Short answer: the StarkSound Beta 5 for better sound quality, the Klipsch RP-600M II for the lower price. The StarkSound Beta 5 ranks #46 of 130 bookshelf speakers at $499. The Klipsch RP-600M II ranks #74 at $449.99, $49.01 cheaper.
What the Klipsch RP-600M II offers: Redesigned waveguide extends flush to the baffle edge, reducing diffraction compared to the original RP-600M. Roughly 10-20° wider horizontal radiation than the original, giving more soundstage envelopment while retaining precise imaging. A major step up in overall tonal neutrality compared to the original RP-600M, largely eliminating that model’s midrange resonance issues. Unusually, sounds better with the grille on - the grille smooths out the elevated treble rather than degrading the sound, a rare trait among speakers the reviewer has tested. More refined back-panel hardware, including anodized binding posts and jumper cables for optional bi-amping. Responds well to EQ correction (verified using measurement software and a miniDSP), letting the on-axis response be made genuinely linear. Watch for: On-axis, the treble runs notably hot - even hotter than the original RP-600M in some respects - and needs about 20° of toe-out or the grille installed to sound balanced. Horizontal dispersion is very slightly less linear across angles than the original RP-600M, a minor trade-off for the wider overall radiation pattern. Klipsch’s marketed sensitivity (about 94.5dB) is, like the original, a half-space rating roughly 9dB above the anechoic reality (closer to 85-86dB). In-room bass rolls off around 60Hz in practice, and a 120Hz boost paired with a midrange scoop gives kick drums their “tambour” without real low-end weight - a subwoofer is still recommended. Vertical listening tolerance is limited to about ±10° from the tweeter axis. Toeing the speaker out for better on-axis tonality (rather than using the grille) introduces slightly more diffuse imaging from added sidewall reflections.
What the StarkSound Beta 5 offers: Impressive bass extension for the price - F3 at 52Hz, F10 at 37Hz, reaching down to 40-50Hz in-room with solid kick-drum impact. Good harmonic distortion control at both moderate and loud listening levels. Solid build with a thick polycarbonate baffle meant to reduce cabinet resonance. Watch for: Sensitivity undershoots its own spec - rated 86dB, measured closer to 83dB. A resonance artifact shows up independently in the on-axis response, burst decay, and impedance measurements, hurting directivity. Multitone distortion spikes to about 10% in the 800Hz-1kHz range, tied to woofer excursion - a subwoofer crossover helps. Needs to sit close to the wall (about 10 inches) or be EQ’d if placed further out, since the midrange sounds thin and the treble boosted otherwise.
Buy the Klipsch RP-600M II if the price matters more than sound quality. Buy the StarkSound Beta 5 if sound quality matters more than the price.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Klipsch RP-600M II | StarkSound Beta 5 | |
|---|---|---|
| Price | $449.99 per pair | $499 per pair |
| Ranked | #74 of 130 in Large Size Bookshelf Speakers | #46 of 130 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 41Hz (measured, Erin's Audio Corner) | 37Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 70Hz (measured, Erin's Audio Corner) | 52Hz (measured, Erin's Audio Corner) |
| Dimensions | 15.7"H x 8"W x 12.5"D (398.8 x 203.2 x 317.5 mm) | 11.9" x 7.2" x 13" (302 x 182 x 330 mm) |
| Impedance | 8 ohms nominal (3.5 ohms minimum above 80Hz, measured by Erin's Audio Corner) | 4 ohms nominal |
| Sensitivity | 86dB (measured, Erin's Audio Corner) | 83dB (2.83V/1m, measured by Erin's Audio Corner) |
| Drivers | 6.5" Cerametallic cone woofer, 1" titanium LTS vented tweeter with Tractrix horn | 1.15" tweeter, 5.25" dry-carbon woofer |
| Weight | 13 lbs (5.9 kg) each | 15 lbs (6.8 kg) |
| Woofer Cabinet | ported | Bass reflex, rear ported |
| Spinorama Preference Score | 4.75 | - |
| Spinorama Preference Score with Perfect Sub | 6.88 | - |
| Frequency Response | - | 45Hz - 23kHz (-3dB, Manufacturer specified) |
| Crossover Frequency | - | 2200Hz |
| Maximum SPL | - | 108dB (1m, Manufacturer specified) |
| Recommended Power | - | 30W - 150W |
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Prices on this page were last checked September 16, 2026 at 12:41 AM 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
Klipsch RP-600M II: $449.99 per pair Amazon eBay
Pros: Redesigned waveguide extends flush to the baffle edge, reducing diffraction compared to the original RP-600M. Roughly 10-20° wider horizontal radiation than the original, giving more soundstage envelopment while retaining precise imaging. A major step up in overall tonal neutrality compared to the original RP-600M, largely eliminating that model’s midrange resonance issues. Unusually, sounds better with the grille on - the grille smooths out the elevated treble rather than degrading the sound, a rare trait among speakers the reviewer has tested. More refined back-panel hardware, including anodized binding posts and jumper cables for optional bi-amping. Responds well to EQ correction (verified using measurement software and a miniDSP), letting the on-axis response be made genuinely linear. Measured bass extension of 70Hz (-3dB), with a measured sensitivity of 86dB.
Cons: On-axis, the treble runs notably hot - even hotter than the original RP-600M in some respects - and needs about 20° of toe-out or the grille installed to sound balanced. Horizontal dispersion is very slightly less linear across angles than the original RP-600M, a minor trade-off for the wider overall radiation pattern. Klipsch’s marketed sensitivity (about 94.5dB) is, like the original, a half-space rating roughly 9dB above the anechoic reality (closer to 85-86dB). In-room bass rolls off around 60Hz in practice, and a 120Hz boost paired with a midrange scoop gives kick drums their “tambour” without real low-end weight - a subwoofer is still recommended. Vertical listening tolerance is limited to about ±10° from the tweeter axis. Toeing the speaker out for better on-axis tonality (rather than using the grille) introduces slightly more diffuse imaging from added sidewall reflections.
Full Klipsch RP-600M II review and specifications →
| Bass Extension (-10dB) | 41Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 70Hz (measured, Erin's Audio Corner) |
| Dimensions | 15.7"H x 8"W x 12.5"D (398.8 x 203.2 x 317.5 mm) |
| Drivers | 6.5" Cerametallic cone woofer, 1" titanium LTS vented tweeter with Tractrix horn |
| Impedance | 8 ohms nominal (3.5 ohms minimum above 80Hz, measured by Erin's Audio Corner) |
| Sensitivity | 86dB (measured, Erin's Audio Corner) |
| Spinorama Preference Score | 4.75 |
| Spinorama Preference Score with Perfect Sub | 6.88 |
| Weight | 13 lbs (5.9 kg) each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: The Truth about Klipsch’s “NEW” Sound. RP-600M Update. More from Erin’s Audio Corner →
- Erin’s Audio Corner Website Klipsch RP-600M II
- GR-Research: We Bought The "NEW" RP-600M II Is KLIPSCH Listening?! More from GR-Research →
- Erin’s Audio Corner: 5 AWESOME SPEAKERS Under $1000 You Won’t Regret
- Erin’s Audio Corner Measurements (spinorama.org)
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StarkSound Beta 5: $499 per pair eBay
Pros: Impressive bass extension for the price - F3 at 52Hz, F10 at 37Hz, reaching down to 40-50Hz in-room with solid kick-drum impact. Good harmonic distortion control at both moderate and loud listening levels. Solid build with a thick polycarbonate baffle meant to reduce cabinet resonance. Measured bass extension of 52Hz (-3dB), with a measured sensitivity of 83dB.
Cons: Sensitivity undershoots its own spec - rated 86dB, measured closer to 83dB. A resonance artifact shows up independently in the on-axis response, burst decay, and impedance measurements, hurting directivity. Multitone distortion spikes to about 10% in the 800Hz-1kHz range, tied to woofer excursion - a subwoofer crossover helps. Needs to sit close to the wall (about 10 inches) or be EQ’d if placed further out, since the midrange sounds thin and the treble boosted otherwise.
Full StarkSound Beta 5 review and specifications →
| Bass Extension (-10dB) | 37Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 52Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 2200Hz |
| Dimensions | 11.9" x 7.2" x 13" (302 x 182 x 330 mm) |
| Drivers | 1.15" tweeter, 5.25" dry-carbon woofer |
| Frequency Response | 45Hz - 23kHz (-3dB, Manufacturer specified) |
| Impedance | 4 ohms nominal |
| Maximum SPL | 108dB (1m, Manufacturer specified) |
| Recommended Power | 30W - 150W |
| Sensitivity | 83dB (2.83V/1m, measured by Erin's Audio Corner) |
| Weight | 15 lbs (6.8 kg) |
| Woofer Cabinet | Bass reflex, rear ported |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons