Harman Kardon Go + Play 3 vs Zealot ZE01

Last updated: October 12, 2026

Short answer: the Harman Kardon Go + Play 3. It ranks #3 of 98 boombox speakers by sound quality, rated 4.4/5, at $385. The Zealot ZE01 ranks #36, rated 3.7/5, at $159.90, $225.10 cheaper, which does not close the gap in sound quality.

Harman Kardon Go + Play 3 vs Zealot ZE01

The Harman Kardon Go + Play 3 is the better-sounding, deeper-bass option. Warm sound with boosted bass. Its bass reaches about 35Hz before falling 10dB, against 45Hz for the Zealot ZE01. At 10.4 lbs (4.7 kg) it weighs noticeably less than the Zealot ZE01 at 13.2 lbs (6 kg). It supports AAC Bluetooth, which the Zealot ZE01 lacks. Watch for: Just a little over half as loud as the higher rated boomboxes.

The Zealot ZE01 is the longer-running, tougher option. Appears to be the same internals as the Zealot S95. It is rated for 40 hours of battery against 8 for the Harman Kardon Go + Play 3. It is rated IPX6, while the Harman Kardon Go + Play 3 has no water resistance. The catch: A little rolled off up top and not that balanced through the rest of the range.

Buy the Harman Kardon Go + Play 3. It is rated higher for sound quality, and the $225.10 saving on the Zealot ZE01 is not enough to make up the difference.

Want more options? Browse the full Portable Bluetooth rankings.

Check Harman Kardon Go + Play 3 price at Amazon ($385) →Check Zealot ZE01 price at Amazon ($159.90) →

Specifications Side By Side

Harman Kardon Go + Play 3 Zealot ZE01
Price$385$159.90
Ranked#3 of 98 in Boombox Size Portable Bluetooth Speakers#36 of 98 in Boombox Size Portable Bluetooth Speakers
AppYes (Harman Kardon One app)No
Aux Latency112ms-
Bass Extension (-10dB)35Hz45Hz
Battery Life8 hours (Manufacturer specified)40 hours (Manufacturer specified)
Built-in MicrophoneYesNo
EQYes (App EQ)Yes (multiple modes)
IP RatingNoneIPX6
Bluetooth Latency120ms-
Maximum SPL103dB (measured by Alan Ross Reviews)-
Power InputAC Power brickUSB-C
StereoYesYes
OmnidirectionalNoNo
TWSYesYes
Weight10.4 lbs (4.7 kg)13.2 lbs (6.0 kg)
BluetoothYesYes
Bluetooth CodecsSBC, AACSBC
Power BankYesYes (USB-A + USB-C)
Party ModeNoNo
USB PlaybackNoYes
Bluetooth Version5.25.4
Amplifier Power160W RMS120W RMS / 150W peak
Dimensions17.3” x 9.4” x 7.6” (439 x 240 x 192 mm)13.1” x 11.2” x 8.1” (332 x 284 x 207 mm)
Aux InputYesYes
Drivers1x 130mm (5”) subwoofer + 2x 70mm midrange drivers + 2x 20mm tweetersDual 120mm speakers + dual 42mm speakers
Digital Aux InputNoNo
StrapNo-
MicroSD Playback-Yes
Check Harman Kardon Go + Play 3 price at Amazon ($385) →Check Zealot ZE01 price at Amazon ($159.90) →

How Harman Kardon Go + Play 3 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

Harman Kardon Go + Play 3: $385 Amazon $385 eBay

Harman Kardon Go + Play 3 ranking card

Older model: the Harman Kardon Go + Play 2 (ranked lower, rated 3.9/5). See every Harman Kardon Go + Play generation.

Pros: Warm sound with boosted bass. Deepest bass out of any speaker in this size. Sound is more natural than the Harman Kardon Go + Play 2. An aux input, a built-in microphone, a power bank function, stereo pairing and hidden button combinations for adjusting bass and treble. Measured bass extension of 35Hz (-10dB).

Cons: Just a little over half as loud as the higher rated boomboxes. Only 8 hours of battery at medium volume. No water rating.

Setup: Use the hidden EQ modes to adjust the bass up when outside and down when inside. To adjust bass, quickly press the bluetooth and volume down buttons together, the number of light flashes tell you what mode you’re in. To adjust treble, quickly press the volume up and phone buttons at the same time, the number of yellow flashes on the light tell you what mode you are in.

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Full Harman Kardon Go + Play 3 review and specifications →

ReleasedJul 2023 (3 years ago)
Amplifier Power160W RMS
AppYes (Harman Kardon One app)
Aux InputYes
Aux Latency112ms
Bass Extension (-10dB)35Hz
Battery Life8 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC, AAC
Bluetooth Latency120ms
Bluetooth Version5.2
Built-in MicrophoneYes
Digital Aux InputNo
Dimensions17.3” x 9.4” x 7.6” (439 x 240 x 192 mm)
Drivers1x 130mm (5”) subwoofer + 2x 70mm midrange drivers + 2x 20mm tweeters
EQYes (App EQ)
IP RatingNone
Maximum SPL103dB (measured by Alan Ross Reviews)
OmnidirectionalNo
Party ModeNo
Power BankYes
Power InputAC Power brick
StereoYes
StrapNo
TWSYes
USB PlaybackNo
Weight10.4 lbs (4.7 kg)
Check current price at Amazon ($385) →Search eBay for Harman Kardon Go + Play 3 →

Zealot ZE01: $159.90 Amazon $159.90 AliExpress $126.02 eBay

Zealot ZE01 ranking card

Pros: Appears to be the same internals as the Zealot S95. Measured bass extension of 45Hz (-10dB).

Cons: A little rolled off up top and not that balanced through the rest of the range. Clarity isn’t as good as better speakers.

Full Zealot ZE01 review and specifications →

ReleasedJan 2025 (1 year ago)
Amplifier Power120W RMS / 150W peak
AppNo
Aux InputYes
Bass Extension (-10dB)45Hz
Battery Life40 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC
Bluetooth Version5.4
Built-in MicrophoneNo
Digital Aux InputNo
Dimensions13.1” x 11.2” x 8.1” (332 x 284 x 207 mm)
DriversDual 120mm speakers + dual 42mm speakers
EQYes (multiple modes)
IP RatingIPX6
MicroSD PlaybackYes
OmnidirectionalNo
Party ModeNo
Power BankYes (USB-A + USB-C)
Power InputUSB-C
StereoYes
TWSYes
USB PlaybackYes
Weight13.2 lbs (6.0 kg)
Check current price at Amazon ($159.90) →Check current price at AliExpress ($126.02) →Search eBay for Zealot ZE01 →