Choose the speaker type
Decide whether you need portable, powered stereo or passive speakers.
Expert reviews. One COR Score.
JBL Quantum Duo BLACK reviews
Brand: JBL More JBL speakers reviews →
tbd
Compare JBL Quantum Duo BLACK reviews, specifications and available UK retailer offers. Check the details for this exact model and follow the original critics’ findings.
Manufacturer codeJBLQUANTUMDUOBLKEU
The product, explained
About the JBL Quantum Duo BLACK
JBL JBLQUANTUMDUOBLKEU is listed in the loudspeakers category. The recorded specifications include bluetooth: Yes; rms rated power: 20 W. This entry covers manufacturer code JBLQUANTUMDUOBLKEU. Specifications relate to this exact source record; other editions or packages may differ.
For JBL Quantum Duo BLACK, the recorded details include rms rated power: 20 W; bluetooth: Yes; weight: 2.8 kg. Use these facts to narrow a shortlist, then compare the reviewers’ findings on the features that matter for your use.
- Rated audio power (RMS)
- 20 W
- Bluetooth
- Yes
- Weight
- 2.8 kg
Make it work for you
Before choosing the JBL Quantum Duo BLACK
List required source inputs
List required inputs for phone, TV, turntable and computer.
Measure placement and listening space
Measure shelf, stand and listening positions before choosing size.
Check outdoor protection limits
Check the full protection-rating conditions for outdoor use.
Independent perspectives
Expert reviews 0
Independent ratings, converted to the same five-point scale. Each card links to the original review and identifies the available evidence.
No scored critic reviews have been imported for this exact product yet. It remains unrated.
Independent reviews, made comparable
What does the COR Score mean?
One consistent scale makes different publishers’ ratings easier to compare. The original review still tells you why a critic reached that verdict.
Read our scoring methodology →Scale conversion · example
8/ 104.00/ 5
An illustration of conversion, not this product’s rating.
Check the match
Identify the exact model and the version reviewed. Check the manufacturer code, configuration and supplied accessories.
Compare on one scale
Convert usable ratings to five points, count each publisher once and give each critic equal weight.
Require three critics
Show the average to two decimal places after three distinct critics. Otherwise display tbd, keeping individual reviews visible.
Find the best fit by considering the score alongside the critic count, review dates, tested version and the strengths that matter to you. Eligible model-level reviews identify the tested configuration. Reviews of different hardware are shown separately and do not enter this product’s COR Score.
Know exactly what you’re buying
JBL Quantum Duo BLACK specifications
Manufacturer code: JBLQUANTUMDUOBLKEU · Icecat product 77473262 · Checked 25 Sep 2026. Specifications belong to this exact model.
Key specifications
The main features to compare for this exact model. Missing details are not assumed.
| Rated audio power (RMS) | 20 W |
|---|---|
| Bluetooth | Yes |
| Weight | 2.8 kg |
More product specifications
Open a section for the details that matter to you.
Audio & listening2 details
| Frequency range | 60 - 20000 Hz |
|---|---|
| Signal-to-Noise Ratio (SNR) | 80 dB |
Connections & wireless1 detail
| AirPlay | No |
|---|
Power & battery2 details
| Amplifier output power | 20 W |
|---|---|
| Power source type | AC |
Controls & features1 detail
| Export Control Classification Number (ECCN) | China |
|---|
Design & dimensions5 details
| Product colour | Black |
|---|---|
| Housing material | Plastic |
| Width | 89 mm |
| Depth | 176 mm |
| Height | 210 mm |
Further product details9 details
| Number of tweeter drivers | 1 |
|---|---|
| Tweeter diameter (imperial) | 1.91 cm (0.75") |
| Number of woofer drivers | 1 |
| Woofer diameter (imperial) | 6.35 cm (2.5") |
| Peak Music Power Output (PMPO) | 20 W |
| Recommended usage | PC |
| LED indicators | Yes |
| Cord length | 1.2 m |
| Layers per pallet | 6 pc(s) |
Packaging & supplied accessories18 details
| Package width | 224 mm |
|---|---|
| Package depth | 225 mm |
| Package height | 316 mm |
| Package weight | 3.78 kg |
| Remote control included | No |
| Pallet GTIN (EAN/UPC) | 6925281964985 |
| Pallet net weight | 256.7 kg |
| Products per pallet layer | 10 pc(s) |
| Pallet gross length | 120 cm |
| Products per pallet | 60 pc(s) |
| Master (outer) case width | 333 mm |
| Master (outer) case length | 469 mm |
| Master (outer) case height | 263 mm |
| Master (outer) case gross weight | 8.56 kg |
| Master (outer) case GTIN (EAN/UPC) | 6925281964985 |
| Master (outer) case volume | 0.041 cm³ |
| Master (outer) cases per pallet | 30 pc(s) |
| Country of origin | China |
Specifications describe the supplied product data, not measured review results. Battery life, range and performance figures are source claims and can vary with use.
