Orthex Sophia 2 vs 3 vs 4: Adjustable Bed Comparison

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What the Sophia Line Has in Common

Orthex is a Canadian manufacturer based in Quebec that has been building adjustable beds for decades. The Sophia line is their consumer-facing range, and three models share a common platform before they diverge into different use cases.

Every Sophia, regardless of trim level, ships with the same core articulation: head inclination up to 68 degrees, foot elevation up to 9 inches, lumbar support up to 4 inches, vibration massage zones, and a wireless remote. Every Sophia is waterproof on the upholstered platform, runs on a lithium battery backup so the bed will return to flat in a power outage, and carries the same warranty: three years on the electrical components and a lifetime warranty on the frame structure.

What separates the three models is what they do beyond head and foot articulation. The Sophia 3 adds the ability to raise or lower the entire bed vertically. The Sophia 4 adds the ability to tilt the bed head-down (Trendelenburg) or feet-down (Reverse Trendelenburg). Each capability layer changes who the bed is built for.

Sophia 2: The Standard Adjustable Bed

The Sophia 2 is what most people picture when they hear “adjustable bed.” Head goes up. Foot goes up. There is a lumbar lift, a massage function, and a wireless remote. The frame stays at one height. There is no medical-device classification.

For the majority of people buying their first adjustable bed, this is the right one. If the goal is to read in bed, watch TV with the head elevated, sleep with the legs slightly raised to take pressure off the lower back, or use the lumbar zone for comfort, the Sophia 2 covers all of it.

Sophia 2 specifications

Sophia 3: Adds Hi-Low Height Adjustment

The Sophia 3 keeps everything the Sophia 2 has and adds vertical height adjustment up to 30 inches. The whole bed raises and lowers.

This sounds like a small feature on paper, but it is the most important difference for a specific group of buyers. If someone in the household has trouble getting in or out of bed, hi-low solves it. The bed can be raised to chair height for easier entry, lowered close to the floor for a fall-safe sleeping position, or set anywhere in between.

The Sophia 3 is also classified by Health Canada as a Class I medical device, the same classification used for at-home recovery beds. This classification is what lets the bed be supplied through some assistive-device programs in Ontario.

Who the Sophia 3 is for

• Aging-in-place households where one partner has knee, hip, or balance issues
• Caregivers who need to raise the bed to a working height
• Recovery from surgery where a low entry-and-exit position helps
• Anyone who has fallen or worried about falling getting out of bed

Sophia 3 specifications

Sophia 4: Full Trendelenburg, Hospital-Style Positioning

The Sophia 4 adds two more capabilities on top of the Sophia 3: Trendelenburg tilt (head-down up to 16 degrees) and Reverse Trendelenburg (feet-down up to 16 degrees). These are the positions normally seen on hospital beds.

Trendelenburg increases blood flow to the head and chest. Reverse Trendelenburg helps with breathing, acid reflux, and some respiratory conditions. The combination is what turns the Sophia 4 from a deluxe adjustable bed into a homecare bed that can be used for post-surgical recovery, palliative care, and complex medical needs without ever leaving home.

If hospital-grade positioning is not on the requirement list, the Sophia 4 is more bed than is needed. It is heavier, costs more, and the extra positioning rarely gets used. But for households where it is needed, nothing in the consumer adjustable-bed category replaces it.

Sophia 4 specifications

Side-by-Side Comparison Table

How to Choose Between the Three

The decision is rarely about price. It is about what the bed needs to do. We walk customers through three questions in the showroom.

What You Should Pay in Canada

The Sophia line is sold through Orthex’s authorized Canadian retailers. Pricing varies meaningfully between retailers, and there is no national-chain pricing on these particular models because Orthex does not sell directly to consumers.

For reference, here is what Orthex’s manufacturer MSRP looks like and what we charge at Mattress Miracle.

What These Beds Pair With

The Sophia frame holds the mattress. It does not include the mattress. Three categories of mattress work well on Sophia frames.

Mattress-in-a-box from our Restonit lineup. The entire Restonit collection is engineered to flex on adjustable bases. Our most popular pairing is the Restonit Cloud Vapor Copper Gel on a Sophia 2.

Sleep In flippable mattresses. Sleep In is Canadian-made, mid-to-high quality, and the entire line is adjustable-base friendly. Worth a look if you also want the longevity benefit of a flippable design.

Restonic mattresses on the Sophia 4 only with caution. The Restonic premium line is built around traditional construction. Some Restonic models are not designed to flex on a hi-low base. We will tell you in the showroom which Restonic models are adjustable-friendly. The short answer: the soft-top and pillow-top Restonic models tend to handle the Sophia better than the firmer flagship models.

Frequently Asked Questions

Related Reading

• Queen Adjustable Bed Under $2,000 Canada
• Compare Adjustable Bed Frame Features and Models
• Orthex Sophia Adjustable Bed Review (Canada 2026)
• Wall-Hugger Adjustable Beds in Canada
• Entry-Level vs Premium Adjustable Beds

Sources

• Orthex Sophia 2 product page, manufacturer MSRP and specifications
• Orthex Sophia 3 product page, manufacturer MSRP, Class I medical device classification, hi-low specifications
• Orthex Sophia 4 product page, manufacturer MSRP, Trendelenburg specifications
• Health Canada medical device classification, Class I device definition