Harman Kardon Go + Play 2 vs Demerbox DB2

Last updated: August 15, 2026

Short answer: the Harman Kardon Go + Play 2. It ranks #18 of 73 boombox speakers by sound quality at $350; the Demerbox DB2 ranks #49 and costs $400, so there is not much of a tradeoff to weigh.

What the Harman Kardon Go + Play 2 offers: Warm sound with boosted bass. Watch for: Not as loud as others.

What the Demerbox DB2 offers: 40+ hour battery life even at higher volumes (real-world: ~14 hrs with phone charging mixed in). Watch for: Bass is not as deep as better speakers.

Buy the Harman Kardon Go + Play 2. It ranks higher for sound quality than the Demerbox DB2 and costs less, so there is no real case for the other one.

If battery life is a priority, the Demerbox DB2 is rated for 40 hours versus 8 hours for the Harman Kardon Go + Play 2.

If water resistance matters to you, the Demerbox DB2 at IP67 (brief submersion) holds up far better than the Harman Kardon Go + Play 2 at no water resistance.

Harman Kardon Go + Play 2 vs Demerbox DB2

Specifications Side By Side

Harman Kardon Go + Play 2 Demerbox DB2
Price$350 Discontinued$400
Ranked#18 of 73 in Boombox Size Portable Bluetooth Speakers#49 of 73 in Boombox Size Portable Bluetooth Speakers
Aux Latency0ms-
Bass Extension (-10dB)40Hz-
Battery Life8 hours (Manufacturer specified)40 hours (Manufacturer specified)
IP RatingNoneIP67
Bluetooth Latency33ms-
Max Volume99dB-
Party ModeYes (Wireless Dual Sound)No
Power InputAC Power brickAC Power brick
StereoYesYes
Bluetooth CodecsSBCSBC
AppNoNo
EQNoNo
TWSNoYes
Power BankNoYes (USB-A + USB-C)
USB PlaybackNoNo
Built in MicrophoneYesNo
Output Power100W AC / 30W battery22W RMS
Dimensions20" x 9" x 9.5" (508 x 228.6 x 241.3 mm)10.6" x 9.7" x 6.9" (270 x 246 x 175 mm)
Drivers2x 90mm (3.5") woofers (front and rear firing) + 2x 20mm tweeters2x 3" (76mm) aluminum cone full-range drivers
Weight5.3 lbs / 2.4 kg5.4 lbs / 2.47 kg
DiscontinuedYes-
Digital Aux InputNoNo
Aux Input-Yes
FM Tuner-No

More useful head-to-heads from the same speaker class:

The Two Speakers In Full

Harman Kardon Go + Play 2: $350 Discontinued

Harman Kardon Go + Play 2 ranking card

Pros: Warm sound with boosted bass.

Cons: Not as loud as others. No water rating. Discontinued.

AppNo
Aux Latency0ms
Bass Extension (-10dB)40Hz
Battery Life8 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Latency33ms
Built in MicrophoneYes
Digital Aux InputNo
Dimensions20" x 9" x 9.5" (508 x 228.6 x 241.3 mm)
DiscontinuedYes
Drivers2x 90mm (3.5") woofers (front and rear firing) + 2x 20mm tweeters
EQNo
IP RatingNone
Max Volume99dB
Output Power100W AC / 30W battery
Party ModeYes (Wireless Dual Sound)
Power BankNo
Power InputAC Power brick
StereoYes
TWSNo
USB PlaybackNo
Weight5.3 lbs / 2.4 kg

As an eBay Partner, we may be compensated if you make a purchase.

Demerbox DB2: $400 Amazon

Demerbox DB2 ranking card

Pros: 40+ hour battery life even at higher volumes (real-world: ~14 hrs with phone charging mixed in). Built from a Pelican case - nearly indestructible and waterproof (IP67). Multi-pair up to 6 units. Doubles as power bank and waterproof container.

Cons: Bass is not as deep as better speakers. Very overpriced.

AppNo
Aux InputYes
Battery Life40 hours (Manufacturer specified)
Bluetooth CodecsSBC
Built in MicrophoneNo
Digital Aux InputNo
Dimensions10.6" x 9.7" x 6.9" (270 x 246 x 175 mm)
Drivers2x 3" (76mm) aluminum cone full-range drivers
EQNo
FM TunerNo
IP RatingIP67
Output Power22W RMS
Party ModeNo
Power BankYes (USB-A + USB-C)
Power InputAC Power brick
StereoYes
TWSYes
USB PlaybackNo
Weight5.4 lbs / 2.47 kg

As an eBay Partner, we may be compensated if you make a purchase.