Audio T Verdict
The Solidsteel S3-A is designed to solve a very specific problem: where do you put a large, heavy power amplifier when it is too deep, too hot or simply too substantial to make sense inside the main equipment rack?
At just 125mm high, the S3-A keeps the amplifier close to floor level while providing a dedicated 430 x 583mm equipment platform. Its current 120kg load capacity comfortably accommodates some extremely substantial amplifiers, while the completely open space above the component can be particularly useful for Class A, valve and other hot-running designs.
There is considerably more engineering here than simply putting an MDF board on four short legs. The aluminium supports are internally filled with StratoCell damping material, the 30mm MDF platform uses a durable polymer-laminate finish, and adjustable stainless-steel spikes allow the stand to be accurately levelled.
For a large stereo power amplifier, substantial integrated amplifier or a pair of monoblocks using one stand each, the S3-A is a neat way to provide proper support without sacrificing another level in the main rack.
Check the Amplifier Footprint Before Ordering
The S3-A platform measures approximately 430mm wide x 583mm deep. Some full-width amplifiers are wider than 430mm, so check not only the outer chassis dimensions but also the position of the amplifier's support feet. All feet must remain safely supported and the component must be completely stable.
Solidsteel S3-A Power Amplifier Stand
The Solidsteel S3-A is the regular-size dedicated amplifier platform within the company's current S3 Series.
Designed and manufactured in Italy, it provides a low-profile support for power amplifiers, integrated amplifiers, monoblocks and other substantial hi-fi components that benefit from being positioned separately from the main equipment rack.
The S3-A combines a substantial 30mm MDF platform with anodised aluminium supports internally filled with StratoCell damping material, steel structural hardware and adjustable stainless-steel floor spikes.
- Dedicated low-level amplifier stand
- Current Solidsteel S3 Series
- Current manufacturer designation: A - Regular Amp Stand
- Designed and manufactured in Italy
- Approximately 430mm wide
- Approximately 583mm deep
- Approximately 125mm overall height
- Approximately 7kg stand weight
- Current maximum amplifier-stand load: up to 120kg
- 30mm MDF equipment platform
- Premium polymer-laminate finish
- Anodised aluminium support poles
- StratoCell damping material inside the supports
- Galvanised-steel frame and fixing components
- Powder-coated structural hardware
- Adjustable M8 stainless-steel floor spikes
- Stainless-steel protective floor discs included
- ABS protective interfaces
- Black finish
- White finish
- Walnut-effect finish
Why Use a Dedicated Amplifier Stand?
Power amplifiers can present very different installation requirements from conventional source components.
They are often:
- Heavier
- Deeper
- Hotter running
- Connected to thicker cables
- Fitted with large heatsinks
- More difficult to accommodate within normal rack spacing
Putting the amplifier on its own low-level stand can therefore make practical sense even before considering vibration control.
Keep Heavy Amplification Close to Floor Level
Some high-end stereo power amplifiers weigh several tens of kilograms.
Positioning that mass close to the floor avoids placing unnecessary weight high in a conventional equipment rack and can make installation and servicing much easier.
The current S3 specification rates its dedicated amplifier stands to support up to 120kg, giving the S3-A substantial capacity for unusually heavy electronics.
120kg Maximum Load
Solidsteel's current S3 specification states that its dedicated power-amplifier stands are designed to carry up to 120kg.
That is approximately 265lb.
For most domestic amplifiers, physical dimensions, foot placement and cooling requirements are likely to become limiting factors long before the basic weight capacity does.
Weight Is Only One Part of Compatibility
An amplifier weighing 40kg may be comfortably within the S3-A's load rating but still be unsuitable if its feet do not fit securely on the platform or if its intended position restricts ventilation. Check weight, width, depth, foot spacing, cabling and cooling together.
A Deep 583mm Platform
The S3-A is particularly useful for deep amplification.
At approximately 583mm front-to-back, it provides considerably more depth than the standard 430mm shelves used by the conventional S3 equipment racks.
This additional depth can be particularly helpful with:
- Large stereo power amplifiers
- High-end integrated amplifiers
- Class A amplifiers
- Valve amplifiers
- Large external power supplies
- Equipment with widely spaced front and rear feet
Allow for Rear Connections
The amplifier chassis itself is not the only thing occupying space.
Additional depth may be needed for:
- IEC mains plugs
- Large mains cables
- Speaker binding posts
- Banana plugs
- Spade connectors
- XLR interconnects
- RCA interconnects
- Trigger and control cables
Do Not Force Heavy Cables Into Tight Bends
Particularly substantial mains and speaker cables can place considerable leverage on sockets if forced sharply against a wall. Leave enough rear space for connections to exit the amplifier naturally.
430mm Platform Width
The S3-A platform is approximately 430mm wide.
That suits many conventional hi-fi components, but some full-width amplifiers use chassis measuring around 440mm to 480mm across.
A small amount of chassis overhang does not necessarily mean an amplifier cannot be used, but the support feet themselves must sit safely on the stand and the component must remain stable.
Support the Feet, Not Just the Chassis
If any amplifier foot would sit beyond the equipment platform, choose another support. The S3-A should provide a stable foundation rather than relying on the amplifier balancing across the edges of the shelf.
30mm MDF Equipment Platform
The S3-A uses the same substantial 30mm MDF construction found throughout the S3 Series.
Solidsteel currently describes its S3 platforms as ennobled MDF with a premium polymer-laminate finish.
The engineered MDF core provides a relatively uniform structure, while the considerable thickness gives the platform useful rigidity under heavy loads.
Walnut, Black and White Finishes
The S3-A is available in three standard shelf finishes:
Black offers the most conventional hi-fi appearance, White works particularly well in lighter modern interiors, while Walnut introduces a warmer furniture-style finish.
Walnut Is a Laminate Finish
The S3 Walnut option is a decorative wood-effect polymer laminate over the MDF platform rather than genuine timber veneer. Solidsteel's HF Series Elite is the range to consider where a real wood-veneer finish is required.
Anodised Aluminium Support Poles
The low structural supports beneath the platform are manufactured from anodised aluminium.
Aluminium provides the rigidity required to carry substantial equipment while keeping the stand itself relatively manageable at approximately 7kg.
StratoCell Internal Damping
The aluminium support tubes are internally filled with StratoCell sound-absorbing material.
Rather than leaving the metal sections as completely hollow tubes, Solidsteel adds damping material intended to reduce resonant behaviour within the support structure itself.
What Does StratoCell Do?
A hollow metal support can resonate when mechanical energy reaches it.
Internal damping is intended to reduce that tendency while retaining the rigidity needed to support heavy equipment securely.
It forms part of a wider design approach rather than acting as a single isolated vibration-control component.
Galvanised-Steel Structural Hardware
Solidsteel's current S3 information specifies galvanised-steel frame and fixing components finished with durable powder coating.
The complete S3-A therefore combines:
- 30mm MDF equipment platform
- Polymer-laminate shelf finish
- Anodised aluminium supports
- StratoCell internal damping
- Galvanised-steel frame and fixing hardware
- Stainless-steel adjustable floor spikes
- Stainless-steel protective floor discs
- ABS protective interfaces
Adjustable M8 Stainless-Steel Spikes
The S3-A uses independently adjustable stainless-steel spikes with an M8 thread.
These allow small irregularities in the floor to be compensated for so that the complete stand remains stable on all of its support points.
Why Levelling Matters
A heavy amplifier should not rock or move on its supporting furniture.
The first job of any amplifier stand is therefore to provide a completely stable base.
Correctly adjusting the floor-contact points helps ensure the platform is securely supported before the amplifier is installed.
Stainless-Steel Floor-Protective Discs
Solidsteel includes stainless-steel S Series protective pads with current S3 products.
These sit underneath the pointed spikes where direct metal contact could mark timber, laminate, tile, stone or another finished floor.
Position and Level the Stand Before Loading
A large power amplifier can be extremely heavy. Wherever possible, position and level the S3-A first and then carefully install the amplifier. Use the supplied protective discs wherever direct spike contact could damage the floor.
Why Amplifier Ventilation Matters
Heat is one of the strongest practical arguments for moving a large amplifier out of the main rack.
Power amplifiers can generate considerable heat through:
- Large transformers
- Output stages
- Power supplies
- Class A bias
- Valve circuitry
A low-level stand leaves the entire area above the amplifier open, allowing considerably more freedom for natural airflow than an enclosed equipment shelf.
Open Above Does Not Mean Ventilation Can Be Ignored
Always follow the amplifier manufacturer's installation requirements. Do not position the S3-A beneath low furniture, curtains or another obstruction if doing so would restrict the required airflow.
Particularly Useful for Class A Amplifiers
Class A amplification can run very warm because the output stage operates at high current even when very little music is being reproduced.
Keeping such an amplifier on an open low-level platform can make considerably more sense than placing it inside a closely spaced equipment rack.
Suitable for Valve Amplifiers
The S3-A can also work well beneath valve amplifiers where the equipment dimensions and weight are compatible.
The unrestricted space above the platform is particularly useful for equipment where valves and output transformers need generous airflow.
Suitable for Integrated Amplifiers
Despite the S3-A being described as an amplifier stand, it is not restricted to separate power amplifiers.
A large integrated amplifier can also be an excellent candidate where it is:
- Too deep for the main rack
- Particularly heavy
- Hot running
- Connected to substantial cables
- Better positioned close to floor level
Suitable for Monoblocks
A pair of S3-A stands can provide independent platforms for left and right monoblock power amplifiers.
This can allow the amplifiers to sit nearer their respective loudspeakers and, depending on the system layout, may make shorter speaker-cable runs possible.
One Stand or Two?
A conventional stereo power amplifier normally requires one S3-A. A pair of monoblock amplifiers can use one stand each, particularly where the amplifiers are positioned beside the loudspeakers rather than together near the source equipment.
Free a Shelf in the Main Rack
Moving a power amplifier onto its own platform can also make the rest of the system easier to organise.
For example, an S3-3 rack could hold:
- Turntable
- Streamer or digital source
- Preamplifier
with the power amplifier separately positioned on the S3-A.
This can provide a cleaner arrangement than moving to a much taller rack purely to accommodate one very large amplifier.
Does an Amplifier Need Vibration Isolation?
An amplifier is generally less obviously mechanically sensitive than a turntable, but its support still matters.
A dedicated stand provides:
- A stable foundation
- Accurate levelling
- Mechanical separation from the main equipment rack
- Improved ventilation
- Easier cable routing
- Protection from placing the amplifier directly on the floor
How audible any mechanical difference is will depend on the amplifier, loudspeakers, floor and wider system.
Dedicated Support Without Overstating It
A good amplifier stand does not change the electrical specification of the amplifier. Its job is to provide stable, well-damped support, appropriate ventilation and a sensible mechanical environment. Any resulting sonic difference will depend on the particular system and installation.
Audio T's Experience With Specialist Hi-Fi Furniture
Equipment support is one of those areas where the benefit depends heavily on the room and system rather than there being one answer for everybody.
Matt from Audio T Cardiff explored the subject after changing to Solidsteel furniture in his own system. Read Rack 'em up! - Dispelling the Myth Around Hi-Fi Furniture for a practical look at vibration, acoustic feedback and dedicated equipment support.
S3-A or S3-B?
