Short answer: the Mission LX-3 MKII. It ranks #80 of 130 bookshelf speakers by sound quality; the Triangle Borea BR03 ranks #109.
What the Triangle Borea BR03 offers: Bass output is genuinely decent for the price - measured extension reaches F3 57Hz/F10 42Hz, which the reviewer had no real complaints about. Dual front-firing ports and a well-stuffed, well-braced cabinet. Solid build quality overall. Watch for: A noticeable mid-range suckout, most pronounced in the upper mid-range/lower treble, that the reviewer attributes to cabinet resonances and driver breakup rather than a deliberate voicing choice - it makes vocals and instruments sound recessed and thin rather than warm. Sibilance in the 4-8kHz region shows up on every track the reviewer tried. Measured minimum impedance dips to about 4.2 ohms (with an even lower EPDR), despite the speaker and its own rear panel being labeled 8 ohms - worth knowing if you’re planning to drive these with a receiver/AVR that assumes an 8-ohm nominal load. The reviewer is upfront that this speaker has a devoted following among other reviewers, but says he specifically doesn’t hear what they hear and wants people who own it to trust their own ears rather than assume something’s wrong with their hearing if they don’t love it either.
What the Mission LX-3 MKII offers: A large affordable standmount with a 6.5-inch woofer, 88dB rated sensitivity and useful bass. ASR measured 48Hz estimated in-room extension, a controlled Q of 0.60, a 5.52 subwoofer-assisted preference score and reasonable +/-55-degree horizontal coverage. Watch for: On-axis smoothness of 0.217 and predicted in-room smoothness of 0.344 reveal clear response unevenness, with a -0.46dB-per-octave downward tilt. The 345mm-tall, 8.4kg cabinet is bulky and current US availability is limited.
Buy the Triangle Borea BR03 if the price is the priority over sound quality, or the Mission LX-3 MKII if sound quality is the priority over the price.
Skip the Triangle Borea BR03 if sound quality matters to you. It ranks near the bottom of the 130 bookshelf speakers.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Triangle Borea BR03 | Mission LX-3 MKII | |
|---|---|---|
| Price | $399.00 per pair | £249 per pair |
| Ranked | #109 of 130 in Large Size Bookshelf Speakers | #80 of 130 in Large Size Bookshelf Speakers |
| Drivers | 6.5" natural cellulose midwoofer, 1" (25mm) EFS silk dome tweeter | 1" microfiber-dome tweeter, 6.5" composite-fiber woofer |
| Crossover Frequency | 3600Hz | - |
| Dimensions | 14.96"H x 8.11"W x 12.36"D | 13.6H x 8.9W x 12.1D in |
| Weight | 13.2 lbs (6 kg) each | 18.5 lbs (8.4 kg) each |
| Impedance | 8 ohms nominal (manufacturer spec), 4.2 ohms minimum (measured, Erin's Audio Corner) | 8 ohms nominal, 4.1 ohms minimum |
| Sensitivity | 87.5dB (measured at 2.83V/1m, Erin's Audio Corner) | 88dB |
| Bass Extension (-3dB) | 57Hz (measured, Erin's Audio Corner) | - |
| Bass Extension (-10dB) | 42Hz (measured, Erin's Audio Corner) | - |
| Recommended Power | 100W | - |
| Woofer Cabinet | ported, dual front ports | - |
| Spinorama Preference Score | 3.12 | 3.26 |
| Spinorama Preference Score with Perfect Sub | 5.47 | 5.52 |
| Enclosure | - | 2-way, bass-reflex |
| Country | - | United Kingdom (design) |
Related Speaker Comparisons
More worthwhile head-to-heads for Mission LX-3 MKII:
- Perlisten S4b vs Mission LX-3 MKII
- KEF Reference 1 Meta vs Mission LX-3 MKII
- GR-Research NX-Studio vs Mission LX-3 MKII
- AsciLab C6B vs Mission LX-3 MKII
- Audio First Cadentia 3 vs Mission LX-3 MKII
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
Triangle Borea BR03: $399.00 per pair Amazon eBay
Pros: Bass output is genuinely decent for the price - measured extension reaches F3 57Hz/F10 42Hz, which the reviewer had no real complaints about. Dual front-firing ports and a well-stuffed, well-braced cabinet. Solid build quality overall. Measured bass extension of 57Hz (-3dB), with a measured sensitivity of 87.5dB.
Cons: A noticeable mid-range suckout, most pronounced in the upper mid-range/lower treble, that the reviewer attributes to cabinet resonances and driver breakup rather than a deliberate voicing choice - it makes vocals and instruments sound recessed and thin rather than warm. Sibilance in the 4-8kHz region shows up on every track the reviewer tried. Measured minimum impedance dips to about 4.2 ohms (with an even lower EPDR), despite the speaker and its own rear panel being labeled 8 ohms - worth knowing if you’re planning to drive these with a receiver/AVR that assumes an 8-ohm nominal load. The reviewer is upfront that this speaker has a devoted following among other reviewers, but says he specifically doesn’t hear what they hear and wants people who own it to trust their own ears rather than assume something’s wrong with their hearing if they don’t love it either.
Full Triangle Borea BR03 review and specifications →
| Bass Extension (-10dB) | 42Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 57Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 3600Hz |
| Dimensions | 14.96"H x 8.11"W x 12.36"D |
| Drivers | 6.5" natural cellulose midwoofer, 1" (25mm) EFS silk dome tweeter |
| Impedance | 8 ohms nominal (manufacturer spec), 4.2 ohms minimum (measured, Erin's Audio Corner) |
| Recommended Power | 100W |
| Sensitivity | 87.5dB (measured at 2.83V/1m, Erin's Audio Corner) |
| Spinorama Preference Score | 3.12 |
| Spinorama Preference Score with Perfect Sub | 5.47 |
| Weight | 13.2 lbs (6 kg) each |
| Woofer Cabinet | ported, dual front ports |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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Mission LX-3 MKII: £249 per pair Richer Sounds eBay
Pros: A large affordable standmount with a 6.5-inch woofer, 88dB rated sensitivity and useful bass. ASR measured 48Hz estimated in-room extension, a controlled Q of 0.60, a 5.52 subwoofer-assisted preference score and reasonable +/-55-degree horizontal coverage.
Cons: On-axis smoothness of 0.217 and predicted in-room smoothness of 0.344 reveal clear response unevenness, with a -0.46dB-per-octave downward tilt. The 345mm-tall, 8.4kg cabinet is bulky and current US availability is limited.
Full Mission LX-3 MKII review and specifications →
| Country | United Kingdom (design) |
|---|---|
| Dimensions | 13.6H x 8.9W x 12.1D in |
| Drivers | 1" microfiber-dome tweeter, 6.5" composite-fiber woofer |
| Enclosure | 2-way, bass-reflex |
| Impedance | 8 ohms nominal, 4.1 ohms minimum |
| Sensitivity | 88dB |
| Spinorama Preference Score | 3.26 |
| Spinorama Preference Score with Perfect Sub | 5.52 |
| Weight | 18.5 lbs (8.4 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Mission LX-3 MKII vs GR-Research X-LS Encore
- Mission LX-3 MKII vs Philharmonic BMR Monitor
- Mission LX-3 MKII vs Dynaudio Emit 20
- Mission LX-3 MKII vs Klipsch RP-600M II
- Mission LX-3 MKII vs Dynaudio Special Forty
- Mission LX-3 MKII vs ELAC Debut 2.0 B6.2
- Mission LX-3 MKII vs SVS Prime Bookshelf
- Mission LX-3 MKII vs KEF Q3 Meta
- See all 44 comparisons