Short answer: the Genelec 8330A for better sound quality, the KRK Classic 5 for the lower price. The Genelec 8330A ranks #5 of 60 powered bookshelf speakers at $2250. The KRK Classic 5 ranks #30 at $280, $1970 cheaper.
What the KRK Classic 5 offers: High-quality Klippel NFS data produces a 5.22 Spinorama preference score with a subwoofer, essentially level with the Edifier MR4. Bass reaches 60.1Hz at -3dB and 54.2Hz at -6dB, and the speaker responds especially well to EQ: Spinorama’s corrected score rises from 2.71 to 5.34 without a subwoofer and from 5.22 to 7.71 with one. Watch for: The unequalized response has a large 6.5dB frequency-deviation band, elevated splashy treble above 4kHz, crossover directivity error, and sharply narrowing tweeter dispersion. Distortion becomes extreme below 50Hz. Its raw 2.71 preference score is weak without a subwoofer, so EQ and careful toe-in are strongly recommended.
What the Genelec 8330A offers: Sits between the compact 8320A and the larger 8331A in Genelec’s SAM lineup, with a die cast aluminum Minimum Diffraction Enclosure and Directivity Control Waveguide that deliver a measured 55.7Hz extension point, well beyond the 8320A’s smaller cabinet. The bass alignment is well damped at a measured Q of 0.379, so the low end rolls off cleanly rather than peaking near the tuning frequency. Watch for: On axis deviation measures 0.324dB average, rougher than several similarly priced monitors in this catalog, and listening window smoothness sits at a moderate 0.38. GLM room calibration requires the separate 9320A SAM Reference Controller or GLM Calibration Kit, an extra cost on top of the speaker price. At $1,125 each it costs roughly double the smaller 8320A for a moderate step up in bass extension and output.
Buy the KRK Classic 5 if the price matters more than sound quality. Buy the Genelec 8330A if sound quality matters more than the price.
Specifications Side By Side
| KRK Classic 5 | Genelec 8330A | |
|---|---|---|
| Price | $280 | $2,250/pair |
| Ranked | #30 of 60 in Medium Size Powered Bookshelf Speakers | #5 of 60 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 60.1Hz (Spinorama/Audio Science Review) | 55.7Hz (measured, Audio Science Review) |
| Bass Extension (-6dB) | 54.2Hz (Spinorama/Audio Science Review) | - |
| Spinorama Preference Score | 2.71 without subwoofer; 5.22 with subwoofer | - |
| Dimensions | 9.7"H x 7.4"W x 11.2"D (246.4 x 188 x 284.5 mm) | 11.8"H x 7.4"W x 7"D (299 x 189 x 178 mm) (11.8 x 7.4 x 7.0 in) |
| Frequency Response | 56Hz-30KHz (+-3dB) (Manufacturer specified) | 45Hz-23kHz -6dB |
| Inputs | RCA, TRS, XLR | - |
| Weight | 12.9 lbs / 5.87 kg | 11.2 lbs / 5.1 kg (11.2 lbs) each |
| Drivers | 5" (127mm) woofer | 0.75" metal dome tweeter, 5.1" cone woofer |
| App | No | - |
| Bluetooth | No | - |
| EQ | Yes (Room adjustment) | - |
| Output Power | 50w RMS Per Speaker | - |
| Enclosure | - | ported |
| Power Output (Watts) | - | 100W total (50W woofer, 50W tweeter, Class D) |
| Bass Extension (-10dB) | - | 44.9Hz (measured, Audio Science Review) |
| Max SPL | - | 104dB |
| Warranty | - | 2 years (5 with product registration) |
| Country | - | Finland |
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Prices on this page were last checked August 24, 2026 at 6:53 AM 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
KRK Classic 5: $280 Amazon eBay
Pros: High-quality Klippel NFS data produces a 5.22 Spinorama preference score with a subwoofer, essentially level with the Edifier MR4. Bass reaches 60.1Hz at -3dB and 54.2Hz at -6dB, and the speaker responds especially well to EQ: Spinorama’s corrected score rises from 2.71 to 5.34 without a subwoofer and from 5.22 to 7.71 with one.
Cons: The unequalized response has a large 6.5dB frequency-deviation band, elevated splashy treble above 4kHz, crossover directivity error, and sharply narrowing tweeter dispersion. Distortion becomes extreme below 50Hz. Its raw 2.71 preference score is weak without a subwoofer, so EQ and careful toe-in are strongly recommended.
Full KRK Classic 5 review and specifications →
| App | No |
|---|---|
| Bass Extension (-3dB) | 60.1Hz (Spinorama/Audio Science Review) |
| Bass Extension (-6dB) | 54.2Hz (Spinorama/Audio Science Review) |
| Bluetooth | No |
| Dimensions | 9.7"H x 7.4"W x 11.2"D (246.4 x 188 x 284.5 mm) |
| Drivers | 5" (127mm) woofer |
| EQ | Yes (Room adjustment) |
| Frequency Response | 56Hz-30KHz (+-3dB) (Manufacturer specified) |
| Inputs | RCA, TRS, XLR |
| Output Power | 50w RMS Per Speaker |
| Spinorama Preference Score | 2.71 without subwoofer; 5.22 with subwoofer |
| Weight | 12.9 lbs / 5.87 kg |
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- Audio Science Review Measurements (spinorama.org)
- Reddit Search for KRK Classic 5 Review
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Genelec 8330A: $2,250/pair Bhphotovideo eBay
Pros: Sits between the compact 8320A and the larger 8331A in Genelec’s SAM lineup, with a die cast aluminum Minimum Diffraction Enclosure and Directivity Control Waveguide that deliver a measured 55.7Hz extension point, well beyond the 8320A’s smaller cabinet. The bass alignment is well damped at a measured Q of 0.379, so the low end rolls off cleanly rather than peaking near the tuning frequency.
Cons: On axis deviation measures 0.324dB average, rougher than several similarly priced monitors in this catalog, and listening window smoothness sits at a moderate 0.38. GLM room calibration requires the separate 9320A SAM Reference Controller or GLM Calibration Kit, an extra cost on top of the speaker price. At $1,125 each it costs roughly double the smaller 8320A for a moderate step up in bass extension and output.
Full Genelec 8330A review and specifications →
| Bass Extension (-10dB) | 44.9Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 55.7Hz (measured, Audio Science Review) |
| Country | Finland |
| Dimensions | 11.8"H x 7.4"W x 7"D (299 x 189 x 178 mm) (11.8 x 7.4 x 7.0 in) |
| Drivers | 0.75" metal dome tweeter, 5.1" cone woofer |
| Enclosure | ported |
| Frequency Response | 45Hz-23kHz -6dB |
| Max SPL | 104dB |
| Power Output (Watts) | 100W total (50W woofer, 50W tweeter, Class D) |
| Warranty | 2 years (5 with product registration) |
| Weight | 11.2 lbs / 5.1 kg (11.2 lbs) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons