Short answer: the GR-Research NX-Treme, if you can house it. It ranks #2 of 228 and it can radiate in all directions with no internal reflections for a huge soundstage. But it is very tall and needs a GR-Research open baffle subwoofer on each side, while the MoFi SourcePoint 888 is a three-way vented design crossed at about 130Hz for $5,495 against $9,662.
Buy the GR-Research NX-Treme when sound quality outweighs the price for you, and the MoFi SourcePoint 888 when the price outweighs sound quality instead.
Want more options? Browse the full Passive Home rankings.
Prices on this page were last checked November 7, 2026 at 7:34 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| GR-Research NX-Treme | MoFi SourcePoint 888 | |
|---|---|---|
| Price | $9662 per pair for the kit with subs (assembly required) | $5495 per pair |
| Ranked | #2 of 228 in Large Size Floorstanding Speakers | #8 of 228 in Large Size Floorstanding Speakers |
| Bass Extension (-3dB) | <20Hz (With GR-Research open baffle subwoofers) | 34Hz (measured, Erin’s Audio Corner) |
| Dimensions | 85”H x 17”W x 20”D (2159 x 431.8 x 508 mm) (plus a subwoofer on each side) | 41.2”H x 12.6”W x 16.1”D (1046.5 x 320 x 408.9 mm) |
| Impedance | 8 ohms | 6 ohms nominal, 5 ohms minimum (measured, Erin’s Audio Corner) |
| Drivers | Eight 6.5” M165 open baffle woofer, Two 6.5” M165NQ open baffle midrange, GR Neo 3 Magnetic planar open baffle tweeter; Three 12-inch Rythmik Audio servo-controlled subwoofers; Three 12-inch Rythmik Audio servo-controlled subwoofers; Three 12-inch Rythmik Audio servo-controlled subwoofers; Three 12-inch Rythmik Audio servo-controlled subwoofers | Dual 8” paper cone woofers, 8” Paper Cone midrange, 1.25” wide roll soft dome tweeter |
| Sensitivity | 94.5dB | 85.6dB (measured, Erin’s Audio Corner) |
| Woofer Cabinet | open baffle | ported, rear |
| Weight | (35.3 lbs (16 kg)) | 94.8 lbs (43 kg) each |
| DIY Kit | Yes | No |
| Bass Extension (-10dB) | - | 26Hz (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | - | 6.09 |
| Spinorama Preference Score with Perfect Sub | - | 7.21 |
Related Speaker Comparisons
More top alternatives to GR-Research NX-Treme: