Short answer: a tie on sound quality. Both are rated 4.6/5 (#17 and #16 of 119 powered bookshelf speakers), so choose on features and fit.
Why pick the LOGProfessional Alpha: Active two-way monitors with a particularly even midrange, a strong choice for a system with a properly matched subwoofer. Watch for: The measured -3dB point is 67.1Hz, making a subwoofer important for full-range listening.
What the ADAM Audio S2V does well: Studio monitors with even, low distortion sound and a ribbon tweeter, best paired with a subwoofer, plus DSP for room tuning. The catch: Measured -3dB extension is 52.7Hz, so the large cabinet does not automatically deliver the deepest bass here.
Buy the LOGProfessional Alpha or the ADAM Audio S2V 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.
Active two-way monitors with a particularly even midrange, a strong choice for a system with a properly matched subwoofer.
Studio monitors with even, low distortion sound and a ribbon tweeter, best paired with a subwoofer, plus DSP for room tuning.
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Specifications Side By Side
| LOGProfessional Alpha | ADAM Audio S2V | |
|---|---|---|
| Price | €11,560 per pair | $3,399.98 per pair |
| Ranked | #17 of 119 in Large Size Powered Bookshelf Speakers | #16 of 119 in Large Size Powered Bookshelf Speakers |
| Enclosure | 2-way active, bass-reflex, low-vibration housing | - |
| Drivers | 1” dome tweeter, 6.5” bass-midrange woofer | 7” woofer, S-ART AMT tweeter |
| Dimensions | 13.4”W x 8.7”H x 8.7”D (340 x 220 x 220 mm) | 13.6” x 8.7” x 13.3” (346 x 222 x 338 mm) (H x W x D) |
| Weight | 15.4 lbs (7 kg) each | 24.3 lbs (11.0 kg) |
| Amplifier Power | 2x 70W Class A/B | 350W total (300W woofer Class D, 50W tweeter Class A/B) |
| Inputs | Digital and analog XLR, 192kHz/24-bit DSP | XLR, AES/EBU |
| Country | Graz, Austria | - |
| Maximum SPL | 112dB (manufacturer specified) | - |
| Spinorama Preference Score | 5.92 | 5.84 |
| Spinorama Preference Score with Perfect Sub | 8.26 | 7.98 |
| 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 | Yes |
| Aux Input | No | No |
| Bluetooth | No | No |
| Frequency Response | 32Hz - 22kHz (Manufacturer specified) | 35Hz - 50kHz (Manufacturer specified) |
| Bass Extension (-3dB) | - | 52.7Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | - | 41.2Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| App | - | Yes |
| EQ | - | No |
| DSP | - | Yes |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared. The two were measured by different sources, so small differences, especially in the bass, can come from the measurement setup rather than the speakers.
Measurement data: LOGProfessional Alpha (measured by an independent reviewer) and ADAM Audio S2V (measured by Audio Science Review), via spinorama.org.
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