Osaki Platinum Solis Duo 4D+ vs Osaki 4D Emperor II
Osaki Platinum Solis Duo 4D+ and Osaki 4D Emperor II finish level on our weighted scoring, so the decision here is about fit rather than ranking. Osaki 4D Emperor II costs $7,500 less — about 63% — so the question is whether what Osaki Platinum Solis Duo 4D+ adds is worth that to you. They separate most on price (Osaki 4D Emperor II), track and rollers — those are the rows worth reading closely. In short: Osaki Platinum Solis Duo 4D+ for buyers who want Osaki's most capable mechanism and stretch recline, regardless of price; Osaki 4D Emperor II for shoppers who want flagship 4D specs at a mid-range street price.
| 2 products |  Osaki Osaki 4D Emperor II | |
|---|---|---|
| Price | $11,999 | $4,499 |
| Overall score | 8.7 | 8.7 |
| Track | Flexible track system (SL-based, reclines to 190°) | 53.15" SL-track, neck to upper glutes |
| Rollers | Dual 4D mechanisms (2 separate mech controllers) | 4D mechanism (adjustable intensity, speed, width, depth) |
| Zero gravity | Yes (zero gravity reclining) | Yes, 3-stage zero gravity reclining |
| Heat | Lumbar graphene heating (~75–83°F) | Infrared-heated back rollers + carbon fiber calf heating |
| Auto programs | 18 auto programs + 5 manual styles | 16 auto programs + 6 manual styles |
| Max user height (in) | — | — |
| Warranty (yr) | 5 years (3 years full service + 2 years parts) | 5 years (3 years full service + 2 years parts, incl. free extension promo) |
| Reclined length | 30" W × 63" L × 48.4" H upright (81" L reclined); 10" wall clearance; 30" min doorway | 31" W × 64" L × 47.5" H upright (76.1" L reclined); 3.2" wall clearance; 31" min doorway |
We may earn a commission when you purchase through links on our site. This does not influence our scoring methodology or recommendations.
Osaki
Osaki Platinum Solis Duo 4D+
Best for Buyers who want Osaki's most capable mechanism and stretch recline, regardless of price
$11,999
Osaki
Osaki 4D Emperor II
Best for Shoppers who want flagship 4D specs at a mid-range street price
$4,499$10,999