Build your shortlist
Compare other speakers
More products in this category. Compare their exact features, original reviews and available offers alongside the JBL Quantum Duo BLACK.
| Product | Brand | Shown model | COR Score |
|---|---|---|---|
| JBL Arena 120 reviews → | JBL | ARENA120WHBlack, White | tbd0 critic reviews · Available after 3 |
| JBL Arena 170 reviews → | JBL | ARENA170WHBlack, White | tbd0 critic reviews · Available after 3 |
| JBL Arena 180 reviews → | JBL | ARENA180WHBlack, White | tbd0 critic reviews · Available after 3 |
| JBL Clip 2 reviews → | JBL | JBLCLIP2BLKAMBlack, Orange | tbd0 critic reviews · Available after 3 |
Your questions, answered
JBL Quantum Duo BLACK FAQs
How many expert reviews are available for JBL Quantum Duo BLACK?
No scored critic reviews have been imported for this product yet. This means review coverage is missing; it does not mean the product received a poor review.
What is the COR Score for JBL Quantum Duo BLACK?
The COR Score is tbd. We publish a combined score only after at least three distinct critics have usable ratings. Any individual reviews already available remain visible.
Which exact version does this page cover?
This page identifies JBL Quantum Duo BLACK using manufacturer code JBLQUANTUMDUOBLKEU. Check that code, configuration and supplied accessories against the retailer listing. Related-version reviews are labelled separately and do not contribute to this version’s score.
What is the listed rms rated power for JBL Quantum Duo BLACK?
The source specification records rms rated power as 20 W. This is a specification, not an independent performance measurement. Check the exact model and the original critic reviews for real-world results.
What is the listed bluetooth for JBL Quantum Duo BLACK?
The source specification records bluetooth as Yes. This is a specification, not an independent performance measurement. Check the exact model and the original critic reviews for real-world results.
Where can I compare prices for JBL Quantum Duo BLACK?
Use the retailer-offer section on this page for available matched offers. If no offer is shown, we do not currently have a verified price. Confirm model, stock, delivery and the final total at the retailer; coverage does not include every seller.
Can one Bluetooth speaker make stereo?
Some can pair with a matching unit, but compatibility is model-specific. Check whether the mode is supported and how it behaves after updates.
Does a high watt figure mean it will be louder?
Not reliably. Measurement conditions, speaker efficiency and distortion limits vary, so use reviews and a listening test where possible.
Can I put a speaker in a cupboard?
Only if the maker permits it and airflow is adequate. Enclosures can alter sound and trap heat around powered equipment.
How should I use the specifications alongside reviews?
Use the recorded features to check compatibility and make a shortlist. Read the original reviews for measured performance, everyday use and the tested configuration.
Understand your options
Speaker buying guides
Explore one topic in depth before making your shortlist.
Start with the complete buying guide →Active vs passive speakers: building the right systemActive speakers include amplification; passive speakers require an external amplifier. The choice shapes the whole system, including volume control, source switching, cable runs and what can be upgraded later.Bookshelf vs floorstanding speakersChoose between standmount and floorstanding speakers from room placement, listening distance and total installed system.Speaker placement: distance from walls and listening positionUse placement to balance bass, stereo image and practical movement before relying on electronic correction.Bluetooth vs Wi-Fi speakersChoose the transport around portability, range, multiroom use, source independence and network support.