Short answer: the GR-Research NX-Studio for better sound quality, the Triangle Borea BR03 for the lower price. The GR-Research NX-Studio ranks #4 of 222 bookshelf speakers, rated 4.8/5, at $3,630. The Triangle Borea BR03 ranks #198, rated 2.8/5, at $399, $3,231 cheaper.
What the Triangle Borea BR03 does well: A budget French bookshelf speaker with dual front ports, decent bass for the price and solid, well braced build quality. 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.
The GR-Research NX-Studio is the better-sounding option. A DIY kit bookshelf speaker with a ribbon tweeter for wide open, detailed sound, superb imaging, and tight, fast sealed bass. The tradeoff: Bass will be very tight but won’t be quite as deep as others due to the sealed woofer enclosure.
Buy the Triangle Borea BR03 when the price outweighs sound quality for you, and the GR-Research NX-Studio when sound quality outweighs the price instead.
Looking for alternatives? See the complete Passive Home rankings.
A budget French bookshelf speaker with dual front ports, decent bass for the price and solid, well braced build quality.
A DIY kit bookshelf speaker with a ribbon tweeter for wide open, detailed sound, superb imaging, and tight, fast sealed bass.
Prices on this page were last checked October 31, 2026 at 7:11 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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Specifications Side By Side
| Triangle Borea BR03 | GR-Research NX-Studio | |
|---|---|---|
| Price | $399.00 per pair | $3630 per pair |
| Ranked | #198 of 222 in Large Size Bookshelf Speakers | #4 of 222 in Large Size Bookshelf Speakers |
| Drivers | 6.5” natural cellulose midwoofer, 1” (25mm) EFS silk dome tweeter | GR-Research M165NQ 6.5” paper cone, non-resonant polymer frame, copper shorting rings and aluminum phase plug sealed enclosure woofer, GR-Research Neo3 Planar Magnetic Ribbon open baffle tweeter |
| Crossover Frequency | 3600Hz | - |
| Dimensions | 14.96”H x 8.11”W x 12.36”D | 18”H x 8.5”W x 15.5”D (457.2 x 215.9 x 393.7 mm) |
| Weight | 13.2 lbs (6 kg) each | 20.5 lbs (9.3 kg) each |
| Impedance | 8 ohms nominal (manufacturer spec), 4.2 ohms minimum (measured, Erin’s Audio Corner) | 8 ohms |
| Sensitivity | 87.5dB (measured at 2.83V/1m, Erin’s Audio Corner) | 87dB |
| 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 | sealed |
| Spinorama Preference Score | 4.03 | - |
| Spinorama Preference Score with Perfect Sub | 6.38 | - |
| DIY Kit | No | Yes |
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