Short answer: the Audio First Cadentia 3 on measured sound quality, the Polk Signature Elite ES20 on price. The Audio First Cadentia 3 ranks #7 of 222 bookshelf speakers, rated 4.7/5, at $7,199. The Polk Signature Elite ES20 ranks #119, rated 3.7/5, at $398.98, $6,800.02 cheaper.
The Audio First Cadentia 3 is the more accurate, deeper-bass choice. A large three way bookshelf speaker with near textbook accuracy, a big enveloping soundstage, and deep, punchy bass that stays clean when loud. Its measured preference score, a predictor of how neutral it sounds, is 7.55 against 4.49 for the Polk Signature Elite ES20. Its bass reaches about 43Hz before falling 3dB, against 55.7Hz for the Polk Signature Elite ES20. The catch: A mild scoop through the upper midrange/lower treble slightly softens the attack of snares, hand claps, and sibilants: fixable with a single-band EQ (2.5kHz, +1dB, Q~1).
What the Polk Signature Elite ES20 does well: Large, efficient bookshelf speakers with unusually deep bass for the price and wide horizontal coverage. The catch: Predicted in-room smoothness of 0.238 and directivity-index consistency of 3.81 are average rather than class-leading.
Buy the Audio First Cadentia 3 when sound quality outweighs the price for you, and the Polk Signature Elite ES20 when the price outweighs sound quality instead.
Looking for alternatives? See the complete Passive Home rankings.
A large three way bookshelf speaker with near textbook accuracy, a big enveloping soundstage, and deep, punchy bass that stays clean when loud.
Large, efficient bookshelf speakers with unusually deep bass for the price and wide horizontal coverage.
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
| Audio First Cadentia 3 | Polk Signature Elite ES20 | |
|---|---|---|
| Price | $7199 per pair | $398.98 per pair |
| Ranked | #7 of 222 in Large Size Bookshelf Speakers | #119 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 26Hz (measured, Erin’s Audio Corner) | 38.6Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 43Hz (measured, Erin’s Audio Corner) | 55.7Hz (measured, ASR via spinorama.org) |
| Dimensions | 23.2” x 11.8” x 17” (590 x 300 x 433 mm) | 14.8H x 8.5W x 13.8D in |
| Impedance | 4 ohms nominal (3.1 ohms minimum, measured by Erin’s Audio Corner) | 4/8-ohm compatible |
| Sensitivity | 86.4dB (2.83V/1m, measured by Erin’s Audio Corner) | 86dB |
| Drivers | 1.1” tweeter, 4.5” midrange, 9” woofer | 1” Terylene dome tweeter, 6.5” polypropylene woofer |
| Weight | 45.9 lbs (20.8 kg) each | 17 lbs (7.7 kg) each |
| Woofer Cabinet | 3-way, bass reflex | - |
| Country | United Kingdom (Cambridge) | United States (design) |
| Spinorama Preference Score | 7.55 | 4.49 |
| Spinorama Preference Score with Perfect Sub | 8.91 | 6.44 |
| DIY Kit | No | No |
| Enclosure | - | 2-way, Power Port bass-reflex |
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