Harman Kardon Go + Play 3 vs W-King X20

Last updated: September 20, 2026

Short answer: the Harman Kardon Go + Play 3 on sound, the W-King X20 on output. The X20 claims 200W RMS and 330W peak, 112dB max volume, a 24-hour battery that doubles as a power bank and IPX6 waterproofing, but its response rises into rolled-off upper treble with peaks at 700Hz and 1.2kHz. The Go + Play 3 ranks #3 of 75 and is warm with boosted bass, though only a little over half as loud as the higher-rated boomboxes.

Harman Kardon Go + Play 3 vs W-King X20

On the Harman Kardon Go + Play 3 side: Warm sound with boosted bass. The catch: Just a little over half as loud as the higher rated boomboxes.

The case for the W-King X20: 200W RMS output with 330W peak power, 112dB max volume, exceptional 24-hour battery life with power bank, IPX6 waterproof. The tradeoff: Rising frequency response but upper treble rolled off, 700Hz and 1.2kHz peaks.

Buy the Harman Kardon Go + Play 3. It is rated higher for sound quality, and the $165.02 you would save on the W-King X20 does not close the gap.

There is a real gap in water resistance: the W-King X20 at IPX6 (powerful water jets) against the Harman Kardon Go + Play 3, which has no water resistance.

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

Buy the Harman Kardon Go + Play 3 at Amazon ($385) →Buy the W-King X20 at Amazon ($219.98) →

Specifications Side By Side

Harman Kardon Go + Play 3 W-King X20
Price$385$219.98 after coupon
Ranked#3 of 75 in Boombox Size Portable Bluetooth Speakers#30 of 75 in Boombox Size Portable Bluetooth Speakers
AppYes (Harman Kardon One app)Yes (W-King app)
Aux Latency112ms-
Bass Extension (-10dB)35Hz~42Hz
Battery Life8 hours (Manufacturer specified)24 hours (Manufacturer specified)
Built-in MicrophoneYesNo
EQYes (App EQ)Yes (App + button modes)
IP RatingNoneIPX6
Bluetooth Latency120ms-
Maximum SPL103dB (measured by Alan Ross Reviews)112dB (measured by Alan Ross Reviews)
Power InputAC Power brickUSB-C
StereoYesYes
OmnidirectionalNoNo
TWSYesYes
Weight10.4 lbs (4.7 kg)15.9 lbs (7200 g)
Bluetooth CodecsSBC, AACSBC
Power BankYesYes (USB-A)
Party ModeNoNo
USB PlaybackNoYes
Bluetooth Version5.25.4
Amplifier Power160W RMS330W peak / 200W RMS
Dimensions17.3" x 9.4" x 7.6" (439 x 240 x 192 mm)19.9" x 8.5" x 10.6" (506 x 217 x 270 mm)
Aux InputYesYes
Drivers1x 130mm (5") subwoofer + 2x 70mm midrange drivers + 2x 20mm tweeters7.5" subwoofer + drivers
Digital Aux InputNoNo
MicroSD Playback-Yes
Buy the Harman Kardon Go + Play 3 at Amazon ($385) →Buy the W-King X20 at Amazon ($219.98) →

More top alternatives to Harman Kardon Go + Play 3:

Prices on this page were last checked September 23, 2026 at 11:24 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 eBay

Harman Kardon Go + Play 3 ranking card

Pros: Warm sound with boosted bass. Deepest bass out of any speaker in this size. Sound is more natural than the Go + Play2. 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.

Full Harman Kardon Go + Play 3 review and specifications →

Amplifier Power160W RMS
AppYes (Harman Kardon One app)
Aux InputYes
Aux Latency112ms
Bass Extension (-10dB)35Hz
Battery Life8 hours (Manufacturer specified)
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
TWSYes
USB PlaybackNo
Weight10.4 lbs (4.7 kg)
Check current price at Amazon ($385) →Search eBay for Harman Kardon Go + Play 3 →

W-King X20: $219.98 after coupon Amazon eBay

W-King X20 ranking card

Pros: 200W RMS output with 330W peak power, 112dB max volume, exceptional 24-hour battery life with power bank, IPX6 waterproof, EQ with app control and button modes, 7.5-inch subwoofer, Bluetooth 5.3, dual pairing, MicroSD and USB playback, AUX input, TWS stereo mode with 240W combined. Measured bass extension of ~42Hz (-10dB).

Cons: Rising frequency response but upper treble rolled off, 700Hz and 1.2kHz peaks

Full W-King X20 review and specifications →

Amplifier Power330W peak / 200W RMS
AppYes (W-King app)
Aux InputYes
Bass Extension (-10dB)~42Hz
Battery Life24 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Version5.4
Built-in MicrophoneNo
Digital Aux InputNo
Dimensions19.9" x 8.5" x 10.6" (506 x 217 x 270 mm)
Drivers7.5" subwoofer + drivers
EQYes (App + button modes)
IP RatingIPX6
Maximum SPL112dB (measured by Alan Ross Reviews)
MicroSD PlaybackYes
OmnidirectionalNo
Party ModeNo
Power BankYes (USB-A)
Power InputUSB-C
StereoYes
TWSYes
USB PlaybackYes
Weight15.9 lbs (7200 g)
Check current price at Amazon ($219.98) →Search eBay for W-King X20 →