Brand: Stealth Chairs
Replacement Lever
Replacement Lever
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REPLACEMENT ADJUSTMENT LEVER
Universal fit • Height & tilt control • 2-minute installation
YOUR CHAIR'S COMMAND CENTER
The adjustment lever is how you control your chair's height and tilt—the two most critical adjustments for proper ergonomic positioning. Lift the lever to raise or lower your seat height. Push it forward or pull it back to adjust your seat tilt angle. These aren't luxury features—they're essential controls for maintaining proper posture during marathon sessions.
WHAT THIS LEVER CONTROLS:
Designed to fit seamlessly into both adjustment locations on your Stealth Chair, this lever ensures effortless customization regardless of which control mechanism breaks. Whether you're a sound engineer fine-tuning mixes or a lighting technician perfecting a stage setup, this universal lever restores your chair to peak performance.
WHY LEVERS FAIL (AND WHY IT'S NOT YOUR FAULT):
- Metal fatigue: Hundreds of adjustments per week over years of use eventually stress the internal mechanism
- Accidental impacts: Kicked during cable runs, hit by road cases, or caught on gear during moves
- Transport damage: Touring chairs take abuse—levers are exposed and vulnerable
- Over-force: Forcing a stuck adjustment can bend or break the lever mechanism
- Lost during moves: Levers can work loose and fall off during transport
- Wear from heavy use: Multi-user environments with constant height changes accelerate wear
Here's the reality: a broken lever makes your chair basically unusable for professional work. You can't adjust height to match different consoles. You can't dial in your tilt angle. You're locked into whatever random position the chair happens to be in. For professionals who move between rooms, venues, or rigs with different working heights, that's unacceptable.
SIMPLE 2-MINUTE INSTALLATION
Pull or unscrew the damaged lever from the control mechanism (depends on which adjustment point). Some levers pull straight off, others require a small Allen wrench to loosen a set screw.
Slide the new lever onto the control shaft and align it to your preferred angle. If there's a set screw, tighten it just enough to hold—don't over-tighten or you'll strip the threads.
Operate the lever through its full range of motion. It should move smoothly and return to neutral position. Adjust the height up and down to verify the mechanism engages properly.
TOOLS YOU MAY NEED:
Most Stealth levers install tool-free, but some adjustment points have a small set screw that requires a 3mm or 4mm Allen wrench (hex key). If your original lever had a set screw, you'll need the same size for the replacement. Takes literally 30 seconds to tighten once the lever is positioned.
Total time: About 2 minutes. No special skills required.
If you can change a guitar string or swap a mic cable, you can replace this lever.
SPECIFICATIONS
Designed for Stealth Standard and Pro models. Universal fit means this single lever works for both height and tilt adjustment locations. Crafted from durable, high-grade materials that match the sleek, professional aesthetic of your Stealth Chair while standing up to daily use in demanding environments. This is the genuine OEM replacement—not a generic part that might not fit correctly or fail under professional use.
RESTORE CONTROL, OPTIMIZE YOUR POSTURE
A broken adjustment lever isn't just inconvenient—it compromises your entire ergonomic setup. Without height control, you can't match your chair to different work surfaces. Without tilt adjustment, you can't dial in the forward-leaning angle that makes ZenWave™ technology work. You're stuck with whatever position the chair happens to be locked at, which defeats the entire purpose of owning a professional ergonomic chair.
Your $750 chair becomes unusable over a $10 part.
We stock this lever so you can restore full functionality in minutes, not wait weeks for a manufacturer repair.
This is especially critical for touring professionals who work at different venues with different console heights every night. A broken lever on tour means you're stuck at the wrong height for an entire show—which means back pain, fatigue, and reduced performance. Having a spare lever in your road case means you can swap it out during load-in and keep working comfortably.
This lever represents our core philosophy: professional equipment should be built to last, easy to maintain, and impossible to make obsolete. As long as we're making Stealth Chairs, we'll stock every part you need to keep them performing like new.
PRO TIP: KEEP SPARES FOR TOURING RIGS
Touring engineers and techs: keep a spare lever in your road case, gear bag, or with your chair's transport case. Levers are exposed parts that take abuse during load-in/out. For the cost of one venue meal, you've got insurance against being stuck at the wrong height for an entire show.
For venues and studios with multiple chairs: consider keeping 2-3 spares in your parts drawer. When a lever breaks during a session, you don't want to be ordering parts and waiting days for delivery. Swap it in 2 minutes and keep the show moving.
OTHER REPLACEMENT PARTS
Complete your maintenance kit with these other critical replacement parts:
Control backrest height positioning for perfect lumbar support
Restore smooth pivoting motion and ZenWave™ technology
Extended height range for lighting positions and standing consoles
Features
Features
Universal Fit: Compatible with both height and tilt adjustment locations on all Stealth Chair models.
Durable Build: Made from high-grade, long-lasting materials designed for daily professional use.
Ergonomic Design: Smooth, precise control for easy chair adjustments, enhancing comfort and posture.
Sleek Aesthetic: Matches the professional and modern design of Stealth Chairs.
Easy Installation: Quick and hassle-free replacement process.
Dimensions
Dimensions
Length: 5.5 inches (14 cm)
Width: 1.2 inches (3 cm)
Handle Thickness: 0.5 inches (1.3 cm)
Compatibility: Designed for Stealth Standard and Pro models.
Who Is This For?
Who Is This For?
Music and Sound Engineers: Ensures your chair stays in top condition for hours of precise work in the studio.
Lighting Technicians: Provides dependable adjustability during long sessions in control rooms or on location.
Ergonomics Enthusiasts: Perfect for anyone dedicated to maintaining optimal posture and comfort.
Stealth Chair Owners: Ideal for professionals and creatives who rely on the Stealth Chair for daily support and ergonomic health.
Keep your Stealth Chair performing at its best with this reliable replacement lever—tailored for the demands of your industry.
Warranty
Warranty
Every Stealth Chair is backed by a comprehensive 5-year warranty, ensuring long-lasting durability and performance. We stand behind the quality of our ergonomic design and ZenWave technology, so you can focus on your work with peace of mind. Our warranty covers manufacturing defects, ensuring your chair stays as dependable as the day you purchased it.
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DETAILS
STEALTH CHAIR TECHNOLOGY
Patented engineering that actually improves your back health while you work
WHY TRADITIONAL CHAIRS DESTROY YOUR BACK
The revolutionary Stealth™ chair was designed for professional music, lighting, and video engineers who sit at different heights working at consoles, desks, and control surfaces. Specifically produced in non-reflecting Midnight Black, the Stealth is perfect for FOH or side-stage locations—it won't reflect spotlights or light sources, keeping you invisible while you work your magic.
SEE THE DIFFERENCE IN ACTION
Watch how ZenWave™ motion technology supports your body in real working positions
CRITICAL SPECS & WHY THEY MATTER
Why it matters: Stage lights, camera rigs, and console monitors won't catch reflections from your chair. Critical for FOH positions, broadcast facilities, and side-stage work where even small reflections can distract performers or create visual issues on camera. This isn't about aesthetics—it's about professional invisibility.
Why it matters: The same material used in military and aerospace applications. This isn't cheap plastic—it's engineered composite that flexes precisely to distribute weight while supporting up to 350 lbs. The frame's unique flexing properties work with the mesh tensioning to eliminate pressure points. This technology is what makes the ZenWave™ motion possible.
Why it matters: Not all mesh is created equal. The Stealth uses different tension zones across the seat—tighter where you need support, more flexible where you need give. This precise engineering disperses your weight optimally regardless of your body position. Combined with the fiber-reinforced frame, this creates the "floating" sensation that eliminates pressure points completely.
Why it matters: When you lean forward to work, traditional chairs force your pelvis to rotate backward—stacking your spine unnaturally and crushing your discs. The Active Tilt seat pivots forward with you, maintaining proper pelvic position and natural spine curvature. This single feature prevents the 40%+ disc pressure increase that standard chairs create. You can lean into marathon sessions without cumulative damage.
PATENTED ZENWAVE™ MOTION TECHNOLOGY
The patented ZenWave™ motion provides unbinding, stress-free support as you lean forward naturally, protecting your lower back from further injury. The scientifically designed backrest moves with you to massage the lumbar area of your spine, increasing blood flow and nutrients to lower back muscles and intervertebral discs.
The patented ZenWave™ motion technology allows you to float forward and backward without harmful pressure. Your body's natural movements are supported, not restricted.
The Active Tilt™ seat plate pivots smoothly forward and backward to promote proper body alignment, maintaining your natural lordosis curve in all positions.
The "Free-Float" backrest stays with you as you lean forward, giving continuous support. Unlike static backrests that abandon you when you work.
Customize your seat and backrest position with three lever adjustments. Height, tilt angle, and backrest tension—dial in your perfect working position.
Cool breathable mesh prevents perspiration buildup and keeps your clothes looking fresh. No more sweat-soaked shirts during marathon sessions.
The floating backrest actively massages your lumbar region with every movement, increasing blood flow and nutrient delivery to discs and muscles.
PRESSURE DISTRIBUTION: TRADITIONAL VS STEALTH
Traditional Office Chair
Stealth Chair with ZenWave™
These aren't theoretical numbers. Independent ergonomic studies show that the Stealth Chair reduces pressure points by 70% compared to traditional office chairs, while providing 80% more continuous lumbar support during forward-leaning work positions. The result? You can work longer, feel better, and protect your career from chronic pain.
PERFORMANCE OVER TIME: 16-HOUR SESSION
- Consistent energy through 16+ hour sessions
- No back pain during or after work
- Better focus in final hours of project
- Reduced fatigue-related mixing errors
- Can work multiple days without recovery time
- Significant fatigue after 6-8 hours
- Lower back pain starting at hour 4
- Mental fog in final hours
- Increased mistakes and revision needs
- Require full day recovery between sessions
The difference compounds over years. Engineers using Stealth Chairs report 60% less chronic back pain and 70% fewer days lost to injury compared to colleagues using traditional office chairs. Your chair is either extending your career or ending it.
THE CONVEX-SHAPED FLOATING BACKREST
Most backrests are concave—curved inward. This creates pressure points and forces unnatural posture. The Stealth backrest is convex—shaped to exactly match the natural outward curve of your lumbar spine.
Combined with the spring-loaded floating mechanism, the backrest "floats" with your movements as you lean forward and backward. This constant rolling motion actually massages the muscles in your lower back, increasing blood flow and hydrating your intervertebral discs.
The result? Your back muscles stay refreshed even during extended work sessions. Unlike any other chair in the world, Stealth models support you in traditional upright seated position OR forward-tilted declining position. For the first time in human existence, there's a better, healthier way to sit.
The convex shape matches your spine's natural curve, eliminating pressure points and providing continuous massage with every movement
MILITARY-GRADE MATERIALS & CONSTRUCTION
Aerospace-grade composite materials engineered to flex precisely while supporting 350 lbs
Industrial-strength hydraulic lift system rated for 100,000+ cycles
Variable-tension zones engineered for optimal pressure distribution
Non-reflective midnight black finish resists chips, scratches, and stage wear
Every component is selected for one reason: longevity under professional use.
We don't cut corners. We don't use cheaper materials. We build chairs that outlast trends, tours, and technology upgrades. That's why we back them with a 5-year warranty—one of the longest in the entire furniture industry.
EXPERIENCE ZENWAVE™ TECHNOLOGY
Patented engineering backed by ergonomic science • 5-year warranty • Lifetime support
The only chair designed for how professionals actually work
Free shipping • 30-day trial • Replacement parts available
"Unlike any other chair in the world, Stealth models can be used in traditional upright seated position or in a forward-tilted declining position. For the first time in human existence, there's a better, healthier way to sit."
ABOUT STEALTH
ABOUT STEALTH CHAIRS
Almost 40 years of engineering excellence • Trusted by the world's top studios, tours, and venues
THE PROBLEM EVERY ENGINEER FACES
Here's something they don't teach you in audio school: the wrong chair will end your career faster than bad monitoring.
Almost 40 years ago, ergonomic researchers made a discovery that should have changed everything. When you move from standing to sitting, the load on your intervertebral discs increases by over 40%. And when you lean forward to work—the position every engineer, lighting designer, and FOH tech spends hours in daily—traditional office chairs become torture devices.
"As you raise your thigh to sit, forcing your knee to a 90-degree angle, your pelvis rotates backward and tucks your tailbone under. This positioning stacks your intervertebral discs in a way that creates massive pressure on the discs, the nerves radiating from your spinal cord, and the connective tissues in your lower back. This isn't discomfort—it's cumulative trauma disorder. The kind of chronic back pain that ends careers."
— Ergonomic Research, 1985
Standard office chairs are designed for people who lean back and rest. You don't rest. You work. You lean forward over consoles. You reach for faders. You're locked in position for hours chasing a mix, programming a light show, or dialing in a broadcast feed. Every minute in the wrong chair compounds the damage.
We built Stealth Chairs because there wasn't a better way to sit—until now.
WHO WE ARE
ErgoLab has been an industry leader in ergonomically correct chair design and manufacturing for nearly four decades. We're not a furniture company that stumbled into pro audio—we're ergonomic specialists who understand your unique demands.
People are different. Not profound, but most chair manufacturers overlook this. At ErgoLab, we've embraced it by designing each chair to not only fit your body, but to specifically perform in your demanding work environment.
WHY WE EXIST
Sit in a Stealth Chair for any length of time and you'll realize it's like nothing you've sat in before. That's because we design for a specific combination of physical attributes and professional responsibilities.
Our exclusive designs provide unparalleled support that promotes proper posture during both resting and working activities, minimizes fatigue, reduces chronic back/neck/arm pain, and increases circulation. All of which help you perform at your best.
THE SCIENCE: PATENTED ZENWAVE™ TECHNOLOGY
Using patented technology, we designed a chair that allows you to maintain the natural lordosis curve in your lower back while leaning forward—something impossible with traditional chairs.
The secret? A seat shell that pivots as you lean forward, combined with a convex-shaped, specially tensioned mesh surface. This eliminates harmful loading of the intervertebral discs in both active working and resting positions.
This technology also equalizes pressure from the seat surface, eliminating uncomfortable pressure points under your thighs, tailbone, and hips as you lean forward. You'll feel like you're floating.
THE FLOATING BACKREST THAT WORKS WITH YOU
While most backrests are designed with a concave shape (which creates pressure points), our backrest is shaped to exactly match the convex lumbar curve of your lower back. Combined with a spring-loaded floating mechanism, the backrest literally moves with you as you lean forward and backward.
Here's what makes this revolutionary:
The floating motion constantly rolls up and down your back, actually massaging the muscles to increase blood flow and hydration of the intervertebral discs. This massaging action keeps your back muscles refreshed even during marathon 16-hour sessions. Your back gets better as the day goes on, not worse.
Unlike any other chair in the world, Stealth models can be used in traditional upright seated position OR in a forward-tilted declining position. For the first time in human existence, there's a better, healthier way to sit.
TRUSTED BY THE INDUSTRY'S BEST
From major recording studios to world tours • From broadcast facilities to festival FOH positions
Stealth Chairs are the choice of professionals who refuse to compromise
WHERE STEALTH CHAIRS WORK
A Stealth Pro Chair at front-of-house
Tracking, mixing, mastering—anywhere engineers spend hours leaned forward over consoles
FOH, monitor world, lighting control—non-reflective midnight black won't catch stage lights
Side stage, control rooms, anywhere you need height adjustment and mobility
Video engineering, post-production, control rooms—precision work requires precision seating
Houses of worship, theaters, arenas—anywhere professional audio happens
Studio sessions, rehearsals, live performance—Performer Series stools for instruments
BUILT TO LAST, DESIGNED TO ENDURE
We don't cut corners. High-strength fiber-reinforced frames—the same material used in aerospace and military applications. Precision-tensioned mesh engineered to maintain its properties through years of daily use. Class 4 gas cylinders. Powder-coated bases. Every component selected for durability, not price.
That's why we back every Stealth Chair with a 5-year comprehensive warranty—one of the longest in the entire furniture industry. Most companies offer 1-2 years. We offer five. Because when you're engineering records that will be heard for decades, your chair should be built to the same standard.
WE ACTUALLY SELL REPLACEMENT PARTS
These chairs last so long, we actually sell replacement parts. Suspension bushings, cylinders, casters, levers, backrests—everything is serviceable and available. While other manufacturers expect you to throw away a $750+ chair when one component fails, we designed Stealth Chairs to be maintained and repaired.
This isn't planned obsolescence. This is engineered longevity.
Buy once, maintain forever.
Available replacement parts include: extra-tall cylinders for lighting positions • TourMax heavy-duty casters for tour life • suspension bushings for wear and tear • paddle arms for added support • executive backrests for reclining • beverage holders • chair glides for stationary positions. Everything you need to keep your chair performing like new.
CUSTOMER SERVICE THAT ACTUALLY CARES
Unlike companies that disappear after the sale, we refurbish our own chairs in-house and provide industry-leading customer support. Got a question at 11 PM before a session? Need a replacement part shipped overnight? Want to upgrade your existing chair?
We're here for you—not just at purchase, but for the life of your chair. When you invest in a Stealth Chair, you're not just buying furniture—you're joining a community of professionals who demand excellence and get real support when they need it.
CONNECT WITH US
We're located in Centennial, Colorado and ready to support you
7300 S Tucson Way
Centennial, CO 80112
(844) 319-7201
Call anytime for support
Monday - Friday
9:00 AM - 5:00 PM MT
EXPERIENCE THE DIFFERENCE
40 years of engineering excellence • 5-year warranty • Lifetime support
Your back will thank you. Your career will thank you.
"From major recording studios to world tours, from broadcast facilities to festival FOH positions—
Stealth Chairs are the choice of professionals who refuse to compromise."
Made for professionals, by professionals. Every Stealth Chair is engineered to support the people who create the soundtrack of our lives.
From the first take to the final master, we've got your back—literally.
SHIPPING
Shipping Varies based on size and location.
Each order is custom upholstered, assembled, and inspected before it leaves our facility in Centennial Colorado.
Most orders are completed within 2 weeks' time and shipped within the USA for a total of 3-4 weeks turnaround.
There are times when an order may be placed on backorder and you will be notified by the email and or phone number you provide.
For shipping, we commonly use UPS and have a standard rate of $99 to cover all costs of shipping in the USA. This allows us to ship daily from our facility to you in a timely manner and update your order accordingly.
On some larger orders, it may require custom freight or pallet-based shipping. We will work with our vendors to find the best available rate on shipping and or split an order to get it to you in a timely fashion and or reduce cost.
Once you place an order with Stealth Chairs and you are working with a dealer they will be notified that the order is confirmed and or shipping to make things easier for order transparency. If the order is shipping to the dealer you will still be notified of the order placement and or shipping by email on the order placed. If you would like additional notifications we can send them as well to the emails you provide and or you update VIA your crown seating account.
If You are outside the USA
Please Check with https://www.universal-distribution.co.uk/stealth Shipping will be calculated at check out and we are not responsible for any tariffs involved. You will be notified by the shipping company of these tariffs you are responsible for. We do our best to make sure you get the best rate by DHL, UPS, and or other companies to complete the shipping without additional costs. An average order with custom upholstery outside the USA is about 6-8 Weeks before you receive it.
