Audio T Verdict
The Solidsteel S4-3 is an interesting alternative to the traditional tall hi-fi rack. At just over 1.1 metres wide, its three levels provide considerably more horizontal equipment space, making it possible to arrange compatible components side by side rather than constantly building upwards.
That makes it particularly well suited to home cinema systems, where an AV receiver, disc player, streamer, games console and other electronics may all need space around a television. It can make just as much sense for a larger hi-fi system, especially where a low, wide piece of furniture suits the room better than a narrow tower.
The engineering is substantial. Solidsteel currently rates each S4 shelf for up to 110kg, while the anodised aluminium support tubes are filled with StratoCell sound-absorbing material. Stainless-steel terminations, adjustable spikes and protective floor discs form part of the supporting structure.
With approximately 245mm between each of its three levels, the S4-3 is best suited to conventional-height components rather than especially tall amplification. Get the equipment dimensions right, however, and its combination of width, load capacity and modular construction makes it a very flexible piece of AV and hi-fi furniture.
Check Amplifier and AV Receiver Ventilation
The standard S4-3 provides approximately 245mm of vertical equipment clearance between each level. This is generous for many source components, but large AV receivers, Class A amplifiers and other hot-running electronics may require considerably more free space than their chassis height suggests. Always follow the equipment manufacturer's ventilation guidance.
Solidsteel S4-3 Three-Shelf AV and Hi-Fi Rack
The Solidsteel S4-3 is a wide three-level equipment rack designed for hi-fi, home cinema and AV systems where additional horizontal space is more useful than a conventional narrow rack.
Solidsteel describes the S4 as the wider counterpart to its popular S3 Series. The S4-3 maintains familiar 245mm vertical equipment spacing while expanding the overall width to approximately 1114mm, creating two broad equipment areas across each level.
Made in Italy, the current S4 combines polymer-laminated MDF equipment platforms with anodised aluminium tubular supports filled with StratoCell damping material, stainless-steel structural interfaces and adjustable floor spikes.
- Wide three-level AV and hi-fi equipment rack
- Current Solidsteel S4 Series
- Made in Italy
- Suitable for AV, home cinema and hi-fi systems
- Approximately 1114mm overall width
- Approximately 670mm overall height
- Approximately 430mm overall depth
- Approximately two 500mm-wide equipment areas
- Two approximately 245mm vertical equipment intervals
- 110kg maximum load per shelf
- Approximately 243lb maximum load per shelf
- Approximately 42kg rack weight
- High-quality MDF equipment platforms
- Premium polymer-laminate finish
- Anodised aluminium tubular supports
- Internal StratoCell sound-absorbing material
- Stainless-steel upper and lower terminations
- ABS protective shelf interfaces
- Adjustable stainless-steel floor spikes
- Stainless-steel protective floor discs
- Fully modular construction
- Alternative upright heights available
- Expandable equipment-support system
- Black finish
- White finish
A Wide Alternative to a Conventional Hi-Fi Rack
Most specialist hi-fi furniture is designed around one component per shelf, with the complete system arranged vertically.
The S4 Series takes a different approach.
At approximately 1114mm wide, the S4-3 creates enough horizontal space for compatible components to sit alongside one another. This can reduce the need for an exceptionally tall rack while also working naturally beneath a television or projection screen.
Why Choose a Wide AV Rack?
A wide equipment rack can make particular sense where:
- Several components can be positioned side by side
- A television sits above the equipment
- The room suits lower furniture better than a tall rack
- Home cinema electronics need generous horizontal space
- Separate left and right power amplifiers are used
- Cabling needs to remain easily accessible
- The system mixes hi-fi and AV components
More Shelves Are Not Always the Answer
A wide rack can often accommodate the same number of components as a considerably taller conventional design by using the available horizontal space more effectively. The S4 Series is particularly useful where a low, wide installation suits both the equipment and the room.
Three Full Equipment Levels
The S4-3 provides three wide equipment platforms, with the upper level completely open above.
This creates a large amount of usable equipment space within an overall height of approximately 670mm.
Possible system layouts could include:
- AV receiver and source equipment below a television
- Streamer, disc player, DAC and integrated amplifier
- Turntable, phono stage, streamer and amplifier
- Surround processor and multiple power amplifiers
- Network player, games console and UHD player
- Separate preamplifier and power-amplifier systems
Two 245mm Vertical Equipment Intervals
The standard S4-3 provides approximately 245mm between the lower and middle levels and a further approximately 245mm between the middle and upper platforms.
This is particularly suitable for conventional-height equipment such as:
- Network streamers
- CD and SACD players
- Blu-ray and UHD players
- DACs
- Preamplifiers
- Phono stages
- Games consoles
- Media players
- Many integrated amplifiers
- Many AV receivers
Will a Large AV Receiver Fit?
Many AV receivers will physically fit within 245mm, but they can generate considerable heat.
When checking compatibility, consider:
- Chassis height
- Feet beneath the receiver
- Top-panel ventilation openings
- Manufacturer-recommended clearance
- Side ventilation
- Rear cable space
Do Not Use Every Millimetre of the 245mm Gap
A 235mm-high receiver may technically fit into a 245mm opening, but that leaves almost no airflow above it. For high-power AV receivers and amplifiers, ventilation requirements should determine the shelf position rather than physical fit alone.
The Open Top Platform
The upper equipment level has unrestricted space above it.
This gives the S4-3 a useful location for components that are particularly tall, mechanically sensitive or hot running.
Potential uses include:
- Turntables
- Large amplifiers
- Class A amplifiers
- Valve amplifiers
- Compatible televisions
- Equipment exceeding the enclosed 245mm shelf height
Can a Television Sit on the S4-3?
The wide upper platform can potentially be used beneath a television where its weight, base and support-foot arrangement are compatible.
Always check:
- Total television weight
- Spacing between television feet
- Front-to-back depth of the stand or feet
- Overall stability
- Rear cable access
- Television manufacturer's furniture requirements
Television Screen Width Is Not Enough
Many modern televisions use feet positioned close to the outer edges of the screen. Check the actual distance between the support feet rather than assuming the television will fit because its screen width looks appropriate for an 1114mm rack.
Approximately Two 500mm Equipment Areas
The wide S4 architecture provides approximately 500mm of usable equipment width within each structural bay.
This comfortably accommodates most conventional 430mm to 450mm-wide hi-fi and AV components.
Possible side-by-side combinations include:
- Streamer and CD player
- UHD player and media streamer
- Preamplifier and DAC
- Phono stage and external power supply
- Two compact monoblock amplifiers
- Games console and network player
Measure Individual Components
The overall rack is approximately 1114mm wide, but the supporting structure divides that width into individual equipment areas. Particularly wide components should therefore be checked against the approximately 500mm usable width of the relevant bay rather than the complete rack width.
430mm Equipment Depth
The S4-3 is approximately 430mm deep.
This suits most source electronics but deserves careful checking with larger AV receivers, power amplifiers and high-end integrated amplifiers.
Allow Extra Space for Rear Connections
AV systems can require a significant amount of cable space behind the equipment.
Connections may include:
- HDMI cables
- Speaker cables
- Banana plugs and spades
- IEC mains plugs
- Heavy mains leads
- XLR connectors
- RCA interconnects
- Network cables
- Aerial and satellite connections
- Trigger and control cables
Check Installed Depth Rather Than Chassis Depth
A 410mm-deep AV receiver can require considerably more than 410mm once HDMI, speaker, network and mains cables are connected. Leave enough space behind the rack for cables to bend naturally without placing pressure on their sockets.
110kg Capacity Per Shelf
Solidsteel's current S4 specification rates each equipment platform for a maximum load of 110kg.
That equates to approximately 243lb per shelf.
The substantial load capability is particularly useful in a wide rack because more than one component may share a single equipment level.
110kg Applies to Each Shelf
The current manufacturer rating is 110kg for each equipment platform. Remember that this is a load rating rather than a guarantee that every possible combination of components is suitable. Equipment position, ventilation and stability still matter.
Why the S4 Has a Higher Load Rating Than S3
The conventional S3 rack platforms are currently rated for 60kg each, while the wider S4 Series is rated at up to 110kg per shelf.
That additional capacity makes sense because each wide S4 level can potentially support multiple components rather than a single conventional-width chassis.
MDF Equipment Platforms
Solidsteel's current S4 specification describes the equipment platforms as high-quality or ennobled MDF with a premium polymer-laminate finish.
The engineered MDF provides a consistent structural platform, while the laminate creates a durable and uniform visible surface.
Polymer-Laminate Finish
The S4 platforms are not genuine wood veneer.
The current range is offered in:
Black provides a traditional equipment-led appearance, while White can make such a wide piece of furniture appear visually lighter in a contemporary room.
Anodised Aluminium Tubular Supports
The S4 Series uses anodised aluminium tubular columns within its supporting structure.
Solidsteel's current e-Shop also specifies a powder-coated finish for these tubes.
Aluminium provides useful structural rigidity without making a rack over 1.1 metres wide excessively heavy.
StratoCell Internal Damping
The aluminium tubes are internally filled with StratoCell sound-absorbing material.
This is intended to control resonant behaviour inside the hollow supporting columns rather than leaving them completely undamped.
What Is StratoCell Damping?
StratoCell is the sound-absorbing material Solidsteel places inside its aluminium S Series supports. It helps control resonance within the supporting tubes while allowing the structure itself to remain rigid.
Stainless-Steel Structural Interfaces
Solidsteel's current S4 specification identifies stainless steel at several important parts of the supporting structure, including:
- Upper terminations
- Lower terminations
- Adjustable floor spikes
- Protective floor discs
This combines different materials according to their mechanical role rather than constructing the complete rack from one material.
ABS Shelf Interfaces
ABS protective discs form part of the interface between the equipment shelves and the supporting structure.
They provide defined contact points rather than allowing the MDF platform simply to sit directly against the metalwork.
Adjustable Floor Spikes
The S4 uses individually adjustable floor spikes to allow accurate levelling.
This becomes particularly important on a rack over a metre wide, where even a small variation in floor height from one side to the other can affect stability.
Why Levelling Matters
A correctly levelled equipment rack should sit securely without rocking or twisting under load.
This becomes increasingly important as more equipment is installed and is particularly relevant if a turntable occupies the upper platform.
Stainless-Steel Floor Protectors
Solidsteel supplies stainless-steel protective floor discs for use underneath the spikes.
These should be used on timber, laminate, tile, stone and other surfaces that could be marked by direct spike contact.
Position Before Fully Loading
The S4-3 itself weighs approximately 42kg before any equipment is added. Once several components occupy each level, the complete installation can become extremely heavy. Assemble, position and level the rack before fully loading it wherever practical.
Dedicated AV Furniture and Equipment Support
Purpose-designed AV and hi-fi furniture offers practical advantages over general household cabinetry.
These include:
- High load capacity
- Open airflow around electronics
- Easy access to rear connections
- Accurate levelling
- Individual equipment support
- Less need to stack components
- Modular configuration
Does an AV Rack Affect Sound Quality?
The audible effect of changing equipment support varies with the system, room and floor.
Mechanically sensitive equipment such as turntables can be more dependent on its supporting furniture than many solid-state source components.
The practical advantages are easier to generalise: stable equipment positioning, better ventilation, organised cabling and individual component support.
More About Hi-Fi Furniture and Vibration
Matt from Audio T Cardiff explored equipment support after moving his own system onto Solidsteel furniture. Read Rack 'em up! - Dispelling the Myth Around Hi-Fi Furniture for a practical look at vibration, acoustic feedback and specialist equipment racks.
Fully Modular Construction
The S4 is a modular equipment-support system rather than a permanently fixed piece of furniture.
Solidsteel currently offers alternative upright kits providing shelf spacings from approximately 145mm to 365mm.
This can be especially useful with the S4-3 if one level needs more room for a large AV receiver while another only needs to accommodate slim source components.
Build the Rack Around the Equipment
If your system includes particularly tall or unusually compact components, alternative Solidsteel uprights can make better use of the available space than simply accepting the standard 245mm / 245mm arrangement.
Expandable as the System Grows
The modular design also allows the wider S4 structure to evolve as equipment requirements change.
Additional levels can be considered where a system later gains:
- Additional source components
- Separate power amplification
- An external power supply
- A dedicated DAC
- A home cinema processor
- Additional games or media hardware
S4-2 or S4-3?
S4-2
- 2 equipment levels
- Approximately 475mm overall height
- 325mm standard clearance
- Approximately 28kg rack weight
- 110kg capacity per shelf
- Lower furniture profile
- More vertical room for large equipment
S4-3
- 3 equipment levels
- Approximately 670mm overall height
- 245mm / 245mm standard clearances
- Approximately 42kg rack weight
- 110kg capacity per shelf
- More total equipment space
- Better for larger multi-box systems
When Is the S4-2 Better?
The Solidsteel S4-2 makes sense where two wide levels provide enough equipment space.
Its larger 325mm standard clearance is also useful for tall AV receivers and substantial amplifiers that would be too tightly accommodated within the standard S4-3 configuration.
When Does the S4-3 Make More Sense?
The S4-3 is preferable when the extra full-width equipment level will genuinely be used.
That can provide a surprisingly large amount of total component space because each level itself can accommodate more than one suitably sized component.
S4-3 or S4-4?
S4-3
- 3 levels
- Approximately 670mm high
- 245mm / 245mm clearances
- Lower overall profile
- Excellent for medium-to-large AV systems
S4-4
- 4 levels
- Standard 245mm / 225mm / 225mm clearances
- Additional full-width equipment platform
- Best for particularly large AV systems
- Taller overall installation
When Should You Move to the S4-4?
The four-level S4-4 becomes worthwhile where a genuinely large collection of source, processing and amplification components needs accommodating.
For most systems, however, three extremely wide equipment levels already provide considerably more usable space than the shelf count alone might suggest.
S4 Series or S3 Series?
S4 Series
- Approximately 1114mm wide
- Wide AV-oriented layout
- Side-by-side equipment positioning
- 110kg current load rating per shelf
- Black or White
- Best where horizontal space is useful
S3 Series
- Approximately 584mm overall width
- Traditional single-width layout
- Usually one major component per level
- 60kg load rating per rack shelf
- Black, White or Walnut
- Best where floor space is limited
Who Is the Solidsteel S4-3 For?
- Medium-to-large home cinema systems
- Wide hi-fi systems
- AV receivers and supporting source components
- Systems with equipment positioned side by side
- Separate pre and power amplifier systems
- Systems with multiple digital sources
- Turntable and mixed-source systems
- Rooms where a wide, lower rack suits the layout better
- Compatible television installations
- Heavy equipment requiring substantial shelf capacity
- Customers wanting modular specialist AV furniture
- Systems likely to expand later
Who Is It Not For?
- Rooms without approximately 1114mm of available width
- Simple systems better suited to a conventional-width rack
- Very tall amplification unable to work safely within a standard 245mm interval
- Very deep equipment that cannot accommodate rear cables with the 430mm rack depth
- Customers wanting genuine wood veneer
- Systems requiring enclosed cabinets or doors
- Installations where a narrower S3 rack would make better use of floor space
Key Features
- Solidsteel S4-3
- Three-level wide AV rack
- Suitable for hi-fi and home cinema
- Current S4 Series
- Made in Italy
- Approximately 1114mm overall width
- Approximately 670mm overall height
- Approximately 430mm depth
- Approximately two 500mm equipment bays
- 245mm lower vertical clearance
- 245mm upper vertical clearance
- 110kg maximum load per shelf
- Approximately 243lb capacity per shelf
- Approximately 42kg rack weight
- High-quality MDF equipment platforms
- Premium polymer-laminate finish
- Anodised aluminium tubular supports
- Powder-coated aluminium finish
- Internal StratoCell damping
- Stainless-steel upper terminations
- Stainless-steel lower terminations
- ABS shelf-interface discs
- Adjustable stainless-steel spikes
- Stainless-steel protective floor discs
- Fully modular construction
- Approximately 145mm to 365mm custom upright range
- Expandable equipment-support system
- Black finish
- White finish
Frequently Asked Questions
What is the Solidsteel S4-3?
The Solidsteel S4-3 is a wide three-level AV and hi-fi equipment rack designed to provide substantially more horizontal component space than a conventional narrow hi-fi rack.
What are the dimensions of the Solidsteel S4-3?
The S4-3 measures approximately 1114mm wide, 670mm high and 430mm deep.
How much equipment can fit on the Solidsteel S4-3?
The rack provides three wide equipment levels, with approximately two 500mm-wide equipment areas across each level. The exact number of components will depend on their individual widths, depths and ventilation requirements.
What is the shelf clearance on the Solidsteel S4-3?
The standard S4-3 provides two approximately 245mm vertical equipment intervals.
How much weight can each S4-3 shelf support?
Solidsteel currently rates each S4 Series shelf for up to 110kg, approximately 243lb.
How much does the Solidsteel S4-3 weigh?
The established model-specific specification gives an approximate rack weight of 42kg before equipment is installed.
Is the Solidsteel S4-3 suitable for home cinema?
Yes. Solidsteel specifically positions the S4 as an AV rack, and its wide format is well suited to AV receivers, processors, source equipment, games consoles and other home cinema electronics.
Can the Solidsteel S4-3 be used for hi-fi?
