SIHOO Doro C300 Ultra V2 vs KI Signia

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

SIHOO

SIHOO Doro C300 Ultra V2

$679.99 – $689.99

KI Signia

$930 – $1,076

$250.01

lower starting price for SIHOO Doro C300 Ultra V2 than KI Signia at the brand stores

Differences at a glance

SIHOO Doro C300 Ultra V2KI Signia

Price: $679.99 – $689.99$930 – $1,076
Seat height: 47.5–55.5 cm (≈ 18.7-21.9 in)17.5–22 in (44.5–55.9 cm)
Seat depth: 16.9–18.5 in (≈ 43-47 cm)17–20 in (43.2–50.8 cm)
Recline: Recline Angles 105°, 120°, 135°Five-position back travel limiter provides up to 27 degrees of recline
Arms: 8D Bionic Armrests (up, down, forward, back, rotate, or tilt)Armless, fixed reverse cantilever conference arms, 1D adjustable arms, or 4D adjustable arms
Lumbar support: Domino™ Sacral-Lumbar Support 2.0: moves up or down, 3 support levelsOptional lumbar support with 2.5" of vertical adjustment
Warranty: 3 years (covers manufacturing defects)Lifetime

Which is cheaper, the SIHOO Doro C300 Ultra V2 or the KI Signia?

The SIHOO Doro C300 Ultra V2 is cheaper to start: $679.99 versus $930 for the KI Signia at the brand stores (Oct 2026).