Back-ordered based on materials
We use the best upholstery, materials, and components to create a seating experience that will last a lifetime. In doing this sometimes certain parts may be back-ordered due to volume, waiting on shipments, and or customized options provided for you. You will always be notified provided by the email on file and or a phone call from a representative to let you know of the new lead time and or options to change the order to expedite delivery.
Working with a dealer
When working with a dealer there may be times when your order is not updated by us. This is due to the dealer arranging the best delivery window and or notification has been paused to await other items from additional vendors, parts, and or items that you have placed on a larger order. You will be notified by your dealer on when or where these orders are from Stealth Chairs and if there is a delay the dealer can notify us or you of the expected time window based on the order.
How does the Stealth Chair come and or is it assembled?
Each stool may be dissembled based on the best method of shipping. The stool will be detached from the base and cylinder to make shipping easy. Each stool takes an average of 5-15 minutes to assemble out of the box. We do offer fully assembled stools based on your order for additional costs and shipping. Please reach out after you place the order to have it fully assembled and you will receive a separate invoice for this service.
Has my order shipped?
Click the "My Account / Order Status" link at the top right-hand side of our site to check the status of your order. How do I change quantities or cancel an item in my order?
Click the "My Account / Order Status" link at the top right-hand side of our site to view orders you have placed. Then click the "Change quantities / cancel orders" link to find and edit your order.
Please note that once an order has begun processing or has shipped, the order is no longer editable.
How do I track my order? Click the "My Account / Order Status" link at the top right hand side of our site to track your order.
My order never arrived. Click the "My Account / Order Status" link at the top right hand side of our site to track your order status. Be sure that all of the items in your order have shipped already. If you order displays your Package Tracking Numbers, check with the shipper to confirm that your packages were delivered. If your packages each show a status of "delivered", please contact customer service for assistance.
An item is missing from my shipment. Click the "My Account / Order Status" link at the top right hand side of our site to track your order status. Be sure that all of the items in your order have shipped already. If you order displays your Package Tracking Numbers, check with the shipper to confirm that your packages were delivered. If your packages each show a status of "delivered", please contact customer service for assistance.
My product is missing parts. Click the "My Account / Order Status" link at the top right-hand side of our site to track your order status. Be sure that all of the items in your order have shipped already. If your order displays your Package Tracking Numbers, check with the shipper to confirm that your packages were delivered. If your packages each show a status of "delivered", please contact customer service for assistance.
When will my backorder arrive? Backordered items are those which our suppliers are unable to predict when they will have more in stock, but as soon as they do, we will be able to ship the item to you.
International ShippingDo you ship to my country?Please create an account by clicking the "My Account / Order Status" link at the top right hand side of our site. During signup, we'll ask for your shipping address details including country. If your country is not in the dropdown menu of available countries, unfortunately, we cannot ship to your country at this time.What are my payment choices?During the checkout process, you may choose any of our current payment options and continue to place your order. Please note that we will not ship your order until we receive payment from you.When will my order ship and what are my shipping charges?Shipping is automatically calculated prior to submit your payment information. Simply add items to your cart and proceed to the Checkout page where you will be offered Shipping Method choices and their prices. We will ship your order shortly after we receive payment from you.What is the return policy?Please see ourTerms & Conditionsfor complete details regarding our return policy.Do I have to pay sales tax?You only have to pay sales tax if you are located in the same state as our warehouse.I have a question on my charges.Click the "My Account / Order Status" link at the top right-hand side of our site to review your orders. You may compare your order history on our website, with your financial records. If you have further questions or concerns, please contact customer service for further assistance.I need a copy of my receipt/invoice.Click the "My Account / Order Status" link at the top right-hand side of our site to print invoices.When will my credit appear on my account?Credits usually take 7-10 business days from the time we receive your item(s).When will my credit card be charged?Your credit card will be charged within 24 hours prior to the shipment of your item(s).
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