Yes. The wide layout also works well for conventional hi-fi systems, particularly where multiple components can sit side by side or a lower furniture profile is preferred.
Can two hi-fi components sit side by side on the S4-3?
Yes, where their combined dimensions and positioning suit the rack. The ability to accommodate suitable components side by side is one of the S4 Series' main advantages.
Can an AV receiver fit in the Solidsteel S4-3?
Many AV receivers will fit physically, but check chassis height, rear cable depth and ventilation. The standard vertical clearance is approximately 245mm.
Can a power amplifier fit in the S4-3?
Yes where its dimensions, weight and cooling requirements are suitable. Very tall or hot-running amplifiers may be better positioned on the open top level or with a custom shelf spacing.
Can I put a television on the Solidsteel S4-3?
Potentially. Check the television's weight, base dimensions and support-foot spacing carefully before placing it on the upper platform.
Is the S4-3 suitable for a turntable?
Yes. The open upper platform provides a useful position for a turntable. Very springy suspended floors may still make a dedicated wall-mounted turntable shelf preferable.
What is StratoCell?
StratoCell is the sound-absorbing material Solidsteel uses inside the S4 Series aluminium support tubes to help control resonant behaviour within the structure.
Does the Solidsteel S4-3 help reduce vibration?
The S4-3 is designed to provide stable, damped equipment support using internally damped aluminium tubes, defined shelf interfaces and adjustable floor-contact points. Any audible effect depends on the equipment, floor and wider system.
Does an AV rack improve sound quality?
The audible effect of changing equipment support varies between systems. More universal benefits include stable positioning, improved ventilation, easier cable management and avoiding direct component stacking.
Are the S4-3 feet adjustable?
Yes. The rack uses adjustable floor spikes so it can be levelled accurately.
Can the Solidsteel S4-3 be used on wooden flooring?
Yes. Stainless-steel floor-protection discs are provided for use beneath the spikes on timber, laminate and other surfaces that could otherwise be marked.
Can the shelf spacing be changed?
Yes. The S4 Series is modular and Solidsteel currently offers alternative upright kits providing shelf heights from approximately 145mm to 365mm.
Can the Solidsteel S4 Series be expanded?
Yes. The modular design allows the equipment-support configuration to evolve as system requirements change.
What is the difference between the Solidsteel S4-2 and S4-3?
The S4-2 has two levels and a single 325mm standard equipment interval. The S4-3 adds a third full-width platform and uses two 245mm standard intervals.
What is the difference between the Solidsteel S4-3 and S4-4?
The S4-3 has three levels with two 245mm intervals. The S4-4 adds a fourth equipment platform and uses standard 245mm, 225mm and 225mm intervals.
What is the difference between Solidsteel S3 and S4 racks?
The S3 is a conventional-width hi-fi rack, while the S4 is substantially wider and designed to accommodate AV systems and side-by-side components. Current S4 shelves are rated at 110kg compared with 60kg for conventional S3 rack shelves.
What finishes are available for the Solidsteel S4-3?
The current S4 Series is offered in Black and White.
Is the Solidsteel S4-3 made from real wood?
No. The equipment platforms use MDF with a polymer-laminate finish rather than genuine timber veneer.
Where is the Solidsteel S4-3 made?
The Solidsteel S4 Series is made in Italy.
Does the Solidsteel S4-3 require assembly?
Yes. The modular rack requires assembly and should be positioned and accurately levelled before heavy equipment is installed.
Related Solidsteel Products and Audio T Guides
Why Buy the Solidsteel S4-3 From Audio T?
A wide AV rack gives you considerable flexibility, but it also means there are more equipment combinations to consider. Component width, AV receiver ventilation, rear cable depth, television support-foot spacing and the overall floor space all matter.
Audio T can help check your equipment against the S4-3, compare it with the lower S4-2 and narrower S3 Series and advise whether the standard shelf spacing or a custom Solidsteel configuration better suits the system.
- Friendly specialist hi-fi and home cinema advice
- Equipment dimension checks
- AV receiver ventilation guidance
- Television support-foot checks
- S3 and S4 Series comparisons
- S4-2 and S4-3 comparisons
- Turntable placement advice
- Custom shelf-height guidance
- Future expansion planning
- Spike and levelling setup assistance
- Floor-protection advice
- Rear cable-clearance guidance
- Ongoing after-sales support
Contact your local Audio T store if you would like help planning the Solidsteel S4-3 around your hi-fi, home cinema equipment or television.