Soundcore Boom Go 3i vs Marshall Willen II

Last updated: August 18, 2026

Short answer: the Soundcore Boom Go 3i. It ranks #2 of 47 small speakers by sound quality at $79.99; the Marshall Willen II ranks #11 and costs $89.99, so there is not much of a tradeoff to weigh.

The case for the Soundcore Boom Go 3i: IP68 rated (full submersion + dustproof). The tradeoff: Sounds a bit piercing and metallic.

On the Marshall Willen II side: More balanced than the first Willen, no sharp treble. Set against that: Not that deep of bass.

Buy the Soundcore Boom Go 3i. It ranks higher for sound quality than the Marshall Willen II and costs less, so there is no real case for the other one.

Soundcore Boom Go 3i vs Marshall Willen II

Specifications Side By Side

Soundcore Boom Go 3i Marshall Willen II
Price$79.99$89.99
Ranked#2 of 47 in Small Size Portable Bluetooth Speakers#11 of 47 in Small Size Portable Bluetooth Speakers
AppYesYes
Aux InputNoNo
Battery Life24 hours (Manufacturer specified)17 hours (Manufacturer specified)
Bluetooth CodecsSBCSBC
Built in MicrophoneYesYes
EQYesYes
IP RatingIP68IP67
Party ModeYes (Auracast)No
Power BankYes (USB-C)No
Power InputUSB-CUSB-C
StereoNoNo
OmnidirectionalNoNo
TWSYesNo
Weight0.8 lbs / 380 g0.8 lbs / 360 g
Bluetooth Version6.05.3
Output Power15W10W
Dimensions4" x 4.2" x 1.8" (102.1 x 105.9 x 45.5 mm)3.9" x 1.7" x 3.9" (99 x 43 x 99 mm)
Drivers25mm tweeter + 42mm woofer + passive radiators2" (51mm) full-range with dual passive radiators
Max Volume92dB-
Digital Aux InputNoNo
Bass Extension (-10dB)-70Hz
Frequency Response-75Hz - 20kHz (Manufacturer specified)
Charging Time-2.5 hours

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

The Two Speakers In Full

Soundcore Boom Go 3i: $79.99 Amazon Aliexpress

Soundcore Boom Go 3i ranking card

Pros: IP68 rated (full submersion + dustproof). ~24 hour battery life. RGB light strip syncs to the music. USB-C port doubles as a power bank for charging your phone.

Cons: Sounds a bit piercing and metallic. Bass knocks a little bit. Peak at 10khz

Setup: Try out Oluv’s EQ which slightly improves the sound

AppYes
Aux InputNo
Battery Life24 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Version6.0
Built in MicrophoneYes
Digital Aux InputNo
Dimensions4" x 4.2" x 1.8" (102.1 x 105.9 x 45.5 mm)
Drivers25mm tweeter + 42mm woofer + passive radiators
EQYes
IP RatingIP68
Max Volume92dB
OmnidirectionalNo
Output Power15W
Party ModeYes (Auracast)
Power BankYes (USB-C)
Power InputUSB-C
StereoNo
TWSYes
Weight0.8 lbs / 380 g

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Marshall Willen II: $89.99 Amazon

Marshall Willen II ranking card

Pros: More balanced than the first Willen, no sharp treble

Cons: Not that deep of bass. Fairly low max output vs pricier speakers; midrange can sound a bit congested at volume. No aux input.

AppYes
Aux InputNo
Bass Extension (-10dB)70Hz
Battery Life17 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Version5.3
Built in MicrophoneYes
Charging Time2.5 hours
Digital Aux InputNo
Dimensions3.9" x 1.7" x 3.9" (99 x 43 x 99 mm)
Drivers2" (51mm) full-range with dual passive radiators
EQYes
Frequency Response75Hz - 20kHz (Manufacturer specified)
IP RatingIP67
OmnidirectionalNo
Output Power10W
Party ModeNo
Power BankNo
Power InputUSB-C
StereoNo
TWSNo
Weight0.8 lbs / 360 g

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