Short answer: the Dynaudio Heritage Special on measured sound quality, the XTZ Spirit 4 on price. The Dynaudio Heritage Special ranks #29 of 222 bookshelf speakers, rated 4.4/5, at $7,000. The XTZ Spirit 4 ranks #159, rated 3.4/5, at $477, $6,523 cheaper.
Why pick the XTZ Spirit 4: Stand-mount speakers with a waveguide tweeter, adjustable treble and port tuning, wide coverage and fairly deep bass. Watch for: The third-party measurement is low confidence.
The Dynaudio Heritage Special is the better-sounding choice. A limited edition bookshelf speaker with huge output for its size, robust bass, and a big, well proportioned soundstage. The catch: At lower listening volumes, dynamic range and kick-drum punch fell short of higher-sensitivity speakers the reviewer has tested (JBL 4367, KEF Reference 1 Meta): the sheer output ceiling is impressive, but it isn’t a highly dynamic-sounding speaker at modest levels.
Buy the XTZ Spirit 4 if the price is the priority over sound quality, or the Dynaudio Heritage Special if sound quality is the priority over 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.
A limited edition bookshelf speaker with huge output for its size, robust bass, and a big, well proportioned soundstage.
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 | Dynaudio Heritage Special | |
|---|---|---|
| Price | $477 per pair | $7,000 per pair |
| Ranked | #159 of 222 in Large Size Bookshelf Speakers | #29 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | about 40.0Hz (measured, Spinorama data) | 38Hz (measured, Erin’s Audio Corner) |
| Enclosure | 2-way passive, rear-ported | - |
| Drivers | 1” dome tweeter, 6.5” woofer | 18cm MSP cone woofer, 28mm Esotar 3 dome tweeter |
| Dimensions | 13.8H x 7.5W x 10.6D in | 15.2”H x 8.2”W x 12.6”D (385 x 208 x 320 mm) |
| Weight | 17.9 lbs (8.1 kg) each | 24.3 lbs (11 kg) each |
| Sensitivity | 86dB | 85dB (measured at 2.83V/1m, Erin’s Audio Corner) |
| Impedance | 4 ohms | 5.1 ohms minimum, ported mode (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.18 | 4.32 |
| Spinorama Preference Score with Perfect Sub | 6.30 | 6.33 |
| Bass Extension (-3dB) | 42Hz (manufacturer specified) | 52Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No | No |
| Country | - | Denmark |
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