Short answer: the Aalto Speakers Aalto 1 EVO. It ranks #11 of 87 bookshelf speakers by sound quality; the Sony SS-CS5 M2 ranks #48.
What the Sony SS-CS5 M2 offers: Added internal bracing (corners, sides, front baffle) plus an updated crossover meaningfully reduce the resonance issues that plagued the original SS-CS5, giving a smoother, more neutral character overall. A modest mid-range dip (about 1-2dB) is present but tolerable, and the reviewer would rather have this dip than a peak in that region. Slightly deeper bass than the previous version, measuring about 2dB more output around 60Hz. Distortion drops noticeably when crossed to a subwoofer around 80-120Hz, meaningfully improving midrange clarity and detail versus running full-range. Easy to drive on a standard AVR - no need for a dedicated high-power amplifier. More modern, understated waveguide look compared to the previous version’s glossy trim. Watch for: Mild sibilance in the 3-5kHz range stands out on S and T sounds in vocals. Some forwardness in the midrange noticeable on certain vocal recordings. Soundstage and sense of envelopment are comparatively flat and two-dimensional, especially next to reference-quality speakers with strong 3D imaging. Marketed as a “three-way” design mainly due to an added super-tweeter that the reviewer considers largely superfluous - it engages only at very high frequencies and adds complexity without a clearly audible benefit, when that cost might have been better spent on the main crossover. Output-limited: realistic ceiling is around the mid-90s dB SPL at a few meters, with comfortable listening closer to 75-85dB at 3-4 meters before distortion and compression become audible. Bass noticeably compresses/shelves below about 120Hz as volume increases, softening kick-drum impact at higher output. Smaller drivers and a lighter motor structure than rivals like the Polk XT20, which the reviewer generally prefers for its better directivity and higher SPL capability. Still needs a subwoofer for any real bass extension.
What the Aalto Speakers Aalto 1 EVO offers: Excellent local Spinorama results for a very compact passive speaker: 5.12 raw and 7.45 with a subwoofer. Its redesigned crossover, waveguided titanium tweeter and controlled directivity support neutral in-room response, while the recyclable Finnish composite enclosure is unusually compact. Watch for: Low 81.5dB sensitivity and a 3.3-ohm minimum impedance demand a capable amplifier. The measured 50Hz extension is respectable for the size but a subwoofer is still strongly recommended, and US distribution is limited.
Buy the Sony SS-CS5 M2 if the price matters more than sound quality. Buy the Aalto Speakers Aalto 1 EVO if sound quality matters more than the price.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Sony SS-CS5 M2 | Aalto Speakers Aalto 1 EVO | |
|---|---|---|
| Price | $277.99 per pair | €599 per pair |
| Ranked | #48 of 87 in Medium Size Bookshelf Speakers | #11 of 87 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 54Hz (measured, Erin's Audio Corner) | - |
| Bass Extension (-3dB) | 80Hz (measured, Erin's Audio Corner) | - |
| Dimensions | 13.2"H x 7"W x 8.7"D (335 x 178 x 220 mm) | 9.5"H x 5.2"W x 8.2"D (242 x 132 x 208 mm) |
| Impedance | 6 ohms | 4 ohms nominal, 3.3 ohms minimum |
| Sensitivity | 82.5dB | 81.5dB/2.83V/1m |
| Drivers | 5.12" woofer, 0.98 in tweeter; 0.75-inch supertweeter; 0.75-inch supertweeter; 0.75-inch supertweeter; 0.75-inch supertweeter | 1-inch titanium tweeter, 4-inch woofer |
| Weight | 9.5 lbs (4.3 kg) each | 5.3 lbs (2.4 kg) each |
| Woofer Cabinet | ported, rear | - |
| Enclosure | - | Passive 2-way bass reflex |
| Frequency Response | - | 53Hz-30kHz |
| Power Handling | - | 15-100W |
| Country | - | Finland |
| Spinorama Preference Score | - | 5.12 |
| Spinorama Preference Score with Perfect Sub | - | 7.45 |
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The Two Speakers In Full
Sony SS-CS5 M2: $277.99 per pair Amazon eBay
Pros: Added internal bracing (corners, sides, front baffle) plus an updated crossover meaningfully reduce the resonance issues that plagued the original SS-CS5, giving a smoother, more neutral character overall. A modest mid-range dip (about 1-2dB) is present but tolerable, and the reviewer would rather have this dip than a peak in that region. Slightly deeper bass than the previous version, measuring about 2dB more output around 60Hz. Distortion drops noticeably when crossed to a subwoofer around 80-120Hz, meaningfully improving midrange clarity and detail versus running full-range. Easy to drive on a standard AVR - no need for a dedicated high-power amplifier. More modern, understated waveguide look compared to the previous version’s glossy trim. Measured bass extension of 80Hz (-3dB).
