Short answer: the Genelec 8331A is the more capable monitor, while the 8020D is the simpler small-room choice. The 8331A’s coaxial point source delivers exceptionally uniform directivity and pinpoint imaging, though it is expensive and mutes near its limit. The 8020D’s Klippel spinorama is flat on axis from about 60Hz to 10kHz, but sound power rolls off from around 500Hz-1kHz as its 4.1” drivers begin to beam.
What the Genelec 8331A gets right: A true compact point source: the coaxial mid/tweeter and acoustically concealed opposed woofers produce exceptionally uniform directivity, superb nearfield summation and pinpoint imaging. The catch: At $5,750 a pair it is expensive for a monitor whose protection circuit mutes near its limit rather than allowing short-term overload; larger rooms and bass-heavy playback still benefit from a subwoofer.
Buy the Genelec 8331A if sound quality is the priority over the price, or the Genelec 8020D if the price is the priority over sound quality.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| Genelec 8331A | Genelec 8020D | |
|---|---|---|
| Price | $5750 per pair | $1,390 per pair |
| Ranked | #1 of 68 in Medium Size Powered Bookshelf Speakers | #11 of 68 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 49Hz (measured, Erin’s Audio Corner) | 56Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | 50Hz (measured, Audio Science Review) |
| Maximum SPL | 100dB at 3m before protection (measured, Erin’s Audio Corner) | 103dB @ 1m (manufacturer specified) |
| Amplifier Power | 72W LF + 36W MF + 36W HF | 100W (50W woofer + 50W tweeter) |
| Drivers | Dual 130x65mm woofers; 90mm coaxial mid; 19mm tweeter | 4.1” woofer, 0.75” metal dome tweeter |
| Dimensions | 12”H x 7.4”W x 8.3”D (305 x 189 x 212 mm) | 9.5”H x 5.8”W x 5.6”D (241.3 x 147.3 x 142.2 mm) |
| Weight | 14.8 lbs (6.7kg) each | 7.1 lbs (3.2 kg) each |
| Spinorama Preference Score | 6.57 | - |
| Spinorama Preference Score with Perfect Sub | 8.51 | - |
| Inputs | XLR, AES/EBU | XLR |
| XLR Input | Yes | Yes |
| RCA Input | No | No |
| TRS Input | No | No |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | Yes | No |
| Aux Input | No | No |
| Bluetooth | No | No |
| Frequency Response | 45Hz - 37kHz (-6dB) (Manufacturer specified) | 56 Hz - 25 kHz (-6 dB) (Manufacturer specified) |
| App | - | No |
| EQ | - | Yes (Bass tilt, desk proximity) |
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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
Genelec 8331A: $5750 per pair B&H Photo Video eBay
Pros: Erin’s Klippel measurements support its reference-monitor credentials: a 1.4dB response span from 300Hz to 5kHz, low listening-window and predicted-room irregularity, and preference scores of 6.57 standalone and 8.51 with an ideal subwoofer. The coaxial mid/tweeter and concealed woofers maintain coherent radiation as listening position changes. Bass reaches -3dB around 48Hz, and GLM adds level, delay and room-response calibration. Measured bass extension of 49Hz (-3dB).
Cons: Expensive, with studio-oriented XLR connectivity rather than consumer streaming. The compact woofers still limit deep-bass output, and the review reports protection muting when pushed beyond its operating range. GLM calibration hardware is an additional purchase. Its excellent tonal score does not remove the need for a subwoofer or larger monitor at demanding levels.
Full Genelec 8331A review and specifications →
| AES Input | Yes |
|---|---|
| Amplifier Power | 72W LF + 36W MF + 36W HF |
| Aux Input | No |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 49Hz (measured, Erin’s Audio Corner) |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 12”H x 7.4”W x 8.3”D (305 x 189 x 212 mm) |
| Drivers | Dual 130x65mm woofers; 90mm coaxial mid; 19mm tweeter |
| Frequency Response | 45Hz - 37kHz (-6dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR, AES/EBU |
| Maximum SPL | 100dB at 3m before protection (measured, Erin’s Audio Corner) |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 6.57 |
| Spinorama Preference Score with Perfect Sub | 8.51 |
| TRS Input | No |
| USB Input | No |
| Weight | 14.8 lbs (6.7kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Genelec 8020D: $1,390 per pair B&H Photo Video eBay
Pros: A compact waveguided monitor with balanced XLR input and placement filters, well suited to a small studio desk. Klippel measurements show a flat, well-behaved on-axis response from about 60Hz to 10kHz, with listening-window and early-reflection curves tracking closely, a sign of well-controlled directivity. Measured bass extension of 56Hz (-3dB).
Cons: Small size limits deep-bass reach and headroom. It lacks the GLM calibration of the SAM models, and the price is substantial for a compact analog-input monitor. Sound power starts rolling off around 500Hz to 1kHz as the small drivers begin to beam.
Full Genelec 8020D review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 100W (50W woofer + 50W tweeter) |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 50Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 56Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 9.5”H x 5.8”W x 5.6”D (241.3 x 147.3 x 142.2 mm) |
| Drivers | 4.1” woofer, 0.75” metal dome tweeter |
| EQ | Yes (Bass tilt, desk proximity) |
| Frequency Response | 56 Hz - 25 kHz (-6 dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR |
| Maximum SPL | 103dB @ 1m (manufacturer specified) |
| Optical Input | No |
| RCA Input | No |
| TRS Input | No |
| USB Input | No |
| Weight | 7.1 lbs (3.2 kg) each |
| XLR Input | Yes |
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