Short answer: the GR-Research LGK 2.0, though neither ranks well in its class. It ranks #117 of 168 bookshelf speakers by sound quality, rated 2.8/5, at $290. The JBL Stage 2 240B ranks #118, rated 2.7/5, at $259.95, $30.05 cheaper, a saving that is not big enough to make up the sound-quality gap. Both are rated below 3.0/5 among the 168 bookshelf speakers, so if sound quality matters, consider the Neumi BS5 instead, ranked #38 at $139.99.
What the GR-Research LGK 2.0 does well: A small kit speaker from GR Research built around a single 3” wide-band driver, sold as a kit or flat-pack for desktops and near-field listening. The tradeoff: Sensitivity is low at 84dB.
Why pick the JBL Stage 2 240B: Two-way bookshelf with a 1” anodized aluminum dome tweeter in JBL’s HDI waveguide and a 4.5” polycellulose woofer crossed over at 1.4kHz. The tradeoff: No independent measurements yet, so its tonal balance and directivity can’t be compared with ranked speakers.
Buy the GR-Research LGK 2.0. It is rated higher for sound quality, and the $30.05 saving on the JBL Stage 2 240B is not enough to make up the difference.
About the ratings: the JBL Stage 2 240B’s rating is estimated from measured siblings and predecessors rather than its own measurements, with a likely range of 2.5 to 2.9, so this verdict could change once it is measured.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| GR-Research LGK 2.0 | JBL Stage 2 240B | |
|---|---|---|
| Price | $290 per pair kit | $259.95 per pair |
| Ranked | #117 of 168 in Medium Size Bookshelf Speakers | #118 of 168 in Medium Size Bookshelf Speakers Estimated |
| Weight | 7.9 lbs (3.6 kg) | 10.1 lbs (4.6 kg) each |
| Drivers | 3” wide-band driver | 1” (25mm) anodized aluminum dome tweeter, 4.5” (114mm) polycellulose woofer |
| Sensitivity | 84dB (manufacturer specified) | 85dB (2.83V/1m, manufacturer specified) |
| Frequency Response | 80Hz-20kHz (manufacturer specified) | 53Hz - 25kHz ±6dB (Manufacturer specified) |
| Bass Extension (-3dB) | 79.1Hz (measured, Audio Science Review) | - |
| Bass Extension (-10dB) | about 63.0Hz (measured, Audio Science Review) | - |
| Spinorama Preference Score | 3.31 | - |
| Spinorama Preference Score with Perfect Sub | 6.23 | - |
| DIY Kit | Yes | - |
| Impedance | - | 6 ohms |
| Crossover Frequency | - | 1.4kHz |
| Woofer Cabinet | - | ported, rear |
| Dimensions | - | 10.7”H x 6.9”W x 8.5”D (272 x 175 x 217 mm) |
Related Speaker Comparisons
More top alternatives to GR-Research LGK 2.0:
- GR-Research LGK 2.0 vs MartinLogan Motion 4i
- GR-Research LGK 2.0 vs Triangle Borea BR02
- JBL Stage 2 240B vs Jamo S7-15B
- JBL Stage 2 240B vs Triangle Borea BR02
- JBL Stage 2 240B vs JBL Stage A120
Prices on this page were last checked October 11, 2026 at 4:59 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
GR-Research LGK 2.0: $290 per pair kit GR Research eBay
Pros: A small kit speaker from GR Research built around a single 3” wide-band driver, sold as a kit or flat-pack for desktops and near-field listening. Audio Science Review measured a preference score of 3.31 that reaches 6.23 with an ideal subwoofer, with 0.52 listening window deviation. Measured bass extension of 79.1Hz (-3dB).
Cons: Sensitivity is low at 84dB. Audio Science Review found an uneven response (1.17 average on-axis deviation). It is a kit to build yourself. Bass reaches 79.1Hz (-3dB) and about 63Hz (-10dB).
Full GR-Research LGK 2.0 review and specifications →
| Released | Feb 2022 (4 years ago) |
|---|---|
| Bass Extension (-10dB) | about 63.0Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 79.1Hz (measured, Audio Science Review) |
| DIY Kit | Yes |
| Drivers | 3” wide-band driver |
| Frequency Response | 80Hz-20kHz (manufacturer specified) |
| Sensitivity | 84dB (manufacturer specified) |
| Spinorama Preference Score | 3.31 |
| Spinorama Preference Score with Perfect Sub | 6.23 |
| Weight | 7.9 lbs (3.6 kg) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
JBL Stage 2 240B: $259.95 per pair Estimated Amazon eBay
Older model: the JBL Stage A120 (ranked lower, rated 2.5/5). See every JBL Arena and Stage generation.
Same family: the JBL Stage 250B (larger bookshelf, ranked higher, rated 3.2/5), the JBL Stage 2 260F (smaller floorstanding, estimated 4.2/5), the JBL Stage 2 280F (larger floorstanding, rated 3.4/5), the JBL Stage 2 245C (center, estimated 3.2/5), the JBL Stage 200P (smaller subwoofer, estimated 3.5/5) and the JBL Stage 220P (larger subwoofer, estimated 3.7/5).
Pros: Two-way bookshelf with a 1” anodized aluminum dome tweeter in JBL’s HDI waveguide and a 4.5” polycellulose woofer crossed over at 1.4kHz. JBL rates it at 53Hz to 25kHz (±6dB) and 85dB sensitivity with a 6 ohm load. Espresso, latte and black ash finishes.
Cons: No independent measurements yet, so its tonal balance and directivity can’t be compared with ranked speakers. Rated bass stops at 53Hz (±6dB), so plan on a subwoofer for full-range listening.
Full JBL Stage 2 240B review and specifications →
| Released | 2024 (2 years ago) |
|---|---|
| Crossover Frequency | 1.4kHz |
| Dimensions | 10.7”H x 6.9”W x 8.5”D (272 x 175 x 217 mm) |
| Drivers | 1” (25mm) anodized aluminum dome tweeter, 4.5” (114mm) polycellulose woofer |
| Frequency Response | 53Hz - 25kHz ±6dB (Manufacturer specified) |
| Impedance | 6 ohms |
| Sensitivity | 85dB (2.83V/1m, manufacturer specified) |
| Weight | 10.1 lbs (4.6 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons