Audio T Verdict
The Solidsteel S4-4 is the big one in the S4 family. Four full-width equipment levels and an overall width of just over 1.1 metres create a huge amount of usable space for larger hi-fi, home cinema and AV systems without forcing everything into a narrow vertical tower.
Its width is the real attraction. Suitable components can sit side by side on the same level, so four shelves can accommodate considerably more than four pieces of equipment. That makes the S4-4 particularly useful for systems containing an AV receiver, processor, power amplifiers, digital sources, games consoles and media players, or a substantial hi-fi setup with separate analogue and digital components.
The supporting structure is suitably serious too. Solidsteel currently rates each shelf for up to 110kg, while the aluminium tubes are internally filled with StratoCell sound-absorbing material to help control resonance. Adjustable stainless-steel spikes allow the rack to be levelled accurately and protective floor discs are included.
The standard 245mm / 225mm / 225mm equipment intervals work well with most conventional source and control components, although large or hot-running amplification deserves careful planning. If you genuinely need this much equipment space, the S4-4 offers an enormous amount of flexibility without moving to enclosed AV cabinetry.
Check the Available Space Before Ordering
The S4-4 measures approximately 1114mm wide and 905mm high before equipment is installed. It is a substantial piece of furniture, so check the available floor space, component dimensions, rear cable clearance and access around the rack before ordering.
Solidsteel S4-4 Four-Shelf AV and Hi-Fi Rack
The Solidsteel S4-4 is the four-level model in Solidsteel's current S4 Series of wide AV and hi-fi equipment racks.
The S4 Series takes the basic design philosophy of Solidsteel's narrower S3 furniture and extends it horizontally, creating significantly more equipment space on every level. The result is particularly well suited to home cinema and larger separates systems where arranging suitable components side by side can be more practical than continually adding height.
Made in Italy, the S4-4 combines high-quality MDF equipment platforms with polymer-laminate finishes, StratoCell-filled aluminium support tubes, stainless-steel structural interfaces and adjustable floor spikes.
- Four-level wide AV and hi-fi equipment rack
- Current Solidsteel S4 Series
- Made in Italy
- Designed for hi-fi, home cinema and AV systems
- Approximately 1114mm overall width
- Approximately 905mm overall height
- Approximately 430mm overall depth
- Approximately 500mm usable equipment width per bay
- Two broad equipment bays across each level
- Standard 245mm / 225mm / 225mm vertical clearances
- 110kg maximum load per shelf
- Approximately 243lb capacity per shelf
- Approximately 60kg rack weight
- High-quality MDF equipment platforms
- Premium polymer-laminate finish
- Anodised aluminium tubular supports
- StratoCell sound-absorbing material inside the support tubes
- Stainless-steel upper and lower terminations
- ABS protective shelf interfaces
- Adjustable stainless-steel floor spikes
- Stainless-steel protective floor discs
- Modular construction
- Alternative upright heights available
- Black finish
- White finish
The Largest Standard S4 Rack
The S4-4 sits above the S4-2 and S4-3 as the largest standard configuration in Solidsteel's current S4 family.
Its four wide levels provide a considerable amount of equipment space, particularly because the rack is designed around side-by-side component placement rather than assuming one component will occupy an entire shelf.
That can make it suitable for systems containing combinations such as:
- AV receiver, UHD player, streamer and games console
- Surround processor and multiple power amplifiers
- Turntable, phono stage, streamer and integrated amplifier
- Network transport, DAC, preamplifier and power amplifier
- Multiple source components plus external power supplies
- Mixed hi-fi and home cinema systems
A Wide Rack Rather Than a Tall Tower
The S4 Series approaches equipment storage differently from most traditional hi-fi racks.
A conventional rack generally places one major component on each level. The S4 creates approximately twice the horizontal space of Solidsteel's standard S3 furniture, allowing suitably sized electronics to sit alongside one another.
This can help keep the system visually lower while still accommodating a significant amount of equipment.
Four Shelves Can Mean More Than Four Components
The unusually wide S4 platforms mean a four-shelf S4-4 can potentially accommodate considerably more than four individual components. The exact number depends on equipment width, ventilation and cable requirements, but side-by-side positioning is one of the main advantages of the S4 format.
Approximately 1114mm Wide
The S4-4 measures approximately 1114mm across.
That makes it almost twice as wide as a conventional Solidsteel S3 rack and creates a much broader furniture footprint.
The width can work particularly well:
- Beneath a television or projection screen
- Along a dedicated equipment wall
- Between loudspeakers where equipment placement allows
- In larger rooms where a narrow tower would look out of proportion
- Where several components need to sit side by side
Two Equipment Areas Per Level
The supporting structure divides each broad level into approximately two 500mm-wide equipment areas.
That comfortably accommodates most conventional 430mm to 450mm-wide hi-fi and AV electronics.
Possible side-by-side combinations could include:
- Streamer and CD player
- Blu-ray player and games console
- DAC and preamplifier
- Phono stage and external power supply
- Two suitably sized monoblock amplifiers
- Network player and media server
Use the Bay Width, Not the Overall Rack Width
Although the complete S4-4 is approximately 1114mm wide, the structural supports divide that width into separate equipment areas. Particularly wide components should therefore be checked against the approximately 500mm usable width of the relevant bay.
245mm Lower Equipment Interval
The standard S4-4 configuration provides one approximately 245mm equipment interval.
This is the most generous enclosed level and is therefore the natural starting point for a taller component such as:
- AV receiver
- Integrated amplifier
- Power amplifier
- Large home cinema processor
- Substantial external power supply
Two 225mm Equipment Intervals
The other two enclosed levels provide approximately 225mm of vertical clearance.
These work well with many conventional source and control components, including:
- Network streamers
- CD and SACD players
- Blu-ray and UHD players
- DACs
- Preamplifiers
- Phono stages
- Games consoles
- Media players
- External power supplies
Plan Amplifier Placement Carefully
A large amplifier can physically fit within one of the S4-4's enclosed levels but still require more space for cooling.
Check:
- Chassis height
- Height including equipment feet
- Top ventilation openings
- Side-mounted heatsinks
- Manufacturer-recommended clearance
- Normal operating temperature
Physical Fit Does Not Guarantee Adequate Cooling
An amplifier measuring 210mm high may technically fit inside a 225mm interval but would leave almost no space above it. Always follow the equipment manufacturer's ventilation requirements, particularly with Class A, valve and high-power AV electronics.
The Open Top Platform
The upper platform has no equipment shelf above it and therefore provides unrestricted vertical space.
This can make it the best position for:
- Turntables
- Large integrated amplifiers
- Class A amplifiers
- Valve amplifiers
- Other particularly tall components
- Compatible televisions
The layout of a hi-fi or AV system does not have to follow the traditional rule that the amplifier sits at the bottom if another position offers better ventilation and easier cabling.
Can a Television Sit on the S4-4?
The wide open upper platform can potentially support a television where the television's weight, base and support-foot arrangement are compatible.
Before installation, check:
- Total television weight
- Spacing between support feet
- Depth of the feet or centre pedestal
- Overall stability
- Rear cable requirements
- The television manufacturer's furniture recommendations
Measure the Television Feet
Modern televisions often place their support feet near the outer edges of the screen. Do not assume compatibility based on screen size alone. Measure the actual distance between the feet and compare it with the usable upper platform.
430mm Equipment Depth
The S4-4 is approximately 430mm deep.
This works well with the majority of source components, but deeper amplification and home cinema electronics should be checked carefully.
Rear Cable Clearance Matters
The dimensions of a component rarely tell the complete story once it is installed.
Additional space may be needed behind equipment for:
- HDMI cables
- IEC mains plugs
- Large mains leads
- XLR connectors
- RCA interconnects
- Speaker terminals
- Banana plugs and spades
- Network cables
- Aerial and satellite connections
- Trigger cables
Check Installed Depth, Not Just Chassis Depth
A 410mm-deep AV receiver or amplifier may require substantially more space once the rear panel is fully connected. Leave cables enough room to bend naturally without placing unnecessary pressure on their sockets.
110kg Capacity Per Shelf
Solidsteel's current S4 specification rates each individual equipment platform for loads of up to 110kg.
That is approximately 243lb per shelf.
The high load capacity is especially useful on a wide rack because two or more components may share the same equipment level.
110kg Is the Current Rating for Each Shelf
The load rating applies individually to each equipment platform. Component distribution, stability, ventilation and positioning still need to be considered even when the combined equipment weight is comfortably below the maximum figure.
Built for Heavy AV Systems
Large home cinema systems can accumulate considerable weight surprisingly quickly.
A single level might support:
- A large AV receiver
- A multichannel power amplifier
- Two source components
- Multiple compact power supplies
The S4's substantial shelf rating gives useful headroom for such installations.
MDF Equipment Platforms
The current S4 Series uses high-quality or ennobled MDF equipment platforms with a premium polymer-laminate finish.
The engineered MDF provides a consistent structural platform beneath the electronics, while the laminate creates a durable and uniform outer surface.
Solidsteel does not currently publish a shelf thickness in the S4 technical specification, so compatibility should be judged from the published overall dimensions and equipment clearances rather than assuming an S3 shelf dimension applies.
Black or White
The current S4 Series is available in:
Black gives the S4-4 a traditional equipment-led appearance, while White can help such a large piece of furniture feel visually lighter in a contemporary room.
Anodised Aluminium Tubular Supports
The S4 structure uses anodised aluminium tubular supports.
Solidsteel's current e-Shop also describes them as powder coated.
Aluminium provides useful rigidity while avoiding the extreme weight that would result from constructing a rack of this size entirely from solid stainless steel.
StratoCell Internal Damping
The aluminium tubes are internally filled with StratoCell sound-absorbing material.
A hollow metal tube can exhibit resonant behaviour when exposed to mechanical energy from the floor, loudspeakers and equipment itself. The internal damping material is intended to help control that behaviour.
What Is StratoCell?
StratoCell is the sound-absorbing material Solidsteel installs inside the aluminium support tubes of its S Series furniture. It helps damp resonance within the supporting structure while allowing the rack to remain mechanically rigid.
Stainless-Steel Structural Interfaces
Solidsteel uses stainless steel at several important areas of the S4 structure.
Current manufacturer information identifies stainless steel for:
- Upper terminations
- Lower terminations
- Adjustable floor spikes
- Protective floor discs
ABS Shelf Interfaces
ABS protective discs are used where the equipment platforms meet the supporting structure.
These provide defined interfaces rather than allowing the MDF platforms simply to make direct contact with bare structural metalwork.
Adjustable Floor Spikes
The S4-4 uses adjustable stainless-steel spikes at floor level.
Each can be adjusted so that variations in the underlying floor do not leave the rack rocking between its support points.
Accurate Levelling Matters on a Wide Rack
The wider the furniture, the more likely it is that small variations in floor level will exist from one side to the other.
Accurate levelling helps:
- Keep the rack mechanically stable
- Distribute the load properly
- Avoid rocking under equipment weight
- Provide a level foundation for a turntable
Protective Stainless-Steel Floor Discs
Matching stainless-steel protective floor discs are provided for use beneath the pointed spikes.
These should be used on timber, laminate, tile, polished stone and other surfaces that could otherwise be marked.
Position and Level the Rack Before Loading It
The S4-4 itself weighs approximately 60kg before any equipment is installed. Once several components are added to four levels, the complete installation can become extremely heavy. Assemble, position and level the rack before fully loading it wherever practical.
Why Use a Specialist AV Rack?
Home cinema electronics can be especially awkward to accommodate in conventional domestic furniture.
Purpose-designed open equipment support offers several practical advantages:
- High equipment load capacity
- Improved airflow
- Easy access to rear connections
- Space for substantial cables
- Individual component support
- Less need to stack electronics
- Accurate levelling
- Modular shelf spacing
Avoid Stacking AV Equipment
Stacking components directly on top of one another can create several unnecessary problems.
- Blocked ventilation
- Heat transfer between components
- Additional load on the lower chassis
- Difficult access to connections
- Direct mechanical contact
The sheer amount of equipment space available on the S4-4 makes stacking largely unnecessary in most installations.
Does a Specialist Rack Improve Sound?
The audible effect of changing equipment support varies with the system, floor and room.
Mechanically sensitive equipment such as turntables is generally more dependent on its support than many solid-state source components.
The practical advantages are easier to generalise: stable equipment positioning, improved ventilation, individual support and easier cable management.
Modular Shelf Spacing
The standard S4-4 uses 245mm / 225mm / 225mm equipment intervals, but the S4 architecture is modular.
Solidsteel currently offers custom upright kits ranging from approximately 145mm to 365mm.
This allows the rack to be configured more intelligently where the system contains a mix of very tall and very compact components.
Build the Rack Around Your Equipment
If one large amplifier needs significantly more room while several source components need considerably less, alternative upright heights can make more efficient use of the S4-4's overall size. Speak to Audio T before ordering if you would like help planning a non-standard configuration.
S4-3 or S4-4?
S4-3
- 3 wide equipment levels
- Approximately 670mm overall height
- 245mm / 245mm standard clearances
- Approximately 42kg rack weight
- 110kg capacity per shelf
- Lower overall profile
- Ideal for medium-to-large AV systems
S4-4
- 4 wide equipment levels
- Approximately 905mm overall height
- 245mm / 225mm / 225mm standard clearances
- Approximately 60kg rack weight
- 110kg capacity per shelf
- Considerably more total equipment space
- Ideal for particularly large AV systems
When Is the S4-3 Enough?
The Solidsteel S4-3 is likely to be the neater choice where three wide levels provide enough room for the system.
Remember that each S4 level can accommodate multiple suitably sized components, so it is worth planning the equipment layout before automatically choosing the tallest version.
When Does the S4-4 Make Sense?
The S4-4 becomes worthwhile when the fourth level will genuinely be useful.
This is particularly likely with systems containing:
- Separate surround processor and power amplifiers
- Multiple digital sources
- Games consoles
- Network servers
- External power supplies
- Separate analogue and digital hi-fi sources
What About the S4-2?
The Solidsteel S4-2 keeps the same wide format but uses only two levels.
Its single standard 325mm equipment interval is considerably more generous than the enclosed spaces of the S4-4 and may actually make it the better choice for a smaller system built around a very large AV receiver or amplifier.
S4 Series or S3 Series?
S4 Series
- Approximately 1114mm wide
- Wide AV-oriented layout
- Side-by-side component placement
- 110kg current load rating per shelf
- Black or White
- Ideal where horizontal space is useful
S3 Series
- Approximately 584mm overall width
- Traditional single-width layout
- Usually one major component per level
- 60kg current load rating per rack shelf
- Black, White or Walnut
- Ideal where floor space is more limited
Which Range Makes More Sense?
The Solidsteel S3-4 is a much more conventional four-shelf rack and occupies considerably less floor space.
The S4-4 is the better option when horizontal equipment space is genuinely valuable, particularly for AV installations and systems where several components can sit side by side.
Who Is the Solidsteel S4-4 For?
- Large home cinema systems
- Substantial multi-component hi-fi systems
- AV receivers and multiple source components
- Surround processors and separate power amplifiers
- Systems with side-by-side equipment
- Mixed hi-fi and home cinema installations
- Multiple games consoles and media players
- Systems containing separate DACs and power supplies
- Turntable-based systems requiring considerable equipment space
- Heavy equipment requiring high shelf load capacity
- Rooms where wide furniture works better than a narrow tower
- Customers wanting modular specialist AV furniture
Who Is It Not For?
- Rooms without approximately 1114mm of available width
- Simple systems where an S4-2 or S4-3 is sufficient
- Very tall amplifiers that cannot safely work within the standard enclosed clearances
- Very deep electronics that cannot accommodate their rear connections with a 430mm rack depth
- Customers wanting genuine wood veneer
- Installations requiring enclosed cabinetry or doors
- Rooms where a narrower S3 rack would make better use of floor space
Key Features
- Solidsteel S4-4
- Four-level wide AV rack
- Suitable for hi-fi and home cinema
- Current S4 Series
- Made in Italy
- Approximately 1114mm overall width
- Approximately 905mm overall height
- Approximately 430mm depth
- Approximately 500mm usable width per equipment bay
- Two broad equipment bays per level
- 245mm equipment clearance
- 225mm equipment clearance
- 225mm equipment clearance
- 110kg maximum load per shelf
- Approximately 243lb shelf capacity
- Approximately 60kg 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
- Modular construction
- Custom uprights from approximately 145mm to 365mm
- Black finish
- White finish
Frequently Asked Questions
What is the Solidsteel S4-4?
The Solidsteel S4-4 is a wide four-level AV and hi-fi equipment rack designed for large systems where substantial horizontal component space is required.
What are the dimensions of the Solidsteel S4-4?
The S4-4 measures approximately 1114mm wide, 905mm high and 430mm deep.
How much does the Solidsteel S4-4 weigh?
The rack itself weighs approximately 60kg before any equipment is installed.
How much weight can each S4-4 shelf support?
Solidsteel currently rates each S4 Series shelf for up to 110kg, approximately 243lb.
What are the shelf clearances on the Solidsteel S4-4?
The standard S4-4 provides approximately 245mm, 225mm and 225mm of vertical equipment clearance between its four levels.
How much usable equipment width does the S4-4 provide?
The wide structure provides approximately 500mm of usable equipment width within each bay, allowing suitably sized components to be arranged side by side.
Can two hi-fi components sit side by side on the S4-4?
Yes. Side-by-side equipment placement is one of the principal advantages of the S4 Series, provided the components fit safely and retain sufficient ventilation.
Is the Solidsteel S4-4 suitable for home cinema?
Yes. Solidsteel specifically positions the S4 as an AV rack, and its wide platforms are well suited to AV receivers, processors, power amplifiers, disc players, streamers, games consoles and other home cinema electronics.
Can the Solidsteel S4-4 be used for hi-fi?
Yes. It is equally suitable for larger hi-fi systems where the additional horizontal equipment space is useful.
Can an AV receiver fit in the S4-4?
Many AV receivers will fit, but check chassis height, depth, rear cables and ventilation requirements. The largest standard enclosed interval is approximately 245mm high.
Can a power amplifier fit in the S4-4?
Yes, provided its dimensions, weight and ventilation requirements are compatible. Particularly tall or hot-running amplifiers may be better placed on the open upper level.
Can Class A or valve amplifiers be used on the S4-4?
Yes where the equipment fits safely, although the open top platform may be preferable because it provides unrestricted vertical ventilation.
Can I put a television on the Solidsteel S4-4?
Potentially. Check the television's total weight, base depth and support-foot spacing before placing it on the upper platform.
Is the S4-4 suitable for a turntable?
Yes. The open top level provides a useful position for a turntable. Very springy suspended floors may still make a dedicated wall-mounted turntable shelf worth considering.
What is StratoCell damping?
StratoCell is the sound-absorbing material Solidsteel uses inside the aluminium support tubes to help control resonance within the rack structure.
Does the Solidsteel S4-4 help reduce vibration?
The S4-4 is designed to provide stable and damped equipment support using StratoCell-filled aluminium tubes, defined shelf interfaces and adjustable floor-contact points. Any audible effect will depend on the equipment, floor and wider system.
Does a specialist AV rack improve sound quality?
The audible effect varies from system to system. More universal benefits include stable support, improved airflow, easier cabling and avoiding direct component stacking.
Are the Solidsteel S4-4 feet adjustable?
Yes. Adjustable spikes allow the rack to be levelled accurately on uneven flooring.
Can the S4-4 be used on wooden or laminate floors?
Yes. Stainless-steel protective floor discs are provided for use beneath the spikes on surfaces that could otherwise be marked.
Can the S4-4 shelf spacing be changed?
Yes. The S4 is modular and Solidsteel currently offers custom upright kits providing equipment intervals from approximately 145mm to 365mm.
What is the difference between the Solidsteel S4-3 and S4-4?
The S4-3 has three levels with two 245mm standard intervals. The S4-4 adds a fourth full-width equipment platform and uses standard 245mm, 225mm and 225mm intervals.
What is the difference between the Solidsteel S4-2 and S4-4?
The S4-2 has two levels and one generous 325mm equipment interval, while the S4-4 provides four levels and much greater total equipment capacity but shorter enclosed shelf heights.
What is the difference between Solidsteel S3 and S4 racks?
The S3 Series uses a conventional narrow hi-fi rack format, while the S4 Series is approximately twice as wide and designed for AV systems and side-by-side component placement. Current S4 shelves are rated for 110kg compared with 60kg on conventional S3 rack shelves.
What finishes are available for the Solidsteel S4-4?
The current S4 Series is available in Black and White.
Is the Solidsteel S4-4 made from real wood?
No. The equipment platforms use MDF with a polymer-laminate finish rather than genuine wood veneer.
Where is the Solidsteel S4-4 made?
The Solidsteel S4 Series is made in Italy.
Does the Solidsteel S4-4 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 S4-4 From Audio T?
A rack this large deserves some planning before it arrives. Component dimensions, amplifier and AV receiver ventilation, rear cable clearance, television support-foot spacing and the total weight of the finished system can all affect how the S4-4 should be configured.
Audio T can help check your equipment against the S4-4, compare it with the shorter S4-2 and S4-3 and advise whether the standard shelf arrangement or alternative Solidsteel upright heights would better suit your system.
- Friendly specialist hi-fi and home cinema advice
- Equipment dimension checks
- AV receiver ventilation guidance
- Power amplifier placement advice
- Television support-foot checks
- S4-2, S4-3 and S4-4 comparisons
- S3 and S4 Series comparisons
- Turntable placement advice
- Custom shelf-height guidance
- Spike and levelling setup assistance
- Floor-protection guidance
- Rear cable-clearance advice
- Ongoing after-sales support
Contact your local Audio T store if you would like help planning the Solidsteel S4-4 around your hi-fi, home cinema equipment or television.