Short answer: the KEF Reference 1 Meta for better sound quality, the XTZ Spirit 4 for the lower price. The KEF Reference 1 Meta ranks #3 of 222 bookshelf speakers, rated 4.8/5, at $9,999.98. The XTZ Spirit 4 ranks #159, rated 3.4/5, at $477, $9,522.98 cheaper.
What the XTZ Spirit 4 does well: Stand-mount speakers with a waveguide tweeter, adjustable treble and port tuning, wide coverage and fairly deep bass. The tradeoff: The third-party measurement is low confidence.
The KEF Reference 1 Meta is the more accurate, deeper-bass pick. Extremely accurate bookshelf speakers, with a superb three dimensional soundstage, no harshness, and tightly matched pairs. Its measured preference score, a predictor of how neutral it sounds, is 6.48 against 4.18 for the XTZ Spirit 4. Its bass reaches about 32Hz before falling 10dB, against 40Hz for the XTZ Spirit 4. The catch: At roughly $10000/pair, nearly four times the cost of the similarly-sized KEF R3.
Buy the XTZ Spirit 4 if the price matters more than sound quality. Buy the KEF Reference 1 Meta if sound quality matters more than the price.
Looking for alternatives? See the complete Passive Home rankings.
Stand-mount speakers with a waveguide tweeter, adjustable treble and port tuning, wide coverage and fairly deep bass.
Extremely accurate bookshelf speakers, with a superb three dimensional soundstage, no harshness, and tightly matched pairs.
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
| XTZ Spirit 4 | KEF Reference 1 Meta | |
|---|---|---|
| Price | $477 per pair | $9999.98 per pair |
| Ranked | #159 of 222 in Large Size Bookshelf Speakers | #3 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | about 40.0Hz (measured, Spinorama data) | 32Hz (measured, Erin’s Audio Corner) |
| Enclosure | 2-way passive, rear-ported | - |
| Drivers | 1” dome tweeter, 6.5” woofer | 165 mm (6.5 in.) aluminium cone woofer, 125 mm (5 in.) aluminium cone midrange, 25 mm (1 in.) aluminium dome with MAT tweeter |
| Dimensions | 13.8H x 7.5W x 10.6D in | 17.3”H x 8.1”W x 16.6”D (439.4 x 205.7 x 421.6 mm) |
| Weight | 17.9 lbs (8.1 kg) each | 40.1 lbs (18.2 kg) each |
| Sensitivity | 86dB | 82.5dB (measured average, Erin’s Audio Corner) |
| Impedance | 4 ohms | 4 ohms nominal, 2.9 ohms minimum (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.18 | 6.48 |
| Spinorama Preference Score with Perfect Sub | 6.30 | 8.29 |
| Bass Extension (-3dB) | 42Hz (manufacturer specified) | 52Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported, rear |
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