Short answer: the Polk Signature Elite ES50. It ranks #156 of 226 floorstanding speakers by sound quality, rated 3.8/5, at $588. The Polk Audio XT70 ranks #170, rated 3.6/5, at $578, $10 cheaper, which does not close the gap in sound quality.
The case for the Polk Signature Elite ES50: Slim compact floorstanding tower in the Signature Elite series featuring dual 5.25-inch mica-reinforced woofers and a 1-inch Terylene high-res dome tweeter. The catch: Rating estimated based on acoustic specifications and measured Signature Elite siblings (Polk Signature Elite ES15, Polk Signature Elite ES20, Polk Signature Elite ES60).
Why pick the Polk Audio XT70: The flagship tower in Polk’s current Monitor XT lineup, sitting above the Polk Audio XT60 and Polk Audio XT15 in the same series, adding a second 6.5” woofer and dual 8” passive radiators for more low-end output. The tradeoff: On-axis smoothness (0.274) and listening-window smoothness (0.303) are unremarkable for a tower this size, with a pronounced +0.28dB per octave upward tonal tilt giving it a brighter-leaning balance and a predicted in-room smoothness of just 0.31.
Buy the Polk Signature Elite ES50. It is rated higher for sound quality, and saving $10 with the Polk Audio XT70 does not make up for the sound-quality gap.
About the ratings: the Polk Signature Elite ES50’s rating is estimated from measured siblings and predecessors rather than its own measurements, with a likely range of 3.6 to 4.0, so this verdict could change once it is measured.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Polk Signature Elite ES50 | Polk Audio XT70 | |
|---|---|---|
| Price | $588 per pair Passive | $578 per pair |
| Ranked | #156 of 226 in Large Size Floorstanding Speakers Estimated | #170 of 226 in Large Size Floorstanding Speakers |
| Crossover Frequency | 2.5kHz | - |
| Dimensions | 37.4” x 10.2” x 10.9” (950 x 260 x 277 mm) | 40.4H x 9.25W x 12.5D in |
| Drivers | 1” Terylene high-res dome tweeter, two 5.25” mica-reinforced polypropylene woofers | 1” Terylene dome tweeter, 2x 6.5” Dynamic Balance woofers, 2x 8” passive radiators |
| Frequency Response | 42Hz - 40kHz | - |
| Impedance | 8 ohms (4-8 ohm compatible) | 4/8 ohm compatible |
| Passive | Yes | - |
| Sensitivity | 89dB (2.83V @ 1m) | 89dB @ 1W/1m |
| Weight | 32 lbs (14.5 kg) each | 35.1 lbs (15.9 kg) each |
| Enclosure | - | Ported, critically-braced MDF |
| Country | - | China |
| Spinorama Preference Score | - | 5.16 |
| Spinorama Preference Score with Perfect Sub | - | 7.10 |
| Bass Extension (-3dB) | - | 43.9Hz (measured, Erin’s Audio Corner via spinorama.org) |
| Bass Extension (-10dB) | - | 37.7Hz (derived, sustained-crossing interpolation, Erin’s Audio Corner via spinorama.org) |
| DIY Kit | - | No |
Related Speaker Comparisons
How Polk Signature Elite ES50 compares with other leading options:
- Polk Signature Elite ES50 vs Polk T50
- Aperion Audio Novus N5T vs Polk Signature Elite ES50
- Polk T50 vs Polk Audio XT70
- Polk Audio XT70 vs Polk Audio XT60
- Polk Audio XT70 vs JBL Stage 2 280F
Prices on this page were last checked October 11, 2026 at 4:59 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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The Two Speakers In Full
Polk Signature Elite ES50: $588 per pair Passive Estimated Amazon eBay
Same family: the Polk Signature Elite ES10 (smallest bookshelf, estimated 3.1/5), the Polk Signature Elite ES15 (bookshelf, rated 3.5/5), the Polk Signature Elite ES20 (largest bookshelf, rated 3.7/5), the Polk Signature Elite ES55 (larger floorstanding, ranked higher, estimated 4/5), the Polk Signature Elite ES60 (larger floorstanding, ranked lower, rated 3.4/5), the Polk Audio Signature Elite ES30 (smaller center, estimated 3.5/5), the Polk Audio Signature Elite ES35 (larger center, estimated 3.4/5), the Polk Audio Signature Elite ES8 Subwoofer (smallest subwoofer, estimated 3.2/5), the Polk Audio Signature Elite ES10 Subwoofer (subwoofer, estimated 3.7/5) and the Polk Audio Signature Elite ES12 Subwoofer (largest subwoofer, estimated 3.8/5). See every Polk Signature generation.
