Short answer: the Ascend Acoustics Luna V2 Mini-Monitor Titan. It ranks #10 of 179 bookshelf speakers by sound quality, rated 4.3/5, at $898. The Sony SS-CS5 M2 ranks #93, rated 3.2/5, at $278, $620 cheaper, a saving that is not big enough to make up the sound-quality gap.
The case for the Sony SS-CS5 M2: Budget three way bookshelf speakers with a better braced cabinet and an easy load for a standard receiver. Watch for: Mild sibilance in the 3-5kHz range stands out on S and T sounds in vocals.
The Ascend Acoustics Luna V2 Mini-Monitor Titan is the better-sounding choice. A tiny, affordable bookshelf speaker with accurate sound, a big soundstage for its size and a seven year warranty. The tradeoff: On axis deviation measures 0.599dB average, a comparatively rough figure for this driver class, so a listener sitting dead center is more likely to notice unevenness than with the RAAL ribbon version of this same cabinet.
Buy the Ascend Acoustics Luna V2 Mini-Monitor Titan. It is rated higher for sound quality, and the $620 you would save on the Sony SS-CS5 M2 does not close the gap.
Looking for alternatives? See the complete Passive Home rankings.
Budget three way bookshelf speakers with a better braced cabinet and an easy load for a standard receiver.
A tiny, affordable bookshelf speaker with accurate sound, a big soundstage for its size and a seven year warranty.
Prices on this page were last checked October 31, 2026 at 7:11 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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Specifications Side By Side
| Sony SS-CS5 M2 | Ascend Acoustics Luna V2 Mini-Monitor Titan | |
|---|---|---|
| Price | $278.00 per pair | $898 per pair |
| Ranked | #93 of 179 in Medium Size Bookshelf Speakers | #10 of 179 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 54Hz (measured, Erin’s Audio Corner) | 45.7Hz (measured, spinorama.org vendor data) |
| Bass Extension (-3dB) | 80Hz (measured, Erin’s Audio Corner) | 74.7Hz (measured, spinorama.org vendor data) |
| Dimensions | 13.2”H x 7”W x 8.7”D (335 x 178 x 220 mm) | 10.6”H x 5.7”W x 6”D (270 x 146 x 152 mm) |
| Impedance | 6 ohms | 8 ohms nominal |
| Sensitivity | 82.5dB | 82dB @ 2.83V/1m anechoic (manufacturer) |
| Drivers | 5.12” woofer, 0.98 in tweeter; 0.75-inch supertweeter; 0.75-inch supertweeter; 0.75-inch supertweeter; 0.75-inch supertweeter | SEAS Titan 26mm aluminum/magnesium dome tweeter, 4.5” long throw glass fiber cone woofer |
| Weight | 9.5 lbs (4.3 kg) each | 8.3 lbs (3.75 kg) each |
| Woofer Cabinet | ported, rear | - |
| DIY Kit | No | No |
| Enclosure | - | ported |
| Power Handling | - | 100W continuous, 150W peak |
| Frequency Response | - | 75-27,000Hz +/-3dB anechoic (manufacturer) |
| Warranty | - | 7 years parts and labor |
| Country | - | United States |
| Spinorama Preference Score | - | 5.17 |
| Spinorama Preference Score with Perfect Sub | - | 7.78 |
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