S3-A
- Regular-size S3 amplifier stand
- Approximately 430mm wide
- Approximately 583mm deep
- Approximately 125mm high
- Best suited to larger and deeper amplification
S3-B
- Compact S3 amplifier stand
- Approximately 404mm wide
- Approximately 480mm deep
- Approximately 125mm high
- Smaller footprint for more compact equipment
Which Amplifier Stand Should You Choose?
The S3-A is the natural choice where the amplifier needs a larger and, particularly, deeper platform.
The Solidsteel S3-B provides a more compact alternative where the equipment comfortably fits a smaller footprint.
Choosing the smaller stand when it fits properly can reduce the amount of floor space occupied by the system, while the deeper S3-A gives larger power amplifiers much more room front-to-back.
S3-A With an S3 Equipment Rack
The S3-A shares the same design language as Solidsteel's conventional S3 racks and can be used alongside:
Matching shelf finishes and structural materials allow the separate amplifier platform to look like part of the same installation rather than an unrelated piece of furniture.
Who Is the Solidsteel S3-A For?
- Large stereo power amplifiers
- Monoblock amplifiers
- Heavy integrated amplifiers
- Class A amplifiers
- Valve amplifiers where dimensions allow
- Deep amplifier chassis
- Equipment requiring generous ventilation
- Large external power supplies
- Systems where the main rack is already full
- People wanting heavy amplification kept close to floor level
- Owners of S3 equipment racks wanting a matching amplifier stand
- Customers looking for Italian-made specialist equipment furniture
Who Is It Not For?
- Components whose support feet do not fit safely on the 430 x 583mm platform
- Equipment exceeding the current 120kg amplifier-stand rating
- Customers requiring a multi-level equipment rack
- Compact equipment where the smaller S3-B would provide a neater footprint
- Installations where safe amplifier ventilation cannot be maintained
- Customers wanting genuine wood veneer rather than polymer laminate
Key Features
- Solidsteel S3-A
- Regular S3 amplifier stand
- Dedicated power amplifier platform
- Designed and manufactured in Italy
- Approximately 430mm width
- Approximately 583mm depth
- Approximately 125mm overall height
- Approximately 7kg stand weight
- Current 120kg maximum load
- Approximately 265lb capacity
- 30mm MDF equipment platform
- Premium polymer-laminate surface
- Anodised aluminium supports
- Internal StratoCell damping
- Galvanised-steel frame and fixing components
- Powder-coated structural hardware
- ABS protective interfaces
- Adjustable M8 stainless-steel spikes
- Stainless-steel protective floor discs included
- Suitable for stereo power amplifiers
- Suitable for monoblocks
- Suitable for large integrated amplifiers
- Suitable for Class A amplification
- Suitable for valve amplifiers where dimensions allow
- Black finish
- White finish
- Walnut-effect finish
Frequently Asked Questions
What is the Solidsteel S3-A?
The S3-A is a low-profile specialist hi-fi stand designed primarily for power amplifiers, integrated amplifiers, monoblocks and other substantial audio components.
Why use a separate amplifier stand?
A dedicated amplifier stand can keep heavy amplification close to floor level, free space in the main equipment rack, improve ventilation and provide easier access for mains, speaker and interconnect cables.
How much weight can the Solidsteel S3-A support?
Solidsteel's current S3 specification rates its dedicated amplifier stands to support up to 120kg, approximately 265lb.
What are the Solidsteel S3-A dimensions?
The S3-A measures approximately 430mm wide, 125mm high and 583mm deep.
How much does the S3-A weigh?
Approximately 7kg.
Will my power amplifier fit on the S3-A?
Check the amplifier's width, depth, weight and support-foot positions. The platform is approximately 430 x 583mm and the current load rating is 120kg. All equipment feet should remain safely supported.
Can I use the S3-A with an amplifier wider than 430mm?
Potentially, provided the amplifier's support feet remain securely on the platform and the component is completely stable. Chassis width alone does not determine compatibility, so check the actual foot spacing carefully.
Is the S3-A suitable for a heavy power amplifier?
Yes. Heavy power amplification is one of the principal applications for the S3-A, subject to the 120kg load rating and the amplifier fitting securely on the platform.
Can the S3-A support monoblock amplifiers?
Yes. A pair of S3-A stands can provide individual platforms for left and right monoblock power amplifiers.
Can I use the S3-A with an integrated amplifier?
Yes. Large or heavy integrated amplifiers can benefit from the same low-level support, ventilation and cable access as separate power amplifiers.
Is the S3-A suitable for Class A amplifiers?
Yes where the dimensions and weight are compatible. The completely open space above the amplifier can be particularly useful for hot-running Class A designs.
Can the S3-A be used with a valve amplifier?
Yes where the amplifier fits safely. The open installation can be particularly useful for valve amplifiers that require substantial free space above their valves and transformers.
Can I use the S3-A for a large external power supply?
Yes. It can support other substantial hi-fi components provided their dimensions and weight are compatible with the platform.
What is the S3-A platform made from?
The platform uses 30mm ennobled MDF with a premium polymer-laminate finish.
What are the S3-A supports made from?
The support poles are made from anodised aluminium and are internally filled with StratoCell sound-absorbing damping material.
What is StratoCell damping?
StratoCell is the damping material Solidsteel installs inside the aluminium support poles to help control resonance within the structure.
Does an amplifier stand reduce vibration?
The S3-A is designed to provide a stable, damped mechanical support and to reduce unwanted interaction between the equipment and its surroundings. The audible effect will depend on the amplifier, floor, loudspeakers and wider system.
Does an amplifier stand improve sound quality?
Any audible change depends on the system and installation. The more universal benefits are secure support, improved ventilation, easier cable management and mechanical separation from other equipment.
Are the S3-A spikes adjustable?
Yes. The stand uses individually adjustable M8 stainless-steel floor spikes so it can be accurately levelled.
Does the S3-A include floor protectors?
Yes. Solidsteel includes stainless-steel S Series protective floor discs for use beneath the spikes on surfaces that could otherwise be marked.
Is the S3-A suitable for wooden or laminate floors?
Yes, provided the supplied protective floor discs are used beneath the spikes to avoid marking the surface.
Does the S3-A need assembly?
Yes. The stand requires assembly and should be accurately positioned and levelled before particularly heavy equipment is installed.
What is the difference between the Solidsteel S3-A and S3-B?
The S3-A is the larger regular amplifier stand at approximately 430 x 583mm, while the S3-B has a more compact footprint of approximately 404 x 480mm. The S3-A is therefore better suited to deeper and larger amplification.
Is the Walnut S3-A made from real wood?
No. The Walnut version uses a decorative wood-effect polymer laminate over the MDF platform rather than genuine timber veneer.
What finishes are available for the S3-A?
The S3-A is available in Black, White and Walnut finishes.
Where is the Solidsteel S3-A made?
The S3 Series is made in Italy by Solidsteel.
Related Solidsteel Products and Audio T Guides
Why Buy the Solidsteel S3-A From Audio T?
Amplifier stands are particularly dependent on matching the furniture to the equipment. Weight is only one consideration; chassis dimensions, support-foot spacing, ventilation, rear connectors and the intended position within the room all matter too.
Audio T can help check your amplifier against the S3-A, compare it with the more compact S3-B and advise on positioning, ventilation and integration with a wider Solidsteel rack system.
- Friendly specialist hi-fi advice
- Amplifier dimension checks
- Support-foot spacing checks
- S3-A and S3-B comparisons
- Power amplifier positioning advice
- Monoblock installation guidance
- Class A and valve amplifier ventilation advice
- Rear cable-clearance guidance
- S3 rack and amplifier-stand planning
- Spike and levelling setup assistance
- Floor-protection guidance
- Ongoing after-sales support
Contact your local Audio T store with your amplifier model if you would like help checking whether the Solidsteel S3-A is the right support for your system.