Bose SoundLink Max vs Marshall Kilburn II

Last updated: August 20, 2026

Short answer: the Bose SoundLink Max for better sound quality, the Marshall Kilburn II for the lower price. The Bose SoundLink Max ranks #17 of 77 large speakers at $309.99. The Marshall Kilburn II ranks #36 at $279, $30.99 cheaper.

The case for the Bose SoundLink Max: IP67 rated, dustproof and waterproof to 1m. The catch: Big peak in the upper bass, dipped midrange and lots of peaks and dips above the midrange.

On the Marshall Kilburn II side: 20W Class D amp + dual 8W tweeters. Watch for: Boosted upper bass, not very detailed, not as deep bass as competitors, upper mids peak.

Buy the Bose SoundLink Max if sound quality matters more than the price. Buy the Marshall Kilburn II if the price matters more than sound quality.

If water resistance matters to you, the Bose SoundLink Max at IP67 (brief submersion) holds up far better than the Marshall Kilburn II at IPX2 (light drips).

Bose SoundLink Max vs Marshall Kilburn II

Specifications Side By Side

Bose SoundLink Max Marshall Kilburn II
Price$309.99$279.00
Ranked#17 of 77 in Large Size Portable Bluetooth Speakers#36 of 77 in Large Size Portable Bluetooth Speakers
AppYesNo
Aux InputYesYes
Aux Latency33ms-
Bass Extension (-10dB)48Hz~58Hz
Battery Life20 hours (Manufacturer specified)20 hours (Manufacturer specified)
Built in MicrophoneNoYes
IP RatingIP67IPX2
Bluetooth Latency116ms-
Power BankYes (USB-C)No
Power InputUSB-CUSB-C
StereoPartially (1 tweeter)Yes
OmnidirectionalNoNo
Weight4.9 lbs / 2.2 kg5.5 lbs / 2.49 kg
Bluetooth CodecsSBCSBC
EQNoNo
Party ModeNoNo
TWSYesYes
Bluetooth Version5.3-
Dimensions10.4" x 4.7" x 4.1" (264.7 x 120.1 x 104.9 mm)9.6" x 6.4" x 5.5" (243 x 162 x 140 mm)
Drivers2x 2.5" (63.5mm) midrange drivers + 1x 0.79" (20mm) tweeter1x 4" (102mm) woofer + 2x 20mm dome tweeters
Output PowerSpecs not published by manufacturer36W
Digital Aux InputNoNo
Max Volume-102dB

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The Two Speakers In Full

Bose SoundLink Max ranking card

Pros: IP67 rated - dustproof and waterproof to 1m. Up to 20 hour battery; real-world testing found 43+ hours. Deep, rich bass with neutral tuning, app EQ. USB-C doubles as device charger. Sturdy carry handle.

Cons: Big peak in the upper bass, dipped midrange and lots of peaks and dips above the midrange. Bass not as deep as a Boom 2. Gets distorted above 80%. Self drains the battery about 20% a week.

AppYes
Aux InputYes
Aux Latency33ms
Bass Extension (-10dB)48Hz
Battery Life20 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Latency116ms
Bluetooth Version5.3
Built in MicrophoneNo
Digital Aux InputNo
Dimensions10.4" x 4.7" x 4.1" (264.7 x 120.1 x 104.9 mm)
Drivers2x 2.5" (63.5mm) midrange drivers + 1x 0.79" (20mm) tweeter
EQNo
IP RatingIP67
OmnidirectionalNo
Output PowerSpecs not published by manufacturer
Party ModeNo
Power BankYes (USB-C)
Power InputUSB-C
StereoPartially (1 tweeter)
TWSYes
Weight4.9 lbs / 2.2 kg

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Marshall Kilburn II: $279.00 Amazon

Marshall Kilburn II ranking card

Pros: 20W Class D amp + dual 8W tweeters. 20+ hour battery with quick-charge (20 min charges 3 hours of play). Rugged design with leather handle and reinforced corners, IPX2 rated. Thrives with rock music. Bluetooth 5.0 with 30ft range.

Cons: Boosted upper bass, not very detailed, not as deep bass as competitors, upper mids peak. Very low IPX2 water rating. AC charging

AppNo
Aux InputYes
Bass Extension (-10dB)~58Hz
Battery Life20 hours (Manufacturer specified)
Bluetooth CodecsSBC
Built in MicrophoneYes
Digital Aux InputNo
Dimensions9.6" x 6.4" x 5.5" (243 x 162 x 140 mm)
Drivers1x 4" (102mm) woofer + 2x 20mm dome tweeters
EQNo
IP RatingIPX2
Max Volume102dB
OmnidirectionalNo
Output Power36W
Party ModeNo
Power BankNo
Power InputUSB-C
StereoYes
TWSYes
Weight5.5 lbs / 2.49 kg

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