Cons: Mild sibilance in the 3-5kHz range stands out on S and T sounds in vocals. Some forwardness in the midrange noticeable on certain vocal recordings. Soundstage and sense of envelopment are comparatively flat and two-dimensional, especially next to reference-quality speakers with strong 3D imaging. Marketed as a “three-way” design mainly due to an added super-tweeter that the reviewer considers largely superfluous - it engages only at very high frequencies and adds complexity without a clearly audible benefit, when that cost might have been better spent on the main crossover. Output-limited: realistic ceiling is around the mid-90s dB SPL at a few meters, with comfortable listening closer to 75-85dB at 3-4 meters before distortion and compression become audible. Bass noticeably compresses/shelves below about 120Hz as volume increases, softening kick-drum impact at higher output. Smaller drivers and a lighter motor structure than rivals like the Polk XT20, which the reviewer generally prefers for its better directivity and higher SPL capability. Still needs a subwoofer for any real bass extension.
Full Sony SS-CS5 M2 review and specifications →
| Bass Extension (-10dB) | 54Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 80Hz (measured, Erin's Audio Corner) |
| Dimensions | 13.2"H x 7"W x 8.7"D (335 x 178 x 220 mm) |
| Drivers | 5.12" woofer, 0.98 in tweeter; 0.75-inch supertweeter; 0.75-inch supertweeter; 0.75-inch supertweeter; 0.75-inch supertweeter |
| Impedance | 6 ohms |
| Sensitivity | 82.5dB |
| Weight | 9.5 lbs (4.3 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Aalto Speakers Aalto 1 EVO: €599 per pair Aalto Speakers eBay
Pros: Excellent local Spinorama results for a very compact passive speaker: 5.12 raw and 7.45 with a subwoofer. Its redesigned crossover, waveguided titanium tweeter and controlled directivity support neutral in-room response, while the recyclable Finnish composite enclosure is unusually compact.
Cons: Low 81.5dB sensitivity and a 3.3-ohm minimum impedance demand a capable amplifier. The measured 50Hz extension is respectable for the size but a subwoofer is still strongly recommended, and US distribution is limited.
Full Aalto Speakers Aalto 1 EVO review and specifications →
| Country | Finland |
|---|---|
| Dimensions | 9.5"H x 5.2"W x 8.2"D (242 x 132 x 208 mm) |
| Drivers | 1-inch titanium tweeter, 4-inch woofer |
| Enclosure | Passive 2-way bass reflex |
| Frequency Response | 53Hz-30kHz |
| Impedance | 4 ohms nominal, 3.3 ohms minimum |
| Power Handling | 15-100W |
| Sensitivity | 81.5dB/2.83V/1m |
| Spinorama Preference Score | 5.12 |
| Spinorama Preference Score with Perfect Sub | 7.45 |
| Weight | 5.3 lbs (2.4 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- Aalto Speakers Aalto 1 EVO vs Ascend Acoustics HTM-200SE2
- Aalto Speakers Aalto 1 EVO vs XMechanik Mechano23 DIY
- Aalto Speakers Aalto 1 EVO vs Elac Carina BS243.4
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