Short answer: the Cambridge Audio L/R X. It ranks #76 of 118 powered bookshelf speakers by sound quality, rated 4.1/5, at $2,399; the Focal ST6 Twin6 ranks #107, rated 3.8/5, and costs $4,260, so there is not much of a tradeoff to weigh.
Why pick the Cambridge Audio L/R X: A 2.5-way active design with a 28mm aluminum tweeter, a front-facing 5-inch mid-woofer, a second 5-inch woofer at the base whose passband overlaps the first (the source of the “.5”), and dual 6-inch side-firing passive radiators per speaker. Watch for: On-axis response is less linear than the L/R S, with dips in the bass, a peak around 1-2kHz, and a dip spanning the upper mid-range into the lower treble; Cambridge confirmed the dip is a deliberate DSP notch for a tweeter breakup resonance rather than a driver flaw, but it was audible as a mild suck-out in an AB pink-noise comparison.
What the Focal ST6 Twin6 does well: The ST6 update of the Twin6 keeps the dual 6.5 inch W-cone woofers and inverted beryllium dome tweeter, now on an optimized baffle for better dispersion control. The catch: No independent measurements yet, so its tonal balance and directivity can’t be compared directly with measured speakers; the rating is estimated from the measured Focal Twin6 Be, which spanned 2.9dB from 300Hz to 5kHz with uneven off-axis response and reached 48.3Hz (-3dB).
Buy the Cambridge Audio L/R X. It is rated higher for sound quality than the Focal ST6 Twin6 and costs less, which makes it the one to get unless you need something the other one does better.
Worth knowing: the Focal ST6 Twin6 has not been measured yet. Its rating is estimated from related models, with a likely range of 3.6 to 4.0, so treat this verdict as provisional.
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Specifications Side By Side
| Cambridge Audio L/R X | Focal ST6 Twin6 | |
|---|---|---|
| Price | $2,399.00 per pair | $4,260 per pair |
| Ranked | #76 of 118 in Large Size Powered Bookshelf Speakers | #107 of 118 in Large Size Powered Bookshelf Speakers Estimated |
| Bass Extension (-3dB) | 43Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) | - |
| Drivers | 28mm aluminum tweeter, 2x 5” mid-woofers, 2x 6” side-firing passive radiators | 1” inverted beryllium dome tweeter; dual 6.5” W-cone woofers |
| Frequency Response | 35Hz - 24kHz (±3dB, manufacturer specified) | 40Hz - 40kHz (manufacturer specified); 110Hz - 10kHz in Focus mode |
| Amplifier Power | 800W total (400W per speaker) | 50W HF (class AB) + 2x 70W LF/MF (class G) |
| Inputs | HDMI eARC, RCA aux, RCA phono (MM), optical digital, USB-C, USB-A, Ethernet, Wi-Fi | Balanced XLR |
| Bluetooth Codecs | SBC, AAC | - |
| App | Yes | - |
| DSP | Yes, room size, wall distance, and reflective surface correction | - |
| Dimensions | 7.9” (200 mm) W x 330mm H x 260mm D (each) | 9.8”H x 19.7”W x 13.4”D (250 x 500 x 340 mm) |
| Weight | 22.9 lbs (10.4kg) each | 48.5 lbs (22 kg) |
| Subwoofer Output | Yes | - |
| Outputs | Subwoofer | - |
| XLR Input | No | Yes |
| RCA Input | Yes | No |
| TRS Input | No | No |
| Optical Input | Yes | No |
| Coaxial Input | No | No |
| USB Input | Yes | No |
| HDMI Input | Yes | No |
| AES Input | No | No |
| Aux Input | No | No |
| Bluetooth | Yes | No |
| Maximum SPL | - | 112dB peak @ 1m (manufacturer specified) |
Related Speaker Comparisons
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- Cambridge Audio L/R X vs Neumann KH 150
- Cambridge Audio L/R X vs Buchardt A10
- Neumann KH 310 A vs Cambridge Audio L/R X
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
Cambridge Audio L/R X: $2,399.00 per pair Amazon eBay
Same family: the Cambridge Audio L/R S (smaller bookshelf, rated 4.4/5) and the Cambridge Audio L/R M (smaller bookshelf, estimated 4.2/5).
