Short answer: the LOGProfessional Alpha. It ranks #14 of 68 powered bookshelf speakers by sound quality (rated 4.6/5); the Kali Audio LP-6 V2 ranks #25 (rated 4.4/5).
What the LOGProfessional Alpha does well: Sound & Recording’s measurements show a 1.2dB response span from 300Hz to 5kHz and a 8.26 ideal-subwoofer score. The catch: The measured -3dB point is 67.1Hz, making a subwoofer important for full-range listening.
What the Kali Audio LP-6 V2 does well: Erin’s measurements give a 7.48 ideal-subwoofer score and 42.5Hz -3dB bass extension, a strong combination for an affordable nearfield monitor. Watch for: The 2.5dB response span from 300Hz to 5kHz leaves some tonal unevenness.
Buy the LOGProfessional Alpha. It is rated higher for sound quality than the Kali Audio LP-6 V2.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| LOGProfessional Alpha | Kali Audio LP-6 V2 | |
|---|---|---|
| Price | €11,560 per pair | $398 per pair |
| Ranked | #14 of 68 in Large Size Powered Bookshelf Speakers | #25 of 68 in Large Size Powered Bookshelf Speakers |
| Enclosure | 2-way active, bass-reflex, low-vibration housing | - |
| Drivers | 1” dome tweeter, 6.5” bass-midrange woofer | 1” soft-dome tweeter; 6.5” woofer |
| Dimensions | 13.4”W x 8.7”H x 8.7”D (340 x 220 x 220 mm) | 14.1”H x 8.8”W x 10.2”D |
| Weight | 15.4 lbs (7 kg) each | 15.5 lbs (7.05 kg) each |
| Amplifier Power | 2x 70W Class A/B | 40W LF + 40W HF per speaker; Bi-amplified Class D |
| Inputs | Digital and analog XLR, 192kHz/24-bit DSP | XLR, balanced TRS and RCA |
| Country | Graz, Austria | - |
| Maximum SPL | 112dB (manufacturer specified) | Approximately 102dB per pair with good measured linearity (Erin’s Audio Corner) (manufacturer specified) |
| Spinorama Preference Score | 5.92 | 5.53 |
| Spinorama Preference Score with Perfect Sub | 8.26 | 7.48 |
| XLR Input | Yes | Yes |
| RCA Input | No | Yes |
| TRS Input | No | Yes |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | No |
| Bluetooth | No | No |
| Frequency Response | 32Hz - 22kHz (Manufacturer specified) | 47Hz - 21kHz (±3dB) (Manufacturer specified) |
| Bass Extension (-3dB) | - | 42Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | - | 39.1Hz (measured, Erin’s Audio Corner) |
| DSP | - | Yes; boundary presets and LF/HF trims |
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Prices on this page were last checked September 30, 2026 at 2:57 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
LOGProfessional Alpha: €11,560 per pair LOGProfessional eBay
Pros: Sound & Recording’s measurements show a 1.2dB response span from 300Hz to 5kHz and a 8.26 ideal-subwoofer score. This supports a particularly even midrange and makes the Alpha a promising choice for a system with properly integrated bass support.
Cons: The measured -3dB point is 67.1Hz, making a subwoofer important for full-range listening. A smooth midrange is not proof of high clean output or uniformly controlled dispersion.
Full LOGProfessional Alpha review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 2x 70W Class A/B |
| Aux Input | No |
| Bluetooth | No |
| Coaxial Input | No |
| Country | Graz, Austria |
| Dimensions | 13.4”W x 8.7”H x 8.7”D (340 x 220 x 220 mm) |
| Drivers | 1” dome tweeter, 6.5” bass-midrange woofer |
| Enclosure | 2-way active, bass-reflex, low-vibration housing |
| Frequency Response | 32Hz - 22kHz (Manufacturer specified) |
| HDMI Input | No |
| Inputs | Digital and analog XLR, 192kHz/24-bit DSP |
| Maximum SPL | 112dB (manufacturer specified) |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 5.92 |
| Spinorama Preference Score with Perfect Sub | 8.26 |
| TRS Input | No |
| USB Input | No |
| Weight | 15.4 lbs (7 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Kali Audio LP-6 V2: $398 per pair Amazon B&H Photo Video eBay
Older model: the Kali Audio LP-6 (ranked lower, rated 4.3/5).
Pros: Erin’s measurements give a 7.48 ideal-subwoofer score and 42.5Hz -3dB bass extension, a strong combination for an affordable nearfield monitor. The waveguide and placement switches help with practical setup, and the second generation improves close-range noise behavior. Measured bass extension of 42Hz (-3dB).
Cons: The 2.5dB response span from 300Hz to 5kHz leaves some tonal unevenness. Vertical crossover behavior makes ear-height placement important, and compression limits loud bass playback. Its good tonal score is not evidence of the output capability of a much larger monitor.
Full Kali Audio LP-6 V2 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 40W LF + 40W HF per speaker; Bi-amplified Class D |
| Aux Input | No |
| Bass Extension (-10dB) | 39.1Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 42Hz (measured, Erin’s Audio Corner) |
| Bluetooth | No |
| Coaxial Input | No |
| DSP | Yes; boundary presets and LF/HF trims |
| Dimensions | 14.1”H x 8.8”W x 10.2”D |
| Drivers | 1” soft-dome tweeter; 6.5” woofer |
| Frequency Response | 47Hz - 21kHz (±3dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR, balanced TRS and RCA |
| Maximum SPL | Approximately 102dB per pair with good measured linearity (Erin’s Audio Corner) (manufacturer specified) |
| Optical Input | No |
| RCA Input | Yes |
| Spinorama Preference Score | 5.53 |
| Spinorama Preference Score with Perfect Sub | 7.48 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 15.5 lbs (7.05 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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