Marshall Kilburn II vs Zealot S67

Last updated: October 12, 2026

Short answer: the Marshall Kilburn II. It ranks #43 of 105 large speakers by sound quality, rated 3.8/5, at $279. The Zealot S67 ranks #104, rated 2.0/5, at $70.94, $208.06 cheaper, which does not close the gap in sound quality.

Marshall Kilburn II vs Zealot S67

The Marshall Kilburn II is the better-sounding option. 20W Class D amp + dual 8W tweeters. The tradeoff: Boosted upper bass, not very detailed, not as deep bass as competitors, upper mids peak.

The Zealot S67 is the tougher pick. It offers a lot of practical hardware for a 5.3 lbs (2.4 kg) budget speaker: IPX6 water resistance, USB-C charging, aux and microSD playback, speakerphone, a claimed 20-hour battery and TWS pairing for a second unit. It is rated IPX6 against IPX2 for the Marshall Kilburn II. The tradeoff: Sound quality is the catch.

Buy the Marshall Kilburn II. It is rated higher for sound quality, and the $208.06 you would save on the Zealot S67 does not close the gap.

Still deciding? The full Portable Bluetooth rankings cover every ranked option.

Check Marshall Kilburn II price at Amazon ($279.00) →Check Zealot S67 price at AliExpress ($70.94) →

Specifications Side By Side

Marshall Kilburn II Zealot S67
Price$279.00$70.94
Ranked#43 of 105 in Large Size Portable Bluetooth Speakers#104 of 105 in Large Size Portable Bluetooth Speakers
Aux InputYesYes
Bass Extension (-10dB)~58Hz-
Battery Life20 hours (Manufacturer specified)20 hours (Manufacturer specified)
IP RatingIPX2IPX6
Weight5.5 lbs (2.49 kg)5.3 lbs (2.4 kg)
AppNoNo
BluetoothYesYes
Bluetooth CodecsSBCSBC
Built-in MicrophoneYesYes
EQNoNo
Party ModeNoNo
Power BankNoNo
Power InputUSB-CUSB-C
StereoYesYes
OmnidirectionalNoNo
TWSYesYes
Amplifier Power36W60W
Dimensions9.6” x 6.4” x 5.5” (243 x 162 x 140 mm)11.6” x 4.8” x 5.2” (294 x 122 x 132 mm)
Drivers1x 4” (102mm) woofer + 2x 20mm dome tweeters60W: Dual drivers + passive radiator
Maximum SPL102dB (Manufacturer specified)-
Digital Aux InputNoNo
Bluetooth Version5.05.2
StrapYes (built-in strap)-
MicroSD Playback-Yes
Check Marshall Kilburn II price at Amazon ($279.00) →Check Zealot S67 price at AliExpress ($70.94) →

How Marshall Kilburn II compares with other leading options:

Prices on this page were last checked October 12, 2026 at 4:13 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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The Two Speakers In Full

Marshall Kilburn II: $279.00 Amazon $279.00 eBay

Marshall Kilburn II ranking card

Newer model: the Marshall Kilburn III, ranked higher, rated 3.8/5, released May 2025. It adds power bank charging, app control, adjustable EQ and party mode, but drops the built-in mic. Battery life goes from 20 to 50 hours. Water resistance goes from IPX2 to IP54. See every Marshall Portable Speakers generation.

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. Measured bass extension of ~58Hz (-10dB).

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

Full Marshall Kilburn II review and specifications →

ReleasedAug 2018 (8 years ago)
Amplifier Power36W
AppNo
Aux InputYes
Bass Extension (-10dB)~58Hz
Battery Life20 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC
Bluetooth Version5.0
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
Maximum SPL102dB (Manufacturer specified)
OmnidirectionalNo
Party ModeNo
Power BankNo
Power InputUSB-C
StereoYes
StrapYes (built-in strap)
TWSYes
Weight5.5 lbs (2.49 kg)
Check current price at Amazon ($279.00) →Search eBay for Marshall Kilburn II →

Zealot S67: $70.94 AliExpress $70.94 eBay

Zealot S67 ranking card

Pros: It offers a lot of practical hardware for a 2.4kg budget speaker: IPX6 water resistance, USB-C charging, aux and microSD playback, speakerphone, a claimed 20-hour battery and TWS pairing for a second unit. The large enclosure and dual-driver/passive-radiator layout can provide useful party-level volume.

Cons: Sound quality is the catch. Independent reviewer comparisons report obvious distortion once volume rises past roughly halfway, little true deep bass, and a rolled-off, low-detail treble. There is no app or real EQ to correct that balance, so its long feature list does not make it a good pick for attentive music listening.

Full Zealot S67 review and specifications →

ReleasedSep 2021 (5 years ago)
Amplifier Power60W
AppNo
Aux InputYes
Battery Life20 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC
Bluetooth Version5.2
Built-in MicrophoneYes
Digital Aux InputNo
Dimensions11.6” x 4.8” x 5.2” (294 x 122 x 132 mm)
Drivers60W: Dual drivers + passive radiator
EQNo
IP RatingIPX6
MicroSD PlaybackYes
OmnidirectionalNo
Party ModeNo
Power BankNo
Power InputUSB-C
StereoYes
TWSYes
Weight5.3 lbs (2.4 kg)
Check current price at AliExpress ($70.94) →Search eBay for Zealot S67 →