Pros: A 2.5-way active design with a 28mm aluminum tweeter, a front-facing 5-inch mid-woofer, a second 5-inch woofer at the base whose passband overlaps the first (the source of the “.5”), and dual 6-inch side-firing passive radiators per speaker. Erin’s Audio Corner measured wide, even horizontal dispersion (a broad flare out to about the -6dB point around 1.5 to 3kHz) and deeper extension than the smaller L/R S, with an F3 of about 43Hz and F10 of about 37Hz. In-app DSP for room size, speaker distance from the front wall, and reflective surface type gave an audible change in bass tightness in testing. Connectivity covers HDMI eARC, RCA aux, a moving-magnet phono input, optical digital, USB-C, USB-A, Wi-Fi streaming, and a subwoofer output, making it a full living-room hub rather than just a stereo pair. Measured bass extension of 43Hz (-3dB).
Cons: On-axis response is less linear than the L/R S, with dips in the bass, a peak around 1-2kHz, and a dip spanning the upper mid-range into the lower treble; Cambridge confirmed the dip is a deliberate DSP notch for a tweeter breakup resonance rather than a driver flaw, but it was audible as a mild suck-out in an AB pink-noise comparison. Vertical dispersion is narrower and asymmetric than the L/R S, at about plus 20 to minus 10 degrees, because the greater distance between the tweeter and mid-woofer creates more lobing, so listening height and stand placement matter more. Multitone distortion rides close to the 3% threshold at 96dB measured at 1 meter in the far field, limiting headroom for loud, wide-band material. Output falls off quickly below about 50Hz, so home-theater use with deep bass content benefits from an added subwoofer.
Full Cambridge Audio L/R X review and specifications →
| Released | Jul 2026 (3 months ago) |
|---|---|
| AES Input | No |
| Amplifier Power | 800W total (400W per speaker) |
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 43Hz (measured, Erin’s Audio Corner) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Coaxial Input | No |
| DSP | Yes, room size, wall distance, and reflective surface correction |
| Dimensions | 7.9” (200 mm) W x 330mm H x 260mm D (each) |
| Drivers | 28mm aluminum tweeter, 2x 5” mid-woofers, 2x 6” side-firing passive radiators |
| Frequency Response | 35Hz - 24kHz (±3dB, manufacturer specified) |
| HDMI Input | Yes |
| Inputs | HDMI eARC, RCA aux, RCA phono (MM), optical digital, USB-C, USB-A, Ethernet, Wi-Fi |
| Optical Input | Yes |
| Outputs | Subwoofer |
| RCA Input | Yes |
| Subwoofer Output | Yes |
| TRS Input | No |
| USB Input | Yes |
| Weight | 22.9 lbs (10.4kg) each |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Cambridge Audio L/R X vs Dynaudio Core 47
- Cambridge Audio L/R X vs JBL 4329P
- Cambridge Audio L/R X vs Barefoot Footprint 01
- Cambridge Audio L/R X vs Focal Alpha 65 EVO
- Cambridge Audio L/R X vs Fluid Audio Image 2
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Focal ST6 Twin6: $4,260 per pair Estimated Amazon B&H Photo Video eBay
Older model: the Focal Twin6 Be (ranked higher, rated 3.8/5). See every Focal Twin6, Solo6 and Trio6 generation.
Same family: the Focal Solo6 ST6 (smaller bookshelf, ranked higher, rated 4.3/5) and the Focal Trio6 ST6 (larger bookshelf, ranked higher, rated 4.2/5).
Pros: The ST6 update of the Twin6 keeps the dual 6.5 inch W-cone woofers and inverted beryllium dome tweeter, now on an optimized baffle for better dispersion control. Focus mode turns the woofers into a full range speaker (110Hz to 10kHz) for checking mixes on a small speaker, and bass, low-mid and treble controls plus a 45/60/90Hz high-pass filter help fit it to the room.
Cons: No independent measurements yet, so its tonal balance and directivity can’t be compared directly with measured speakers; the rating is estimated from the measured Focal Twin6 Be, which spanned 2.9dB from 300Hz to 5kHz with uneven off-axis response and reached 48.3Hz (-3dB). It is expensive at $2130 each, heavy at 22 kg, and has only an XLR input.
Full Focal ST6 Twin6 review and specifications →
| Released | 2022 (4 years ago) |
|---|---|
| AES Input | No |
| Amplifier Power | 50W HF (class AB) + 2x 70W LF/MF (class G) |
| Aux Input | No |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 9.8”H x 19.7”W x 13.4”D (250 x 500 x 340 mm) |
| Drivers | 1” inverted beryllium dome tweeter; dual 6.5” W-cone woofers |
| Frequency Response | 40Hz - 40kHz (manufacturer specified); 110Hz - 10kHz in Focus mode |
| HDMI Input | No |
| Inputs | Balanced XLR |
| Maximum SPL | 112dB peak @ 1m (manufacturer specified) |
| Optical Input | No |
| RCA Input | No |
| TRS Input | No |
| USB Input | No |
| Weight | 48.5 lbs (22 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons


