Harman Kardon Luna 2 vs Soundcore Motion Boom

Last updated: September 1, 2026

These are not really the same size class, and that is the honest framing here. The Harman Kardon Luna 2 ranks #22 of 138 medium speakers by sound quality at $199.95; the Soundcore Motion Boom ranks #14 of 77 large speakers by sound quality at $109.99.

What the Harman Kardon Luna 2 gets right: Articulate, spacious midrange with precise imaging and instrument separation. Tight, well-controlled bass from the 62mm x 82mm woofer and passive radiator despite the compact body, and it stays cleaner at volume than pricier rivals like the Sonos Play. Set against that: Treble can sound bright and edgy, and it loses more output off-axis than some rivals. Some listeners hear mid-range rattling on certain tracks, similar to sibling JBL models. 12-hour battery life trails category leaders like the JBL Charge 6, which doubles it.

The case for the Soundcore Motion Boom: 30W loud bass-heavy sound, excellent budget-friendly value. 10,000mAh battery for 24 hours claimed (15-18 hours with BassUp engaged at high volume). Waterproof, buoyant design, convenient carry handle. PowerIQ USB port charges devices. The catch: Not as neutral or detailed as other top ranked speakers

Buy the Harman Kardon Luna 2 ($199.95) for a medium speaker; the Soundcore Motion Boom ($109.99) suits a large speaker instead.

There is a real battery-life gap here: the Soundcore Motion Boom is rated for 24 hours, the Harman Kardon Luna 2 only 12 hours.

Buy the Harman Kardon Luna 2 at Amazon ($199.95) →Buy the Soundcore Motion Boom at Amazon ($109.99) →

Harman Kardon Luna 2 vs Soundcore Motion Boom

Specifications Side By Side

Harman Kardon Luna 2 Soundcore Motion Boom
Price$199.95$109.99
Ranked#22 of 138 in Medium Size Portable Bluetooth Speakers#14 of 77 in Large Size Portable Bluetooth Speakers
AppYesYes
Aux InputNoNo
Battery Life12 hours (Manufacturer specified)24 hours (Manufacturer specified)
Bluetooth CodecsSBCSBC
EQYes (4 presets + custom)Yes
IP RatingIP67IPX7
MicroSD PlaybackNo-
Power InputUSB-CUSB-C
StereoNoYes
OmnidirectionalNoNo
TWSYesYes
USB PlaybackNo-
Weight1.6 lbs / 735 g3.3 lbs / 1.5 kg
Bluetooth Version5.45.0
Dimensions8.5" x 3.3" x 3.2" (216 x 84 x 81 mm)13.6" x 7.9" x 5.8" (346 x 200 x 148 mm)
Drivers62mm x 82mm woofer with passive radiator, 20mm tweeter2x 63.5mm titanium fullrange drivers + 2x passive radiators
Frequency Response58Hz - 20kHz (-6dB) (Manufacturer specified)-
Output Power40W (25W woofer + 15W tweeter)30W
Digital Aux InputNoNo
Bass Extension (-10dB)-53Hz
Bluetooth Latency-170ms
Max Volume-106dB
Party Mode-No
Power Bank-Yes (USB-A)
Built in Microphone-Yes
Buy the Harman Kardon Luna 2 at Amazon ($199.95) →Buy the Soundcore Motion Boom at Amazon ($109.99) →

Other pairings from the same speaker class worth checking:

Prices on this page were last checked September 1, 2026 at 2:15 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 Luna 2: $199.95 Amazon B&H Photo Video eBay

Harman Kardon Luna 2 ranking card

Pros: Articulate, spacious midrange with precise imaging and instrument separation. Tight, well-controlled bass from the 62mm x 82mm woofer and passive radiator despite the compact body, and it stays cleaner at volume than pricier rivals like the Sonos Play. IP67 rated, and two units pair via AirTouch for true stereo sound.

Cons: Treble can sound bright and edgy, and it loses more output off-axis than some rivals. Some listeners hear mid-range rattling on certain tracks, similar to sibling JBL models. 12-hour battery life trails category leaders like the JBL Charge 6, which doubles it. Single unit is not stereo (1.1 driver layout).

Full Harman Kardon Luna 2 review and specifications →

AppYes
Aux InputNo
Battery Life12 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Version5.4
Digital Aux InputNo
Dimensions8.5" x 3.3" x 3.2" (216 x 84 x 81 mm)
Drivers62mm x 82mm woofer with passive radiator, 20mm tweeter
EQYes (4 presets + custom)
Frequency Response58Hz - 20kHz (-6dB) (Manufacturer specified)
IP RatingIP67
MicroSD PlaybackNo
OmnidirectionalNo
Output Power40W (25W woofer + 15W tweeter)
Power InputUSB-C
StereoNo
TWSYes
USB PlaybackNo
Weight1.6 lbs / 735 g
Check current price at Amazon ($199.95) →Check current price at B&H Photo Video →Search eBay for Harman Kardon Luna 2 →

Soundcore Motion Boom: $109.99 Amazon eBay

Soundcore Motion Boom ranking card

Pros: 30W loud bass-heavy sound, excellent budget-friendly value. 10,000mAh battery for 24 hours claimed (15-18 hours with BassUp engaged at high volume). Waterproof, buoyant design, convenient carry handle. PowerIQ USB port charges devices. BassUp feature works well with clear mids/highs.

Cons: Not as neutral or detailed as other top ranked speakers

Full Soundcore Motion Boom review and specifications →

AppYes
Aux InputNo
Bass Extension (-10dB)53Hz
Battery Life24 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Latency170ms
Bluetooth Version5.0
Built in MicrophoneYes
Digital Aux InputNo
Dimensions13.6" x 7.9" x 5.8" (346 x 200 x 148 mm)
Drivers2x 63.5mm titanium fullrange drivers + 2x passive radiators
EQYes
IP RatingIPX7
Max Volume106dB
OmnidirectionalNo
Output Power30W
Party ModeNo
Power BankYes (USB-A)
Power InputUSB-C
StereoYes
TWSYes
Weight3.3 lbs / 1.5 kg
Check current price at Amazon ($109.99) →Search eBay for Soundcore Motion Boom →