Harman Kardon Onyx Studio 9 vs Soundcore Boom 2 Plus 

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Selected Item Harman Kardon Onyx Studio 9KSh 27,500.00Buy now	× Soundcore Boom 2 Plus KSh 28,700.00Buy now

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At a glance

Key specifications and important differences. Full details follow below.

Feature	Harman Kardon Onyx Studio 9	Soundcore Boom 2 Plus
Price	KSh 27,500.00	KSh 28,700.00
Battery	4722mAh Li-ion, 3.63V, up to 8 hours playtime	—
Weight	3.36kg	3.8 kg (8.38 lbs)

Full specifications

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SpecificationHarman Kardon Onyx Studio 9Soundcore Boom 2 Plus 

General

Specification	Harman Kardon Onyx Studio 9	Soundcore Boom 2 Plus
Brand	Harman Kardon	Soundcore
Model	Onyx Studio 9	Boom 2 Plus
Type	Portable Bluetooth Speaker	Portable Bluetooth Speaker
Color	Black, Gray	—

Design

Specification	Harman Kardon Onyx Studio 9	Soundcore Boom 2 Plus
Dimensions	289.2 x 287.5 x 130 mm	17.4 × 5.94 × 8.98 inches
Weight	3.36kg	3.8 kg (8.38 lbs)

Battery & Charging

Specification	Harman Kardon Onyx Studio 9	Soundcore Boom 2 Plus
Battery	4722mAh Li-ion, 3.63V, up to 8 hours playtime	—

Connectivity

Specification	Harman Kardon Onyx Studio 9	Soundcore Boom 2 Plus
Bluetooth	Version 5.3, A2DP 1.4, AVRCP 1.6	Bluetooth 5.3
Wi-Fi	N/A — Bluetooth-only portable speaker	N/A — Bluetooth-only portable speaker
Wired Inputs	USB-C (5V	3.5mm AUX-IN
HDMI	N/A — portable speaker design	N/A — portable speaker design
USB	USB-C (5V/2.1A), multi-device pairing, Auracast multi-speaker support	—
Microphone / Guitar Inputs	N/A — no microphone or guitar input	N/A — no microphone or guitar input
Multi-Speaker / Stereo Pairing	Pair with another Onyx Studio 9 via Auracast for a wider, stereo soundstage.	PartyCast 2.0 & TWS

Features

Specification	Harman Kardon Onyx Studio 9	Soundcore Boom 2 Plus
Voice Assistant	N/A — no built-in voice assistant	N/A — no built-in voice assistant
Lightshow	N/A — no party lightshow	Dual LED rings pulse and change colors automatically to the beat of your music, creating a highly energetic visual atmosphere for your backyard barbecue.
Party Features	N/A — not a party-speaker product	N/A — not a party-speaker product
Home Cinema Features	N/A — not a home-cinema speaker	N/A — not a home-cinema speaker
Special Features	Self-tuning, Constant Sound Field technology, Harman Kardon One app, speakerphone, 7-band EQ	—

Audio

Specification	Harman Kardon Onyx Studio 9	Soundcore Boom 2 Plus
Drivers	1 x 120mm woofer, 3 x 20mm tweeters	2x 50W Woofers, 2x 20W Tweeters
Frequency Response	50Hz – 20kHz (-6dB)	40Hz - 20kHz
Total Power Output	50W RMS	140W (with BassUp 2.0)
Signal-to-Noise Ratio	> 80dB	—

Power & Battery

Specification	Harman Kardon Onyx Studio 9	Soundcore Boom 2 Plus
Power Source	Rechargeable battery / USB charging	Rechargeable battery / USB charging
Charging Time	4 hours	3 Hours
Battery Life	—	Up to 20 Hours
Charging Port	—	30W Fast Charging (USB-C)

Design & Controls

Specification	Harman Kardon Onyx Studio 9	Soundcore Boom 2 Plus
Materials	90% recycled aluminum handle, recycled polyester fabric grille, IPX4 splash resistance	—
Placement / Mounting	Free-standing portable placement	Free-standing portable placement
Water & Dust Resistance	—	IPX7 (Waterproof & Floatable)

What's in the Box

Specification	Harman Kardon Onyx Studio 9	Soundcore Boom 2 Plus
Speaker / Soundbar	Onyx Studio 9	Boom 2 Plus
Subwoofer	N/A — no subwoofer supplied	N/A — no subwoofer supplied
Remote Control	N/A — no remote control supplied	N/A — no remote control supplied
Power Cable	USB charging cable	USB charging cable
Audio / HDMI Cable	N/A	N/A
Mounting Accessories	N/A — portable design	N/A — portable design
Other Accessories	N/A	N/A
Documentation	Quick Start Guide and safety documentation	Quick Start Guide and safety documentation

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