Short answer: the Genelec 8361A for better sound quality, the JBL 306P MKII for the lower price. The Genelec 8361A ranks #5 of 66 powered bookshelf speakers at $10900. The JBL 306P MKII ranks #39 at $398, $10502 cheaper.
What the Genelec 8361A offers: Three-way coaxial design: 5” mid-range with an inset 1” metal dome tweeter, flanked symmetrically above and below by two 10” front-loaded woofers, giving nearly identical vertical response whether you’re sitting or standing. Wide, consistent horizontal radiation of about ±60°, very forgiving for multiple seats or a home-theater row. Distortion at both 86dB and 96dB/1m stays below roughly 1%, and multitone distortion is also under about 1% - among the cleanest speakers reviewed. Long-term compression is practically non-existent, with no woofer bottoming or audible intermodulation even driven to 90dB+ at 10 feet. In-room bass extension reaches down to about 35Hz without a subwoofer. Extensive back-panel tuning (bass rolloff, bass profile, treble profile, and a desk/console compensation switch) for boundary placement. Watch for: Approximately $11,000 per pair; Genelec’s GLM room-correction add-on (measurement mic plus software) is another ~$450 and wasn’t used in this review. Shows an on-axis dip around 200Hz that may be tied to some rear-panel radiation or resonance the reviewer couldn’t fully explain. In far-field listening there’s a mild upper-midrange/lower-treble rise (roughly 2-3kHz) that only smooths out with 5-10° of toe-out or closer near-field placement. Short-term compression testing shows some tweeter limiting, though it didn’t translate to audible issues in real-world listening. At about 70 lbs, awkward to lift onto a stand alone.
What the JBL 306P MKII offers: CEA2034 spinorama shows a nice, smooth on-axis response with very good directivity control for a compact 6.5” monitor. Dual 56W Class D amps keep the design affordable at $398 per pair while following JBL’s well-regarded 300-series voicing. Watch for: A narrow but noticeable dip around 1.6kHz shows up in the on-axis and listening-window curves. Distortion runs classically high for this series, reaching around 5% near 200Hz at 96dB SPL. Amplifier hiss is audible from roughly 2 feet away, and the monitor runs out of headroom at higher volumes.
Buy the Genelec 8361A if sound quality matters more than the price. Buy the JBL 306P MKII if the price matters more than sound quality.
Specifications Side By Side
| Genelec 8361A | JBL 306P MKII | |
|---|---|---|
| Price | $10900 | $398 |
| Ranked | #5 of 66 in Large Size Powered Bookshelf Speakers | #39 of 66 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-10dB) | 29Hz (measured, Erin’s Audio Corner) | 60Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 34Hz (measured, Erin’s Audio Corner) | 78Hz (measured, Audio Science Review) |
| Dimensions | 22.5"H x 14"W x 13.6"D (571.5 x 355.6 x 345.4 mm) | 16.1"H x 11.2"W x 12.9"D (408 x 285 x 328 mm) |
| Inputs | XLR | - |
| Drivers | Dual 263 x 137 mm woofers, 5.1" coaxial with tweeter midrange, 1" (25mm) coaxial tweeter | 6.5" woofer, 1" neodymium tweeter |
| Weight | 70.3 lbs / 31.9 kg each | 13.4 lbs / 6.1 kg each |
| App | Yes (GLM) | No |
| Bluetooth | No | - |
| DSP | Yes | No |
| EQ | Yes (via GLM software) | No |
| Frequency Response | 30Hz - 43kHz (±2dB) (Manufacturer specified) | 39Hz - 24kHz (-10dB) (Manufacturer specified) |
| Max SPL | 118dB @ 1m | - |
| Output Power | 1000w Per Speaker | 112W total |
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- Genelec 8361A vs Kali Audio LP-6 V2
- Adam Audio T8V vs Genelec 8361A
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The Two Speakers In Full
Genelec 8361A: $10900 Bhphotovideo eBay
Pros: Three-way coaxial design: 5” mid-range with an inset 1” metal dome tweeter, flanked symmetrically above and below by two 10” front-loaded woofers, giving nearly identical vertical response whether you’re sitting or standing. Wide, consistent horizontal radiation of about ±60°, very forgiving for multiple seats or a home-theater row. Distortion at both 86dB and 96dB/1m stays below roughly 1%, and multitone distortion is also under about 1% - among the cleanest speakers reviewed. Long-term compression is practically non-existent, with no woofer bottoming or audible intermodulation even driven to 90dB+ at 10 feet. In-room bass extension reaches down to about 35Hz without a subwoofer. Extensive back-panel tuning (bass rolloff, bass profile, treble profile, and a desk/console compensation switch) for boundary placement.
Cons: Approximately $11,000 per pair; Genelec’s GLM room-correction add-on (measurement mic plus software) is another ~$450 and wasn’t used in this review. Shows an on-axis dip around 200Hz that may be tied to some rear-panel radiation or resonance the reviewer couldn’t fully explain. In far-field listening there’s a mild upper-midrange/lower-treble rise (roughly 2-3kHz) that only smooths out with 5-10° of toe-out or closer near-field placement. Short-term compression testing shows some tweeter limiting, though it didn’t translate to audible issues in real-world listening. At about 70 lbs, awkward to lift onto a stand alone.
Full Genelec 8361A review and specifications →
| App | Yes (GLM) |
|---|---|
| Bass Extension (-10dB) | 29Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 34Hz (measured, Erin's Audio Corner) |
| Bluetooth | No |
| DSP | Yes |
| Dimensions | 22.5"H x 14"W x 13.6"D (571.5 x 355.6 x 345.4 mm) |
| Drivers | Dual 263 x 137 mm woofers, 5.1" coaxial with tweeter midrange, 1" (25mm) coaxial tweeter |
| EQ | Yes (via GLM software) |
| Frequency Response | 30Hz - 43kHz (±2dB) (Manufacturer specified) |
| Inputs | XLR |
| Max SPL | 118dB @ 1m |
| Output Power | 1000w Per Speaker |
| Weight | 70.3 lbs / 31.9 kg each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
JBL 306P MKII: $398 Bhphotovideo eBay
Pros: CEA2034 spinorama shows a nice, smooth on-axis response with very good directivity control for a compact 6.5” monitor. Dual 56W Class D amps keep the design affordable at $398 per pair while following JBL’s well-regarded 300-series voicing.
Cons: A narrow but noticeable dip around 1.6kHz shows up in the on-axis and listening-window curves. Distortion runs classically high for this series, reaching around 5% near 200Hz at 96dB SPL. Amplifier hiss is audible from roughly 2 feet away, and the monitor runs out of headroom at higher volumes.
Full JBL 306P MKII review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 60Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 78Hz (measured, Audio Science Review) |
| DSP | No |
| Dimensions | 16.1"H x 11.2"W x 12.9"D (408 x 285 x 328 mm) |
| Drivers | 6.5" woofer, 1" neodymium tweeter |
| EQ | No |
| Frequency Response | 39Hz - 24kHz (-10dB) (Manufacturer specified) |
| Output Power | 112W total |
| Weight | 13.4 lbs / 6.1 kg each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons