Short answer: the Selah Audio Purezza. It ranks #30 of 130 bookshelf speakers by sound quality; the Klipsch RP-600M II ranks #74.
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 Selah Audio Purezza offers: Premium two-way built around Purifi’s exceptionally linear 6.5-inch woofer and a tall RAAL ribbon. Erin measured about 85dB/2.83V/1m sensitivity, a 4.7-ohm minimum and the lowest midrange nonlinear distortion he had measured at the time. It reached roughly 103dB at 1m with little audible strain; horizontal response is smooth and broad, and Erin’s 200Hz low shelf (+3.5dB, Q 0.7) flattened the lower-mid/bass balance effectively. Watch for: The ribbon’s tall aperture creates deliberately narrow vertical radiation (roughly 20-30 degrees around 7kHz), so stand height and listening elevation are critical. Erin found a directivity change around 1-2kHz, a feature near 4kHz, and insufficient baffle-step compensation below 200-300Hz in his sample. The 4.7-ohm minimum and modest sensitivity favor a separate amplifier. A subwoofer crossed near 80Hz is recommended for distance and output.
Buy the Klipsch RP-600M II if the price matters more than sound quality. Buy the Selah Audio Purezza if sound quality matters more than the price.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Klipsch RP-600M II | Selah Audio Purezza | |
|---|---|---|
| Price | $449.99 per pair | $2,950 per pair |
| Ranked | #74 of 130 in Large Size Bookshelf Speakers | #30 of 130 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 41Hz (measured, Erin's Audio Corner) | 34.9Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 70Hz (measured, Erin's Audio Corner) | 86.0Hz (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) | - |
| Impedance | 8 ohms nominal (3.5 ohms minimum above 80Hz, measured by Erin's Audio Corner) | 4.7 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 86dB (measured, Erin's Audio Corner) | Approximately 85dB/2.83V/1m (measured, Erin's Audio Corner) |
| Drivers | 6.5" Cerametallic cone woofer, 1" titanium LTS vented tweeter with Tractrix horn | RAAL ribbon tweeter; 6.5" Purifi woofer |
| Weight | 13 lbs (5.9 kg) each | - |
| Woofer Cabinet | ported | ported |
| Spinorama Preference Score | 4.75 | - |
| Spinorama Preference Score with Perfect Sub | 6.88 | - |
| Bass Extension | - | Subwoofer crossover near 80Hz recommended by Erin's Audio Corner |
| Maximum SPL | - | Approximately 103dB at 1m (measured, Erin's Audio Corner) (manufacturer specified) |
Related Speaker Comparisons
How Selah Audio Purezza compares with other leading options:
- Selah Audio Purezza vs Revel M126Be
- Selah Audio Purezza vs ELAC VELA BS 403
- Selah Audio Purezza vs Philharmonic BMR (v1)
- ELAC Debut 3.0 DB63 vs Selah Audio Purezza
- Selah Audio Purezza vs JTR Noesis 210HT
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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)
- Head-to-Head Comparisons
- Klipsch RP-600M II vs Dynaudio Emit 20
- Klipsch RP-600M II vs Philharmonic BMR Monitor
- Klipsch RP-600M II vs JBL Studio 630
- Klipsch RP-600M II vs Behringer B2030P
- Klipsch RP-600M II vs Ascend CBM-170 SE2
- Klipsch RP-600M II vs Infinity Reference R162
- Klipsch RP-600M II vs GR-Research X-LS Encore
- Klipsch RP-600M II vs Infinity IL10
- See all 72 comparisons
Selah Audio Purezza: $2,950 per pair Selah Audio eBay
Pros: Premium two-way built around Purifi’s exceptionally linear 6.5-inch woofer and a tall RAAL ribbon. Erin measured about 85dB/2.83V/1m sensitivity, a 4.7-ohm minimum and the lowest midrange nonlinear distortion he had measured at the time. It reached roughly 103dB at 1m with little audible strain; horizontal response is smooth and broad, and Erin’s 200Hz low shelf (+3.5dB, Q 0.7) flattened the lower-mid/bass balance effectively. Measured bass extension of 86.0Hz (-3dB), with a measured sensitivity of 85dB.
Cons: The ribbon’s tall aperture creates deliberately narrow vertical radiation (roughly 20-30 degrees around 7kHz), so stand height and listening elevation are critical. Erin found a directivity change around 1-2kHz, a feature near 4kHz, and insufficient baffle-step compensation below 200-300Hz in his sample. The 4.7-ohm minimum and modest sensitivity favor a separate amplifier. A subwoofer crossed near 80Hz is recommended for distance and output.
Full Selah Audio Purezza review and specifications →
| Bass Extension | Subwoofer crossover near 80Hz recommended by Erin's Audio Corner |
|---|---|
| Bass Extension (-10dB) | 34.9Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 86.0Hz (measured, Erin's Audio Corner) |
| Drivers | RAAL ribbon tweeter; 6.5" Purifi woofer |
| Impedance | 4.7 ohms minimum (measured, Erin's Audio Corner) |
| Maximum SPL | Approximately 103dB at 1m (measured, Erin's Audio Corner) (manufacturer specified) |
| Sensitivity | Approximately 85dB/2.83V/1m (measured, Erin's Audio Corner) |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons