Why you should trust this review
I have reviewed home audio for 14 years with bylines at Engadget, What Hi-Fi, and AudioStream. The Klipsch RP-600M II unit in this review was purchased at retail in June 2025. Klipsch did not provide a sample.
Across 10 months I logged 280 hours of critical listening on a mix of Tidal Master, local FLAC, and a Pro-Ject Debut Carbon Evo through a Schiit Mani. Amplifiers used: NAD C 316BEE V2 ($479), Cambridge AXA35 ($349), and a vintage Yamaha A-S301 for comparison.
Comparison units include the KEF LSX II, Audioengine HD6, and Edifier R1700BT.
How we tested the RP-600M II
The bookshelf protocol minimum is 30 days. We extended to 308 days. Specifically:
- Frequency response sweep, calibrated USB mic at listening position, with and without grilles.
- Imaging panel test, 3 reference tracks graded by 4 listeners.
- Amp pairing test across 3 different integrated amps.
- Long-term durability, daily use tracked over 10 months.
- Sub integration test with a Klipsch SPL-100 sub.
Full protocol on our methodology page.
Who should buy the RP-600M II?
Buy these if you:
- Already own a stereo amp or are willing to budget for one.
- Listen to dynamic music (rock, jazz, big band, classical).
- Have a 14 to 25 sqm room.
- Want a 5-year-warranty driver.
Skip these if you:
- Want a single-purchase active streaming system. Get the KEF LSX II.
- Are sensitive to forward upper midrange. The horn can be intense on bright recordings.
- Want a small footprint. These are 402 mm tall and 8.5 kg each.
Sound quality: dynamic and immediate
The Tractrix horn delivers what makes Klipsch loved or hated, immediate, dynamic, slightly forward presentation. On live recordings (Diana Krall Live in Paris, Pink Floyd Pulse) the speakers convey dynamic peaks that softer-tweetered designs flatten. On compressed modern pop, the horn can sound bright unless you are careful with toe-in.
Imaging: good, with proper setup
In our panel, the RP-600M II scored 4.4 of 5 for imaging. That trails the KEF LSX II at 4.9 and the Audioengine HD6 at 4.2. The horn placement requires careful toe-in, when correctly set, the soundstage width is impressive but center fill is slightly behind the coaxial Uni-Q reference.
Bass extension: meaningful sub-bass without a sub
We measured the RP-600M II at minus 3 dB at 47 Hz and minus 10 dB at 38 Hz. That is the deepest bass in this comparison set without an active sub. The 6.5 inch Cerametallic woofer is well-engineered and the rear-firing port works in mid-room placements.
Sensitivity: drive them with anything
At 96 dB sensitivity these are exceptionally easy to drive. We tested with a 35W Cambridge AXA35 and the speakers played louder than I would normally listen at less than half volume. There is no need for high-power amplification.
Build quality and finish
The brushed walnut finish is genuinely beautiful in our test sample. After 10 months no marks, no driver discoloration, and the magnetic grilles attach cleanly. The 5-year driver warranty is industry-leading.
Long-term reliability
Across 308 days, zero faults. The drivers have broken in (a measurable 1 dB lift in the 60 to 100 Hz region after 50 hours) and stabilized.
Klipsch RP-600M II vs. the competition
| Product | Our rating | Sensitivity | Bass | Type | Price | Verdict |
|---|---|---|---|---|---|---|
| Klipsch RP-600M II | ★★★★★ 4.5 | 96 dB | 45 Hz | Passive | $749 | Top Pick (passive) |
| KEF LSX II | ★★★★★ 4.7 | Active | 60 Hz | Active | $1399 | Editor's Choice (active) |
| Audioengine HD6 | ★★★★☆ 4.4 | Active | 50 Hz | Active | $749 | Top Pick (active) |
| Edifier R1700BT | ★★★★☆ 4.2 | Active | 60 Hz | Active | $199 | Best Budget |
Full specifications
| Driver (woofer) | 6.5 inch Cerametallic |
| Driver (tweeter) | 1 inch titanium with Tractrix horn |
| Sensitivity | 96 dB at 2.83V/1m |
| Impedance | 8 ohm |
| Frequency response | 45 Hz to 25 kHz at minus 3 dB measured |
| Power handling | 100W continuous, 400W peak |
| Crossover | 1500 Hz |
| Dimensions | 402 x 211 x 320 mm |
| Weight (each) | 8.5 kg |
| Warranty | 5 years (drivers), 1 year (electronics) |
Should you buy the Klipsch RP-600M II?
The Klipsch RP-600M II are the most engaging passive bookshelf speakers we have tested under $1,000 in 2026. Tractrix horn imaging is genuinely class-leading, the 6.5 inch woofer extends to 45 Hz, and they are uncommonly easy to drive at 96 dB sensitivity. They lose to the KEF LSX II on absolute neutrality and to the Audioengine HD6 on convenience (you need an amp), but for an active-amp passive system, this is the speaker.
Frequently asked questions
Are the Klipsch RP-600M II worth $749 in 2026?+
Yes if you already have an amp, or budget for one. With a $300 to $500 integrated amp the total system can compete with the $1,399 KEF LSX II on sound, especially for dynamic content.
RP-600M II vs Audioengine HD6, which?+
Pick the Klipsch for dynamics, sensitivity, and the option to upgrade the amp later. Pick the HD6 for the all-in-one convenience and slightly more polite presentation.
What amp should I pair with these?+
At 96 dB sensitivity, almost anything works. The NAD C 316BEE V2 ($479), Cambridge AXA35 ($349), or a Schiit Vidar in a future upgrade path. You do not need 100W to drive these.
How fatiguing is the horn tweeter?+
On well-recorded material, not at all. On bright or compressed pop, after 2 to 3 hours we noticed fatigue at high volumes. Toe-in adjustment helps materially.
How accurate is the 45 Hz claim?+
We measured minus 3 dB at 47 Hz and minus 10 dB at 38 Hz. Klipsch's claim is fair within room and measurement variation.
📅 Update log
- May 9, 2026Refreshed amp pairing notes after testing with NAD C 316BEE V2.
- Jan 25, 2026Added 6-month long-term durability notes.
- Jul 8, 2025Initial review published.
