Short answer: a tie on sound quality. Both are rated 4.6/5 (#14 and #17 of 68 powered bookshelf speakers), so choose on features and fit.
Why pick the LOGProfessional Alpha: 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.
The case for the Neumann KH 310 A: The sealed three-way design combines 35.2Hz measured -3dB extension with low distortion in the review’s demanding playback tests. The tradeoff: Its measured tonal balance is not as even as the KH 150 or the best coaxial alternatives.
Buy the LOGProfessional Alpha or the Neumann KH 310 A on features: they are rated the same for sound quality at close to the same price.
Looking for alternatives? See the complete Powered Home rankings.
Specifications Side By Side
| LOGProfessional Alpha | Neumann KH 310 A | |
|---|---|---|
| Price | €11,560 per pair | $4,998 per pair |
| Ranked | #14 of 68 in Large Size Powered Bookshelf Speakers | #17 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 | 8.25” woofer, 3” midrange, 1” tweeter |
| Dimensions | 13.4”W x 8.7”H x 8.7”D (340 x 220 x 220 mm) | 10” x 15.1” x 11.5” (253 x 383 x 292 mm) (H x W x D) |
| Weight | 15.4 lbs (7 kg) each | 28.7 lbs (13.0 kg) |
| Amplifier Power | 2x 70W Class A/B | 290W total (150W woofer, 70W mid, 70W tweeter) |
| Inputs | Digital and analog XLR, 192kHz/24-bit DSP | XLR (balanced analog) |
| Country | Graz, Austria | - |
| Maximum SPL | 112dB (manufacturer specified) | - |
| Spinorama Preference Score | 5.92 | 6.21 |
| Spinorama Preference Score with Perfect Sub | 8.26 | 7.70 |
| 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 | No | No |
| Aux Input | No | No |
| Bluetooth | No | No |
| Frequency Response | 32Hz - 22kHz (Manufacturer specified) | 34Hz - 21kHz (+/-3dB) (Manufacturer specified) |
| Bass Extension (-3dB) | - | 35.2Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | - | 28.3Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| App | - | No |
| EQ | - | No |
| DSP | - | No |
Related Speaker Comparisons
How LOGProfessional Alpha compares with other leading options:
- Buchardt A10 vs LOGProfessional Alpha
- LOGProfessional Alpha vs Adam Audio S2V
- LOGProfessional Alpha vs Genelec S360
- LOGProfessional Alpha vs Genelec 8050B
- Neumann KH 310 A vs HEDD Type 20 MK2
Prices on this page were last checked September 29, 2026 at 3:43 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
Neumann KH 310 A: $4,998 per pair B&H Photo Video eBay
Pros: The sealed three-way design combines 35.2Hz measured -3dB extension with low distortion in the review’s demanding playback tests. Its 2.2dB response span from 300Hz to 5kHz and 7.70 ideal-subwoofer score support balanced monitoring with useful full-range capability. Measured bass extension of 35.2Hz (-3dB).
Cons: Its measured tonal balance is not as even as the KH 150 or the best coaxial alternatives. Correct orientation and listening height matter for the separated drivers. The analog system lacks the integrated calibration workflow of newer DSP models, so room correction requires additional equipment. An unexplained dip around 80Hz shows in the measurements.
Full Neumann KH 310 A review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 290W total (150W woofer, 70W mid, 70W tweeter) |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 28.3Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 35.2Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| DSP | No |
| Dimensions | 10” x 15.1” x 11.5” (253 x 383 x 292 mm) (H x W x D) |
| Drivers | 8.25” woofer, 3” midrange, 1” tweeter |
| EQ | No |
| Frequency Response | 34Hz - 21kHz (+/-3dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR (balanced analog) |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 6.21 |
| Spinorama Preference Score with Perfect Sub | 7.70 |
| TRS Input | No |
| USB Input | No |
| Weight | 28.7 lbs (13.0 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Neumann KH 310 A vs HEDD Type 20 MK2
- Neumann KH 310 A vs Genelec S360
- Neumann KH 310 A vs Adam Audio S2V
- Neumann KH 310 A vs JBL 308P MKII
- Neumann KH 310 A vs Buchardt A10
- Neumann KH 310 A vs Yamaha HS8
- Neumann KH 310 A vs Kali Audio LP-6 V2
- Neumann KH 310 A vs Kali Audio IN-8 V2
- See all 35 comparisons