Short answer: the Genelec S360 for main-monitor output and calibration; the JBL 4305P for compact nearfield use. The S360 is a 10 inch two way capable of peak SPL over 128dB with GLM calibration, but its bass alignment Q of 1.16 is the highest in this batch and may bump near port tuning. The 4305P reaches a 45Hz F3 but its limiter is conspicuous around 96dB.
The case for the JBL 4305P: Erin measured a 45Hz F3 and heard solid 40–50Hz in-room extension (excellent for a compact 5.25-inch active monitor). Set against that: The limiter becomes conspicuous around 96dB: Erin measured about 8dB lost near 50Hz at the highest drive and achieved roughly 93dB unweighted at 2m in-room, so this is a near/midfield system rather than a high-output theater speaker.
Buy the JBL 4305P if the price is the priority over sound quality, or the Genelec S360 if sound quality is the priority over the price.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| JBL 4305P | Genelec S360 | |
|---|---|---|
| Price | $1,499.99 per pair | $9,550 per pair |
| Ranked | #32 of 79 in Large Size Powered Bookshelf Speakers | #23 of 79 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 45Hz (measured, Erin’s Audio Corner) | 39.6Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 40.5Hz (measured, Erin’s Audio Corner) | 35.6Hz (measured, Audio Science Review) |
| Maximum SPL | ~93dB at 2m in-room before limiting (measured, Erin’s Audio Corner) | Peak 128dB (manufacturer specified) |
| Amplifier Power | 300W system: 125W LF + 25W HF per speaker | 350W total (250W woofer, 100W tweeter, Class D) |
| Drivers | 5.25-inch pulp woofer; 1-inch annular compression driver | 1” titanium compression tweeter, 10” cone woofer |
| Dimensions | 13.2H x 8.3W x 8.8D inches | 20.9”H x 14.2”W x 14.2”D (530 x 360 x 360 mm) |
| Spinorama Preference Score | 5.44 | 5.96 |
| Spinorama Preference Score with Perfect Sub | 7.45 | 7.70 |
| Inputs | XLR/TRS combo, 3.5mm Aux, Optical, USB-B, Ethernet | XLR (analog), XLR AES/EBU (digital) |
| XLR Input | Yes | Yes |
| RCA Input | No | No |
| TRS Input | Yes | No |
| Optical Input | Yes | No |
| Coaxial Input | No | No |
| USB Input | Yes | No |
| HDMI Input | No | No |
| AES Input | No | Yes |
| Aux Input | Yes | No |
| Weight | Primary 14.6 lbs (6.6 kg), Secondary 14.1 lbs (6.4 kg) | 66.1 lbs (30 kg) each |
| Bluetooth | Yes, 5.1 | No |
| Frequency Response | 45Hz - 25kHz (-6dB) (Manufacturer specified) | 36Hz-22kHz -6dB |
| Enclosure | - | ported |
| Warranty | - | 2 years (5 with product registration) |
| Country | - | Finland |
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Prices on this page were last checked October 4, 2026 at 9:58 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
JBL 4305P: $1,499.99 per pair Amazon JBL eBay
Pros: The measured 1.5dB response span from 300Hz to 5kHz supports even mids, with a 7.45 ideal-subwoofer score and 45.4Hz -3dB bass extension. Integrated consumer connectivity makes this a more convenient living-room system than many studio monitors. Measured bass extension of 45Hz (-3dB).
Cons: Crossover-region directivity changes mean the narrow on-axis span does not describe every listening angle. Limiting becomes relevant at high output, particularly with bass-heavy music. It suits near- to midfield listening better than the largest high-output systems here. Erin measured about 8dB lost near 50Hz at the highest drive level and reached roughly 93dB unweighted at 2m in-room.
Full JBL 4305P review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 300W system: 125W LF + 25W HF per speaker |
| Aux Input | Yes |
| Bass Extension (-10dB) | 40.5Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 45Hz (measured, Erin’s Audio Corner) |
| Bluetooth | Yes, 5.1 |
| Coaxial Input | No |
| Dimensions | 13.2H x 8.3W x 8.8D inches |
| Drivers | 5.25-inch pulp woofer; 1-inch annular compression driver |
| Frequency Response | 45Hz - 25kHz (-6dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR/TRS combo, 3.5mm Aux, Optical, USB-B, Ethernet |
| Maximum SPL | ~93dB at 2m in-room before limiting (measured, Erin’s Audio Corner) |
| Optical Input | Yes |
| RCA Input | No |
| Spinorama Preference Score | 5.44 |
| Spinorama Preference Score with Perfect Sub | 7.45 |
| TRS Input | Yes |
| USB Input | Yes |
| Weight | Primary 14.6 lbs (6.6 kg), Secondary 14.1 lbs (6.4 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Genelec S360: $9,550 per pair B&H Photo Video eBay
Pros: A strong choice when professional output capability and listening distance matter. The measured 2.0dB response span from 300Hz to 5kHz, 39.6Hz -3dB extension and 7.70 ideal-subwoofer score support balanced sound, while GLM provides room-integration tools. It is capable of peak output over 128dB. Measured bass extension of 39.6Hz (-3dB).
Cons: The substantial enclosure and installation requirements make it excessive for many desks. Its tonal measurements do not surpass the best smaller monitors simply because it can play louder. Deep-bass reproduction still benefits from a subwoofer, especially in high-output systems. The fitted bass-alignment Q of 1.16 suggests a mild bump near the port tuning rather than a clean rolloff.
Full Genelec S360 review and specifications →
| AES Input | Yes |
|---|---|
| Amplifier Power | 350W total (250W woofer, 100W tweeter, Class D) |
| Aux Input | No |
| Bass Extension (-10dB) | 35.6Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 39.6Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| Country | Finland |
| Dimensions | 20.9”H x 14.2”W x 14.2”D (530 x 360 x 360 mm) |
| Drivers | 1” titanium compression tweeter, 10” cone woofer |
| Enclosure | ported |
| Frequency Response | 36Hz-22kHz -6dB |
| HDMI Input | No |
| Inputs | XLR (analog), XLR AES/EBU (digital) |
| Maximum SPL | Peak 128dB (manufacturer specified) |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 5.96 |
| Spinorama Preference Score with Perfect Sub | 7.70 |
| TRS Input | No |
| USB Input | No |
| Warranty | 2 years (5 with product registration) |
| Weight | 66.1 lbs (30 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Genelec S360 vs JBL 308P MKII
- Genelec S360 vs Yamaha HS8
- Genelec S360 vs Neumann KH 310 A
- Genelec S360 vs Kali Audio LP-6 V2
- Genelec S360 vs Kali Audio IN-8 V2
- Genelec S360 vs LOGProfessional Alpha
- Genelec S360 vs Devialet Phantom Ultimate 108dB
- Genelec S360 vs Focal Solo6 ST6
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