Short answer: the Genelec 8341A for measured accuracy; the JBL 306P MKII for value. The Genelec’s spinorama is within about +1.8dB/-2.2dB of the target curve with excellent directivity from its coaxial midrange/tweeter and dual 6.5-inch woofers, though its bass amplifier runs out of headroom first. The JBL is smooth and well controlled for a 6.5-inch monitor, with a dip around 1.6kHz.
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. Watch for: A narrow but noticeable dip around 1.6kHz shows up in the on-axis and listening-window curves.
Buy the JBL 306P MKII if the price matters more than sound quality. Buy the Genelec 8341A if sound quality matters more than the price.
Looking for alternatives? See the complete Powered Home rankings.
Specifications Side By Side
| JBL 306P MKII | Genelec 8341A | |
|---|---|---|
| Price | $398 per pair | $6590 per pair |
| Ranked | #41 of 68 in Large Size Powered Bookshelf Speakers | #7 of 68 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 46.9Hz (measured, Audio Science Review) | 47.6Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 38.6Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) | 36.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Dimensions | 16.1”H x 11.2”W x 12.9”D (408 x 285 x 328 mm) | 13.8” x 9.3” x 9.6” (351 x 237 x 243 mm) (H x W x D) |
| Frequency Response | 39Hz - 24kHz (-10dB) (Manufacturer specified) | 338Hz - 37kHz (-6dB) (Manufacturer specified) |
| Weight | 13.4 lbs (6.1 kg) each | 21.6 lbs (9.8 kg) |
| Drivers | 6.5” woofer, 1” neodymium tweeter | 2x 6.5” woofers, 3.5” midrange, 0.75” tweeter (coaxial mid/tweeter) |
| App | No | No |
| EQ | No | Yes (Room adjustment) |
| DSP | No | No |
| Amplifier Power | 112W total | 550W total (250W bass, 150W mid, 150W treble) |
| Spinorama Preference Score | 5.06 | 6.75 |
| Spinorama Preference Score with Perfect Sub | 6.94 | 8.52 |
| Inputs | XLR, 1/4” TRS | XLR, AES/EBU |
| XLR Input | Yes | Yes |
| RCA Input | No | No |
| TRS Input | Yes | No |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | Yes |
| Aux Input | No | No |
| Bluetooth | No | No |
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Prices on this page were last checked October 2, 2026 at 10:18 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 306P MKII: $398 per pair B&H Photo Video eBay
Pros: A 6.94 ideal-subwoofer score and 46.9Hz measured -3dB extension make this a useful affordable nearfield monitor. The waveguide supports broad horizontal listening coverage, and basic boundary controls help with setup. Measured bass extension of 46.9Hz (-3dB).
Cons: The 3.4dB response span from 300Hz to 5kHz is less even than the 308P MKII’s, with midrange resonances affecting neutrality. Hiss can matter at a quiet desk, while bass distortion limits demanding playback. A subwoofer improves bandwidth but does not remove the midrange irregularities. A narrow dip around 1.6kHz shows in the on-axis and listening-window curves.
Full JBL 306P MKII review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 112W total |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 38.6Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 46.9Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| 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) |
| HDMI Input | No |
| Inputs | XLR, 1/4” TRS |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 5.06 |
| Spinorama Preference Score with Perfect Sub | 6.94 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 13.4 lbs (6.1 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Genelec 8341A: $6590 per pair B&H Photo Video eBay
Pros: An 8.52 ideal-subwoofer preference score and 1.2dB response span from 300Hz to 5kHz place the measured vertical configuration among the strongest tonal performers here. Coaxial radiation and GLM support precise nearfield imaging and room integration. Measured bass extension of 47.6Hz (-3dB).
Cons: Measured -3dB extension is 47.6Hz, so the larger 8351B and 8361A provide more useful low-end reach and headroom. The review found bass-output limitations at demanding levels. Its excellent ideal-subwoofer score should not be read as equivalent full-range output to those larger models.
Full Genelec 8341A review and specifications →
| AES Input | Yes |
|---|---|
| Amplifier Power | 550W total (250W bass, 150W mid, 150W treble) |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 36.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 47.6Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| DSP | No |
| Dimensions | 13.8” x 9.3” x 9.6” (351 x 237 x 243 mm) (H x W x D) |
| Drivers | 2x 6.5” woofers, 3.5” midrange, 0.75” tweeter (coaxial mid/tweeter) |
| EQ | Yes (Room adjustment) |
| Frequency Response | 338Hz - 37kHz (-6dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR, AES/EBU |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 6.75 |
| Spinorama Preference Score with Perfect Sub | 8.52 |
| TRS Input | No |
| USB Input | No |
| Weight | 21.6 lbs (9.8 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Genelec 8341A vs Aalto Speakers Aalto 3 Active Pro
- Genelec 8341A vs Adam Audio S2V
- Genelec 8341A vs Neumann KH 310 A
- Genelec 8341A vs JBL 308P MKII
- Genelec 8341A vs Yamaha HS8
- Genelec 8341A vs Kali Audio LP-6 V2
- Genelec 8341A vs Kali Audio IN-8 V2
- Genelec 8341A vs Genelec 8050B
- See all 23 comparisons