SIHOO M56C vs Duorest Alpha
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
Differences at a glance
Sources
- Sihoo M56C Ergonomic Office Chair - Full Back Support with Cotton Seat Cushion – Official US Sihoo Store ↗Checked Oct 13, 2026
- DUOREST ALPHA (official product page) ↗Checked Sep 29, 2026
- Duorest Alpha Brochure (PDF) ↗Checked Sep 29, 2026
- DUOREST Warranty (official) ↗Checked Sep 29, 2026
- Duoback Official Store (Korea) (price) ↗Checked Sep 29, 2026
SIHOO M56CDuorest Alpha
- Price
- $184.99₩413,000 – ₩520,000
- Load capacity
- 300 lb (≈ 136 kg)Standard 300 lbs. weight capacity
- Recline
- Maximum tilt angle of 125° (reclining lock with 1 position)Back reclines 18° from upright position; 3:1 back to seat synchronous movement with 3 position backlock
- Arms
- Armrests adjustable up and down3D arms: height adjustment range 72mm (2.8”), front-to-back adjustment range 40mm (1.6”), pivoting arm caps 17º inward and 17º outward
- Headrest
- Headrest moves up and down and tiltsOptional Headrest accessory adjusts 49mm (1.9”) vertically; pivoting range 63º
- Warranty
- 3 years3 Year Body Frame; 1 Year Mechanism, Cylinder, Form, Casters; 1 Year Flexible Rubber Connector, Seat Pan Materials
Questions
Which has a headrest?
Both: the SIHOO M56C as standard and the Duorest Alpha as an option.




