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Advanced Back Support for Professionals Who Sit All Day

The Office Master Discovery Back DB78 is a tall-back ergonomic task chair built around the Discovery Back — a contoured backrest design that follows the natural curve of the spine to deliver targeted lumbar and mid-back support throughout the workday.

For professionals who spend extended hours at a desk and need a chair that actively supports their posture rather than simply providing a place to sit, the DB78 delivers precision adjustability, commercial-grade durability, and the taller back coverage that standard mid-back chairs can't match.

Key Features & Benefits

• Discovery Back design — Contoured backrest follows the natural spinal curve, providing targeted lumbar and mid-back support that reduces lower back pain and fatigue
• Tall back height — Provides upper back and shoulder coverage beyond what standard mid-back chairs offer; ideal for taller users or those who need comprehensive back support
• Adjustable lumbar support — Customizable lower back positioning to align with your specific spinal curve
• Seat depth adjustment — Accommodates different leg lengths to ensure proper thigh support without pressure behind the knees
• Multi-position armrests — Height and width adjustable to reduce shoulder and neck strain (optional KR-200 armrests available)
• Tilt and lock mechanism — Back angle adjustment with lock for personalized recline positioning
• Pneumatic seat height adjustment — Smooth tool-free adjustment for optimal desk and monitor alignment
• High-density foam cushioning — Maintains comfort and support through extended sitting sessions
• Heavy-duty dual-wheel casters — Smooth movement on carpet or hard floor surfaces
• 250 lb weight capacity
• Manufacturer's limited warranty included

Technical Specifications

• Model: Office Master Discovery Back DB78
• Back Style: Discovery Back — tall back, contoured spinal support
• Weight Capacity: 250 lbs
• Seat Height: Pneumatic adjustment
• Seat Depth: Adjustable
• Lumbar: Adjustable
• Armrests: Height and width adjustable (optional KR-200 armrests)
• Recline: Tilt and lock mechanism
• Casters: Dual-wheel (carpet or hard floor)
• Warranty: Manufacturer's limited warranty
• Manufacturer: Office Master

⚠️ Made-to-Order: Each chair is made-to-order based on your selections to ensure the best fit and performance. Because of this, orders are final—but we're here to help you get it right.

Ideal For

• Professionals spending 6+ hours daily at a desk who need comprehensive back support
• Taller users who find mid-back chairs don't provide adequate upper back coverage
• Anyone experiencing lower or mid-back pain from inadequate chair support
• Corporate offices, healthcare, and education environments seeking reliable ergonomic task seating
• Users stepping up from the DB74 who want taller back coverage

Frequently Asked Questions

What is the Discovery Back design?

The Discovery Back is Office Master's contoured backrest design that follows the natural S-curve of the spine. Unlike flat or minimally contoured backs, it provides targeted support at both the lumbar region and mid-back, reducing the muscular effort required to maintain upright posture during extended sitting.

What is the difference between the DB78 and DB74?

Both feature the Discovery Back design. The DB78 is the tall-back version, providing additional upper back and shoulder coverage — better suited for taller users or those who want more comprehensive back support. The DB74 is the mid-back version for standard-height users who don't require the added height. Our specialists can help you determine which is right for your body.

What armrest options are available?

The DB78 is available with no armrests or with KR-200 adjustable armrests offering height and width adjustment for proper shoulder and elbow positioning.

Is this chair suitable for users with existing back conditions?

The DB78's adjustable lumbar and contoured Discovery Back design are well-suited for users managing lower or mid-back discomfort from prolonged sitting. For existing medical conditions, consult your healthcare provider. We offer ergonomic consulting services to help configure the chair correctly for your specific needs. Learn more here.

Can I try this chair before ordering?

Yes — visit our Bay Area showroom where our certified specialists can walk you through the Discovery Back series and help identify the right model and configuration. We offer ergonomic consulting services in-person and virtually. Schedule a consultation.

How long does delivery take?

As a made-to-order chair, lead times vary by configuration. Contact us for current estimates before placing your order.

What warranty is included?

The DB78 includes Office Master's manufacturer's limited warranty. Contact us for full warranty terms and coverage details.

How does this compare to the Office Master Paramount series?

The Discovery Back series features Office Master's contoured back design for users who need more targeted spinal support. The Paramount Value Series is a more straightforward task chair at a lower price point. If you're unsure which series fits your needs, our specialists can help you compare. Book a consultation.

Why Ask Ergo Works?

With 30+ years of ergonomic expertise, Ask Ergo Works is not a general furniture retailer — we are certified ergonomic specialists who assess your specific needs before recommending any product.

• Certified specialists — Professional ergonomic certifications and ongoing clinical training
• Professional assessment process — We evaluate your posture, work habits, and environment before recommending a chair
• Personalized recommendations — Every recommendation is specific to your body dimensions and workspace
• Enterprise & B2B experience — Volume purchasing support for corporate offices, healthcare, education, and lab environments
• Post-purchase support — Available after delivery to assist with setup, adjustments, and ongoing ergonomic guidance

Not sure if the DB78 is right for you? We offer ergonomic consulting services to help you make the right call. Learn more and book a consultation.