What is an eight-way hand-tied spring system?
An eight-way hand-tied spring suspension uses individual coil springs tied to each other in eight directions by hand with a strong twine. It is traditionally regarded as the highest-quality sofa suspension, used by luxury manufacturers for its individualised support that contours to body weight. Lower-tier alternatives are sinusoidal springs (S-springs), which are widely used and perform well when correctly gauged, and polyester webbing, which is common in cheap sofas and tends to sag early. The suspension used in each SOISU piece is stated in the specification you approve before production, and you can test it in person at our Prabhadevi Experience Centre.
What kind of wood is used in the SOISU frame?
SOISU sofa and bed frames use kiln-dried hardwood with reinforced joinery at stress-bearing points. The frame specification for your piece is written into the drawing and specification you sign before production — what you approve is what arrives. Every piece carries a 2-year warranty on the terms written in your order, with after-sales service by SOISU's own team.
How comfortable should a luxury sofa be?
Well-engineered luxury sofas are calibrated to two body postures: an active upright posture (back angled at 100–105°, seat depth 540–580mm) and a lounging posture (back angled at 115–120°, deeper seat). Both should feel firm-on-arrival and break in to medium-firm over 60 days. If the sofa is plush from day one, the foam is under-spec and will compress within 2–3 years. SOISU sofas are designed to start firm — that is the design intent, not a manufacturing defect.
What is the SOISU recliner mechanism warranty?
Recliner mechanisms in SOISU power recliners (D2122, ZY2723, JN0002, D2402, AW2402, AW2310-D, AW2501) are covered by SOISU's 2-year warranty, on the terms written in your order. SOISU's own team services the mechanisms — motor swaps, switch replacements, USB-port servicing — so you are never left looking for a third-party technician.
How do I know a sofa is genuinely well-built?
Lift the corner — a well-built hardwood-frame sofa is heavier than it looks, with no twist or rattle. Sit on the front edge — the spring system should support evenly, not bow down. Look under the cushion — eight-way hand-tied or 8-gauge sinusoidal springs are the right answer, polyester webbing is not. Check the seam stitching — 10–12 stitches per inch is luxury-grade, 7–8 is industry standard. We invite you to test all of this in person at the Prabhadevi flagship.