially (1 woofer)
OmnidirectionalNoNo
TWSYesYes
Weight8.4 lbs / 3.8 kg10.8 lbs / 4.9 kg
Bluetooth CodecsSBC, AACSBC
USB PlaybackNoYes
Built in MicrophoneYesYes
Output Power140W100W
Dimensions17.3" x 9.1" x 5.9" (440 x 230 x 150 mm)13.5" x 7.7" x 7.1" (342 x 195.6 x 180.3 mm)
Drivers2x 114mm (4.5") woofers + 2x 19mm (0.75") tweeters1" tweeter + 4" woofer + passive radiators
Digital Aux InputNoNo
Wifi-Yes

More useful head-to-heads from the same speaker class:

The Two Speakers In Full

Soundcore Boom 2 Plus: $169.98 Amazon Bhphotovideo

Soundcore Boom 2 Plus ranking card

Pros: Quite a bit lighter than most of the other boombox size speakers. This speaker will likely move up as we get a good EQ tune that makes it a lot more neutral.

Cons: Warm tuning meaning a rolled off treble and some upper bass boost. Reasonably deep bass, but not as good as the top ranked.

AppYes
Aux InputYes
Bass Extension (-10dB)39Hz
Battery Life20 hours (Manufacturer specified)
Bluetooth CodecsSBC, AAC
Built in MicrophoneYes
Digital Aux InputNo
Dimensions17.3" x 9.1" x 5.9" (440 x 230 x 150 mm)
Drivers2x 114mm (4.5") woofers + 2x 19mm (0.75") tweeters
EQYes (Pro EQ + presets)
IP RatingIPX7
Max Volume111dB
MicroSD PlaybackNo
OmnidirectionalNo
Output Power140W
Party ModeYes (PartyCast 2.0)
Power BankYes (USB-C, 5V/2A)
Power InputUSB-C
StereoYes
TWSYes
USB PlaybackNo
Weight8.4 lbs / 3.8 kg

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JBL Authentics 300: $299.95 Amazon

JBL Authentics 300 ranking card

Pros: Integrates both Amazon Alexa and Google Assistant simultaneously (rare for smart speakers). Retro seventies design with leather and Quadrex grille. 100-watt amp, carries well with leather-trimmed handle. Rechargeable battery rated ~8 hours.

Cons: Narrow sounding, bass not as deep as others. Peaky upper mids. No TWS. No IP rating. Not as loud as others. Not much battery life.

AppYes
Aux InputNo
Bass Extension (-10dB)45Hz
Battery Life8 hours (Manufacturer specified)
Bluetooth CodecsSBC
Built in MicrophoneYes
Digital Aux InputNo
Dimensions13.5" x 7.7" x 7.1" (342 x 195.6 x 180.3 mm)
Drivers1" tweeter + 4" woofer + passive radiators
EQYes (App EQ)
IP RatingNone
Max Volume100dB
MicroSD PlaybackNo
OmnidirectionalNo
Output Power100W
Party ModeYes (Wi-Fi Multi-Room)
Power BankNo
Power InputAC Power cable
StereoPartially (1 woofer)
TWSYes
USB PlaybackYes
Weight10.8 lbs / 4.9 kg
WifiYes

As an eBay Partner, we may be compensated if you make a purchase.