Pros: Slim compact floorstanding tower in the Signature Elite series featuring dual 5.25-inch mica-reinforced woofers and a 1-inch Terylene high-res dome tweeter. Down-firing patented Power Port technology enhances laminar bass airflow and minimizes turbulent port noise, delivering clean extension down into the 40Hz range. Inherits the linear listening window and controlled dispersion demonstrated in Klippel NFS tests of the Polk Signature Elite ES15 and Polk Signature Elite ES60.
Cons: Rating estimated based on acoustic specifications and measured Signature Elite siblings (Polk Signature Elite ES15, Polk Signature Elite ES20, Polk Signature Elite ES60). Dual 5.25-inch drivers provide less low-frequency displacement and punch than the larger Polk Signature Elite ES55 and Polk Signature Elite ES60 towers.
Full Polk Signature Elite ES50 review and specifications →
| Released | Dec 2023 (2 years ago) |
|---|---|
| Crossover Frequency | 2.5kHz |
| Dimensions | 37.4” x 10.2” x 10.9” (950 x 260 x 277 mm) |
| Drivers | 1” Terylene high-res dome tweeter, two 5.25” mica-reinforced polypropylene woofers |
| Frequency Response | 42Hz - 40kHz |
| Impedance | 8 ohms (4-8 ohm compatible) |
| Passive | Yes |
| Sensitivity | 89dB (2.83V @ 1m) |
| Weight | 32 lbs (14.5 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Polk Audio XT70: $578 per pair Amazon eBay
Same family: the Polk Audio XT15 (smaller bookshelf, rated 3.7/5), the Polk Monitor XT20 (larger bookshelf, rated 3.4/5), the Polk Audio XT60 (smaller floorstanding, ranked lower, rated 3.5/5), the Polk Audio XT30 (smaller center, rated 3.6/5), the Polk Audio XT35 (larger center, rated 4.1/5), the Polk Audio Monitor XT10 (smaller subwoofer, estimated 3.1/5) and the Polk Audio Monitor XT12 (larger subwoofer, estimated 3.3/5). See every Polk Monitor generation.
Pros: The flagship tower in Polk’s current Monitor XT lineup, sitting above the Polk Audio XT60 and Polk Audio XT15 in the same series, adding a second 6.5” woofer and dual 8” passive radiators for more low-end output. Rated for both 4 and 8 ohm operation. Measured bass extension of 43.9Hz (-3dB).
Cons: On-axis smoothness (0.274) and listening-window smoothness (0.303) are unremarkable for a tower this size, with a pronounced +0.28dB per octave upward tonal tilt giving it a brighter-leaning balance and a predicted in-room smoothness of just 0.31. Directivity-index standard deviation of 3.33 is unremarkable either way.
Full Polk Audio XT70 review and specifications →
| Released | 2021 (5 years ago) |
|---|---|
| Bass Extension (-10dB) | 37.7Hz (derived, sustained-crossing interpolation, Erin’s Audio Corner via spinorama.org) |
| Bass Extension (-3dB) | 43.9Hz (measured, Erin’s Audio Corner via spinorama.org) |
| Country | China |
| DIY Kit | No |
| Dimensions | 40.4H x 9.25W x 12.5D in |
| Drivers | 1” Terylene dome tweeter, 2x 6.5” Dynamic Balance woofers, 2x 8” passive radiators |
| Enclosure | Ported, critically-braced MDF |
| Impedance | 4/8 ohm compatible |
| Sensitivity | 89dB @ 1W/1m |
| Spinorama Preference Score | 5.16 |
| Spinorama Preference Score with Perfect Sub | 7.10 |
| Weight | 35.1 lbs (15.9 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons