Short answer: the Genelec 8341A for measured accuracy; the JBL 308P MKII for value. The Genelec 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 the bass amplifier runs out of headroom before the mid and treble. The JBL is essentially flat from 45Hz to above 15kHz with a resonance around 18kHz.
What the JBL 308P MKII offers: CEA2034 spinorama shows an essentially flat on-axis response from 45Hz to above 15kHz, with almost no directivity error. Watch for: A resonance shows up around 18kHz and a slight dip around 1.4kHz.
Buy the JBL 308P MKII when the price outweighs sound quality for you, and the Genelec 8341A when sound quality outweighs the price instead.
Looking for alternatives? See the complete Powered Home rankings.
Specifications Side By Side
| JBL 308P MKII | Genelec 8341A | |
|---|---|---|
| Price | $298 per pair | $6590 per pair |
| Ranked | #22 of 68 in Large Size Powered Bookshelf Speakers | #7 of 68 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 42.5Hz (measured, Audio Science Review) | 47.6Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 37.6Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) | 36.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Dimensions | 16.5”H x 10”W x 12.1”D (419.1 x 254 x 307.3 mm) | 13.8” x 9.3” x 9.6” (351 x 237 x 243 mm) (H x W x D) |
| Frequency Response | 45Hz - 20kHz (+/-3dB) (Manufacturer specified) | 338Hz - 37kHz (-6dB) (Manufacturer specified) |
| Drivers | 8” 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 | 5.88 | 6.75 |
| Spinorama Preference Score with Perfect Sub | 7.69 | 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 |
| Weight | 17.9 lbs (8.1 kg) each | 21.6 lbs (9.8 kg) |
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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 308P MKII: $298 per pair Amazon B&H Photo Video eBay
Pros: A 1.8dB response span from 300Hz to 5kHz and 7.69 ideal-subwoofer score support unusually good tonal balance for an accessible studio monitor. Measured -3dB extension of 42.5Hz supplies useful musical bass, and the waveguide helps maintain consistent horizontal coverage. Measured bass extension of 42.5Hz (-3dB).
Cons: Amplifier hiss may be noticeable in quiet, close-range use. Bass distortion and output limits matter when playing loudly, despite the 8-inch woofer. Keep the tweeter near ear height; vertical crossover behavior is less forgiving than the best coaxial designs. A resonance around 18kHz and a slight dip around 1.4kHz.
Full JBL 308P MKII review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 112W total |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 37.6Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 42.5Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| DSP | No |
| Dimensions | 16.5”H x 10”W x 12.1”D (419.1 x 254 x 307.3 mm) |
| Drivers | 8” woofer, 1” neodymium tweeter |
| EQ | No |
| Frequency Response | 45Hz - 20kHz (+/-3dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR, 1/4” TRS |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 5.88 |
| Spinorama Preference Score with Perfect Sub | 7.69 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 17.9 lbs (8.1 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