Short answer: the Wharfedale Aura 2 if sound quality matters most, the Polk Signature Elite ES20 if price matters most. The Wharfedale Aura 2 ranks #13 of 222 bookshelf speakers, rated 4.6/5, at $2,799. The Polk Signature Elite ES20 ranks #119, rated 3.7/5, at $398.98, $2,400.02 cheaper.
The Wharfedale Aura 2 is the more accurate option. A mini tower style bookshelf speaker with nearly flat response, huge clean output, wide sound, and bass that reaches deep in most rooms. Its measured preference score, a predictor of how neutral it sounds, is 6.03 against 4.49 for the Polk Signature Elite ES20. Watch for: A breakup/peak around 13kHz can sound sharp or shrill depending on the track, the main tonal flaw noted.
The case for the Polk Signature Elite ES20: Large, efficient bookshelf speakers with unusually deep bass for the price and wide horizontal coverage. Watch for: Predicted in-room smoothness of 0.238 and directivity-index consistency of 3.81 are average rather than class-leading.
Buy the Wharfedale Aura 2 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 mini tower style bookshelf speaker with nearly flat response, huge clean output, wide sound, and bass that reaches deep in most rooms.
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
| Wharfedale Aura 2 | Polk Signature Elite ES20 | |
|---|---|---|
| Price | $2799 per pair | $398.98 per pair |
| Ranked | #13 of 222 in Large Size Bookshelf Speakers | #119 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 30Hz (measured, Erin’s Audio Corner) | 38.6Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 56Hz (measured, Erin’s Audio Corner) | 55.7Hz (measured, ASR via spinorama.org) |
| Dimensions | 22.1”H x 11.3”W x 15.3”D (561.3 x 287 x 388.6 mm) | 14.8H x 8.5W x 13.8D in |
| Impedance | 6 ohms nominal (3.1 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 4/8-ohm compatible |
| Drivers | 6.5” Black Glass Fibre Matrix Cone woofer, 4” Black Glass Fibre Matrix Cone midrange, 27x90mm AMT tweeter | 1” Terylene dome tweeter, 6.5” polypropylene woofer |
| Sensitivity | 87dB (measured, Erin’s Audio Corner) | 86dB |
| Weight | 45 lbs (20.4 kg) each | 17 lbs (7.7 kg) each |
| Woofer Cabinet | ported, rear | - |
| Spinorama Preference Score | 6.03 | 4.49 |
| Spinorama Preference Score with Perfect Sub | 7.65 | 6.44 |
| DIY Kit | No | No |
| Enclosure | - | 2-way, Power Port bass-reflex |
| Country | - | United States (design) |
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