Short answer: the KEF R3 for better sound quality, the Klipsch RP-600M II for the lower price. The KEF R3 ranks #15 of 223 bookshelf speakers, rated 4.5/5, at $1,544.56. The Klipsch RP-600M II ranks #124, rated 3.7/5, at $449.99, $1,094.57 cheaper.
What the Klipsch RP-600M II does well: Bookshelf speakers with a large horn tweeter, wide soundstage, high efficiency and bi-amp ready terminals. The tradeoff: On-axis, the treble runs notably hot (even hotter than the original Klipsch RP-600M in some respects) and needs about 20° of toe-out or the grille installed to sound balanced.
The KEF R3 is the more accurate, deeper-bass choice. A three way bookshelf speaker with KEF’s coaxial driver for stable imaging across seats and very low distortion, easy to run with a modest amp. Its measured preference score, a predictor of how neutral it sounds, is 6.20 against 5.64 for the Klipsch RP-600M II. Its bass reaches about 58Hz before falling 3dB, against 70Hz for the Klipsch RP-600M II. The catch: The low-frequency alignment rolls gradually rather than delivering high-output sub-bass; KEF specifies 58Hz +/-3dB and Erin’s high-level data supports using an 80Hz subwoofer crossover.
Buy the Klipsch RP-600M II if the price matters more than sound quality. Buy the KEF R3 if sound quality matters more than the price.
Want more options? Browse the full Passive Home rankings.
Bookshelf speakers with a large horn tweeter, wide soundstage, high efficiency and bi-amp ready terminals.
A three way bookshelf speaker with KEF’s coaxial driver for stable imaging across seats and very low distortion, easy to run with a modest amp.
Prices on this page were last checked October 29, 2026 at 4:42 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Klipsch RP-600M II | KEF R3 | |
|---|---|---|
| Price | $449.99 per pair | $1,544.56 per pair |
| Ranked | #124 of 223 in Large Size Bookshelf Speakers | #15 of 223 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 41Hz (measured, Erin’s Audio Corner) | 35.2Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 70Hz (measured, Erin’s Audio Corner) | Approximately 58Hz (manufacturer specified; consistent with Erin’s measured roll-off) |
| Dimensions | 15.7”H x 8”W x 12.5”D (398.8 x 203.2 x 317.5 mm) | 16.6”H x 7.9”W x 13.2”D |
| Impedance | 8 ohms nominal (3.5 ohms minimum above 80Hz, measured by Erin’s Audio Corner) | 8 ohms nominal; suitable for Erin’s 4/8-ohm-rated amplifier |
| Sensitivity | 86dB (measured, Erin’s Audio Corner) | Approximately 86-87dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Drivers | 6.5” Cerametallic cone woofer, 1” titanium LTS vented tweeter with Tractrix horn | 1” tweeter coaxial with 5” midrange; 6.5” woofer |
| Weight | 13 lbs (5.9 kg) each | 29.9 lbs (13.55 kg) each |
| Woofer Cabinet | ported | ported, rear Flexible Port |
| Spinorama Preference Score | 5.64 | 6.2 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.77 | 7.97 (spinorama.org) |
| DIY Kit | No | No |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared. The two were measured by different sources, so small differences, especially in the bass, can come from the measurement setup rather than the speakers.
Measurement data: Klipsch RP-600M II (measured by Erin’s Audio Corner) and KEF R3 (measured by Audio Science Review), via spinorama.org.
Related Speaker Comparisons
More top alternatives to KEF R3: