Harman Kardon Onyx Studio 8 vs W-King D20

Last updated: October 12, 2026

Short answer: the Harman Kardon Onyx Studio 9, if you are buying new. The Harman Kardon Onyx Studio 8 ranks higher than the W-King D20 (#12 vs #39 of 98 boombox speakers) but is discontinued; its replacement, the Harman Kardon Onyx Studio 9, is rated 4.1/5 at $189.99 and is still sold new.

Harman Kardon Onyx Studio 8 vs W-King D20

The Harman Kardon Onyx Studio 8 is the better-sounding, deeper-bass pick. Claimed 8 hours (manufacturer specified) battery life and up to 96db make its feature set practical for its intended room or portable use. Its bass reaches about 35Hz before falling 10dB, against 42Hz for the W-King D20. At 7.3 lbs (3.3 kg) it weighs much less than the W-King D20 at 14.3 lbs (6.5 kg). The catch: Warm tuning with boosted bass, not as loud as others, and no water resistance rating.

The W-King D20 is the louder, longer-running choice. Comes with 2 wireless microphones. Alan Ross Reviews measured it at 112dB at full volume, against 96dB for the Harman Kardon Onyx Studio 8. It is rated for 24 hours of battery against 8 for the Harman Kardon Onyx Studio 8. It is rated IPX6, while the Harman Kardon Onyx Studio 8 has no water resistance. The catch: Rising frequency response but upper treble rolled off, 700Hz and 1.2kHz peaks.

Buy the Harman Kardon Onyx Studio 9, the replacement for the discontinued Harman Kardon Onyx Studio 8; it is rated higher for sound quality than the W-King D20.

Want more options? Browse the full Portable Bluetooth rankings.

Check Harman Kardon Onyx Studio 8 price at Amazon ($199.00) →Check W-King D20 price at AliExpress ($193) →

Specifications Side By Side

Harman Kardon Onyx Studio 8 W-King D20
Price$199.00 Discontinued$193
Ranked#12 of 98 in Boombox Size Portable Bluetooth Speakers#39 of 98 in Boombox Size Portable Bluetooth Speakers
Aux InputYesYes
Aux Latency42ms-
Bass Extension (-10dB)35Hz~42Hz
Battery Life8 hours (Manufacturer specified)24 hours (Manufacturer specified)
Built-in MicrophoneYesNo
IP RatingNoneIPX6
Bluetooth Latency175ms-
Maximum SPL96dB (measured by Alan Ross Reviews)112dB (measured by Alan Ross Reviews)
Power InputDC Barrel Connector (19V/2.1A)USB-C
StereoPartially (1 woofer)Yes
OmnidirectionalNoNo
TWSYesYes
Weight7.3 lbs (3.3 kg)14.3 lbs (6500 g)
AppYes (Harman Kardon One app)Yes (W-King app)
BluetoothYesYes
Bluetooth CodecsSBCSBC
Power BankNoYes
EQYes (App EQ)Yes (App + button modes)
Party ModeNoNo
USB PlaybackNoYes
Bluetooth Version5.25.3
Amplifier Power50W RMS200W
Dimensions10.6” x 11.9” x 6.3” (268 x 302.5 x 159.5 mm)19.9” x 8.5” x 10.6” (506 x 217 x 270 mm)
Drivers120mm woofer + 2x 20mm tweeters4.5” + 3.5” drivers + 1.2” tweeters
Digital Aux InputNoNo
StrapNo-
MicroSD Playback-Yes
Wireless Microphones-Yes
Check Harman Kardon Onyx Studio 8 price at Amazon ($199.00) →Check W-King D20 price at AliExpress ($193) →

How Harman Kardon Onyx Studio 8 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 Onyx Studio 8: $199.00 Discontinued Amazon $199.00 eBay

Harman Kardon Onyx Studio 8 ranking card

Newer model: the Harman Kardon Onyx Studio 9, ranked lower, rated 4.1/5, released Dec 2024. It adds party mode, but drops the aux input.

Older models: the Harman Kardon Onyx Studio 7 (ranked lower, rated 4.1/5), the Harman Kardon Onyx Studio 6 (ranked lower, rated 4.1/5), the Harman Kardon Onyx Studio 5 (ranked lower, rated 3.9/5) and the Harman Kardon Onyx Studio 4 (rated 3.3/5). See every Harman Kardon Onyx Studio generation.

Pros: At 3.3 kg, Harman Kardon Onyx Studio 8 combines a 120mm woofer and 2x 20mm tweeters with Bluetooth and aux. Claimed 8 hours (manufacturer specified) battery life and up to 96db make its feature set practical for its intended room or portable use. A built-in microphone and the Harman Kardon One app with EQ. Measured bass extension of 35Hz (-10dB).

Cons: Bass is limited by its 35Hz specification. Warm tuning with boosted bass, not as loud as others, and no water resistance rating. Discontinued.

Full Harman Kardon Onyx Studio 8 review and specifications →

ReleasedSep 2022 (4 years ago)
Amplifier Power50W RMS
AppYes (Harman Kardon One app)
Aux InputYes
Aux Latency42ms
Bass Extension (-10dB)35Hz
Battery Life8 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC
Bluetooth Latency175ms
Bluetooth Version5.2
Built-in MicrophoneYes
Digital Aux InputNo
Dimensions10.6” x 11.9” x 6.3” (268 x 302.5 x 159.5 mm)
Drivers120mm woofer + 2x 20mm tweeters
EQYes (App EQ)
IP RatingNone
Maximum SPL96dB (measured by Alan Ross Reviews)
OmnidirectionalNo
Party ModeNo
Power BankNo
Power InputDC Barrel Connector (19V/2.1A)
StereoPartially (1 woofer)
StrapNo
TWSYes
USB PlaybackNo
Weight7.3 lbs (3.3 kg)
Check current price at Amazon ($199.00) →Search eBay for Harman Kardon Onyx Studio 8 →

W-King D20: $193 AliExpress $193 eBay

W-King D20 ranking card

Pros: Comes with 2 wireless microphones. Measured bass extension of ~42Hz (-10dB).

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

Full W-King D20 review and specifications →

ReleasedFeb 2024 (2 years ago)
Amplifier Power200W
AppYes (W-King app)
Aux InputYes
Bass Extension (-10dB)~42Hz
Battery Life24 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC
Bluetooth Version5.3
Built-in MicrophoneNo
Digital Aux InputNo
Dimensions19.9” x 8.5” x 10.6” (506 x 217 x 270 mm)
Drivers4.5” + 3.5” drivers + 1.2” tweeters
EQYes (App + button modes)
IP RatingIPX6
Maximum SPL112dB (measured by Alan Ross Reviews)
MicroSD PlaybackYes
OmnidirectionalNo
Party ModeNo
Power BankYes
Power InputUSB-C
StereoYes
TWSYes
USB PlaybackYes
Weight14.3 lbs (6500 g)
Wireless MicrophonesYes
Check current price at AliExpress ($193) →Search eBay for W-King D20 →