Stack Audio is a British hi-fi brand with a narrower focus: to eliminate unwanted vibration and electrical interference in audio and speaker systems. It currently has a footprint of AUVA speaker isolators, equipment isolation products, vinyl accessories, and SmoothLAN network products.
Stack audio products are not used as a traditional speaker or amplifier, but as a system-support component for the listener who is building or upgrading a hi-fi system. It is dependent on the source of vibration/ noise that you are trying to control, the weight and mounting options of your equipment, and the rest of your audio system.
When looking to enhance isolation but not replacing the main components, many buyers will look at stack audio. The company says it has developed its products and work out of the UK, and that they are meant to be used to provide more detail about an existing system, not to alter its fundamental nature.
Featured Answer: What Is Stack Audio?
Stack Audio is a UK hi-fi manufacturer that develops products for vibration control, equipment isolation, vinyl playback, and network-audio noise management. Its product families include AUVA speaker and equipment isolators, SERENE turntable accessories, and SmoothLAN network devices.
Stack Audio Quick Facts
| Feature | Details |
| Main focus | Hi-fi isolation and signal support |
| Main product families | AUVA, SERENE, SmoothLAN |
| Speaker products | AUVA 50, AUVA 70, AUVA 100 |
| Equipment options | AUVA EQ and AUVA Platform |
| Vinyl options | SERENE Mat and Stabiliser |
| Network options | SmoothLAN products |
| Manufacturing | Designed and assembled in the UK |
| Best for | Hi-fi users refining an existing system |
| Main keyword | stack audio |
Before buying stack audio products, check compatibility carefully. Speaker weight, thread size, equipment dimensions, floor type, turntable setup, and network configuration can all affect which product makes sense.
What Makes Stack Audio Different?
One of the things that makes stack audio interesting is that it is very narrow in scope, focusing on things that aren’t things you think of if you have a hi-fi. Many of its products aim at vibration or electrical noise in the vicinity of the source, the amplifier or the loudspeakers rather than on replacement of those components.
Another reason is system flexibility: stack audio products can be used under speakers, under electronics, with vinyl playback equipment or in a network-audio chain.
It’s likely that if you can find a real system issue you’ll get the best results for stack audio. A vibration-control product is most helpful if the mechanical energy is impacting the equipment, while a network product is designed for another section of the playback chain.
Read Also: Vandersteen Speakers
Main Types of Stack Audio Products
The current stack audio range covers several categories, each designed for a different part of a hi-fi system.
AUVA Speaker Isolators
The speaker-isolation range of the company is called stack audio, it can be found in three different types: AUVA 50, AUVA 70 and AUVA 100, with other variations in the number of internal cells and uses.
These stack audio isolators fit into selected loudspeakers or stands with threaded adapters, providing audio isolation. Carpets and solid floors are options; installation will depend on the speaker and the floor underneath them.
Listening with floor-standing or stand-mounted speakers, the audio AUVA products are suitable for controlling unwanted energy while they provide a solid base.
AUVA EQ Equipment Isolators
In this product family, the AUVA particle-based concept is combined with a compliant silicone element for electronics and other hi-fi equipment, but not for loudspeakers.
In reality, audio equipment isolators are mounted on supported equipment. Correct positioning and load distribution is important as isolation devices must operate within its specified range of weights.
This class could be of interest to those who wish to control the vibration of the stack when using source equipment, amplifiers or other delicate hi-fi equipment.
AUVA Platform
The AUVA Platform is an isolation solution for equipment, bigger than the AUVA Platform Mini, and it has a base that incorporates various AUVA particle cells.
This stack audio product is designed for customers who’re looking for a combined system beneath a component-instead of a number of part isolators.
Before adding stack audio isolation under a component, as with any platform, it is important to check the equipment footprint, total weight, amount of available shelf space, and ventilation.
SERENE Vinyl Accessories
There are currently products available from stack audio such as a record mat and record stabiliser, which are all designed for turntable users, in the SERENE range.
The SERENE Mat is a flexible structure with tuned sprung pads which absorb micro vibration. With vinyl listeners, this is a method to prop up the record as it plays.
When using stack audio vinyl accessories, be sure the turntable manufacturer approves the additional thickness of the mat or stabiliser weight. Some turntables may experience vertical tracking angle changes, suspension behavior changes, or bearing loading changes when the platter changes.
SmoothLAN Network Products
Currently, stack audio includes network filtering/regeneration products in this family of products.
With streaming products, the audio network products are separate from AUVA isolation. They are designed for network-audio configurations which include users wanting to minimise unwanted electrical interference in or around the digital chain.
When choosing a network accessory, consider it as a part of the entire signal path and for stack audio, be sure to verify port requirements, power requirements, and compatibility before installation.
Read Also: Vinshine Audio
How Stack Audio Approaches Vibration Control
Audio being generated by mechanical vibration can originate from loudspeaker cabinets, floors, racks, transformers, footfall and other environmental sources and is a major concern of stack audio.
The AUVA (Audio Vibration Attenuation) principle utilized in stack audio is vibration dissipating cells filled with particles inside. The number of these cells varies between different AUVA models, which can be an explanation for the various sizes and applications of the products.
The object of stack audio isolation is not to lower the sensitivity of a component or to allow it to be more lightly supported. Speaker products are built to maintain a secure position of the loudspeaker and to be able to counteract any unwanted vibration.
Speaker Isolation and Floor Type
When installing stack audio speaker isolators, the type of the floor is important. Carpeted rooms require different contact needs than rooms with wood, tile, laminate or stone floors.
To protect hard floors, use spikes designed for hard floors and to protect carpeted floors, use spikes designed for carpeted floors.
Prior to installation, ensure the stack audio isolators are level and that each contact point is firmly holding the speaker. Imbalanced loading decreases stability, and may make fine adjustments more difficult.
Choosing Between AUVA 50, 70, and 100
The three main AUVA speaker-isolator versions are designed for different requirements. stack audio identifies the AUVA 50 as the compact option, while the 70 and 100 add more internal particle cells.
When choosing stack audio AUVA isolators, do not select only by price. Check loudspeaker weight, the manufacturer’s recommended application, the thread needed under your speaker, and the number of isolators required.
A heavier or larger speaker may call for a different stack audio model than a compact stand-mount design. Compatibility should be confirmed before ordering.
Thread and Mounting Compatibility
Many loudspeakers use threaded spike inserts, but the thread size is not universal. stack audio supplies different adapter options for its speaker isolators.
Before buying stack audio isolators, identify the exact thread used by the speaker or stand. Guessing can lead to an adapter that does not fit or does not seat correctly.
If the loudspeaker manufacturer provides a manual, use that specification when choosing stack audio mounting hardware.
Using Stack Audio With Stand-Mount Speakers
Stand-mount speakers can also benefit from careful vibration management, but the full structure needs to be considered. stack audio isolators may be fitted at the base of compatible speaker stands when the hardware and load are suitable.
When using stack audio with stands, check the combined weight of speaker and stand, the stability of the base, and the correct thread size.
A tall stand with a small footprint should remain stable after any stack audio accessory is installed. Safety and resistance to tipping are more important than chasing a small setup change.
Using AUVA With Floor-Standing Speakers
Floor-standing speakers can transfer mechanical energy through their cabinets and mounting points. AUVA products are designed to replace conventional spike-style interfaces on compatible speakers.
Installation should be carried out carefully because larger loudspeakers can be heavy. Support the cabinet safely and never place your hands or fingers beneath unstable equipment while changing feet.
After the isolators are installed, recheck speaker position, toe-in, cabinet level, and listening distance. Changing the support system can alter speaker height slightly, which may affect the listening geometry.
Equipment Isolation Setup
Electronics may sit on racks, shelves, platforms, or furniture, and every surface behaves differently. Equipment-isolation products are designed to sit between a component and its supporting surface.
Position isolation feet so the component remains stable and the total weight is supported evenly.
For equipment with a large transformer or unusually heavy components on one side, placement can require extra attention because the center of mass may not be exactly in the center of the chassis.
Never block ventilation holes when adding platforms or isolation devices underneath amplifiers and other heat-producing electronics.
Turntable Considerations
Turntables can be sensitive to vibration, footfall, loudspeaker energy, and changes in their support structure.
SERENE products focus on the record and platter area. The company’s record mat measures 3 mm high and is designed for 7-inch, 10-inch, and 12-inch records.
Adding a replacement mat may alter record height slightly. On tonearms with adjustable vertical tracking angle, users may be able to compensate for the difference.
With a record stabiliser or weight, always check the turntable manufacturer’s recommendations first. Some suspended decks or bearings may have specific limitations.
Network Audio Considerations
A modern streaming system may contain a router, network switch, streamer, DAC, server, and several power supplies.
Network-filtering products are intended to sit within this digital infrastructure rather than beneath a speaker or component.
Before adding new network hardware, draw a simple map of the existing Ethernet path. This makes it easier to determine the correct installation point and identify whether the new device changes connectivity.
Use familiar recordings during testing. Keep the same source file, streaming service, volume level, and system settings whenever possible.
Why Isolation Can Matter
Loudspeakers deliberately create mechanical energy, but not every vibration in a listening room is useful.
Cabinets, floors, equipment shelves, and nearby objects can vibrate along with the music. The effect depends heavily on construction, placement, volume, and room conditions.
Isolation products attempt to control unwanted mechanical behavior without stopping the speaker from doing its main job.
The amount of audible difference can vary between systems, so careful testing is more valuable than assuming the same result will occur in every room.
Importance of Speaker Placement
Isolation accessories cannot replace good speaker positioning.
Start by setting the correct distance between the speakers. Then experiment with distance from the front wall and side walls.
Toe-in can affect high-frequency balance and stereo imaging. Small changes may have a noticeable effect at the listening position.
Once placement is stable, adding isolation becomes easier to evaluate because fewer variables are changing at the same time.
System Matching
No accessory operates independently from the rest of a hi-fi system.
A system on a suspended wooden floor can behave differently from a similar system installed on concrete.
Speaker weight, cabinet construction, rack design, floor covering, listening level, and room dimensions may all influence the result.
Treat isolation as part of complete system setup instead of assuming that one accessory automatically solves every sound-quality issue.
Installation Tips
For a safe and repeatable installation:
- Confirm product compatibility before ordering.
- Check the total speaker or component weight.
- Identify mounting thread sizes correctly.
- Support heavy speakers securely during installation.
- Choose the correct carpet or solid-floor interface.
- Level the speaker after fitting new feet.
- Prevent cables from pulling equipment sideways.
- Recheck speaker position after height changes.
- Test with recordings you already know.
- Change one system variable at a time.
Following these steps can make comparisons easier and reduce installation problems.
Listening Tests
Use several familiar recordings when evaluating an isolation or network accessory.
Choose tracks with vocals, bass, drums, acoustic instruments, and clear stereo placement.
Listen for changes in bass definition, vocal position, image stability, instrument separation, decay, and overall timing.
Try to keep playback volume identical during comparisons. Slightly louder playback can often appear more detailed or exciting even when nothing else has changed.
Avoid making conclusions from only a few seconds of music. Use several tracks and repeat the comparison where practical.
Advantages
One advantage of the brand is that its products address several supporting areas of a hi-fi system without requiring the user to replace an amplifier, DAC, source, or loudspeaker.
The AUVA family also provides more than one speaker-isolation option. This allows buyers to select a model according to the size and requirements of their system.
Its product range also extends beyond speakers into equipment isolation, record playback, and network-audio applications.
Another potential advantage is UK design and assembly. The manufacturer states that its products are designed and assembled in-house in the UK.
Limitations
Hi-fi accessories can be highly system-dependent.
A product that produces an obvious change in one room may produce a smaller difference in another room because floor construction, equipment design, speaker placement, and listening conditions differ.
Compatibility also matters. Speaker feet can require specific thread adapters, platforms need enough shelf space, and turntable accessories can alter setup geometry.
Cost should also be considered against other potential upgrades.
If speakers are badly positioned, furniture is rattling, or the room has severe acoustic problems, correcting those issues may be a more logical first step.
AUVA vs Basic Speaker Spikes
Traditional speaker spikes use a small contact point between the speaker and the floor.
AUVA takes a more complex approach. The isolators combine mechanical speaker support with internal particle-filled cells intended to dissipate unwanted vibration.
The practical value of this difference depends on the speaker, floor, listening level, and room.
Users should also consider whether replacing the original spikes changes speaker height or requires a different mounting adapter.
AUVA vs Generic Isolation Pads
Generic foam or rubber pads can be inexpensive and useful in many audio applications.
Purpose-built speaker isolators use a different construction and mounting approach.
Threaded installation can provide a more integrated connection to a compatible loudspeaker or stand, while basic pads normally sit freely underneath the cabinet.
Before choosing either approach, compare stability, supported weight, product height, floor protection, adjustability, and available space.
AUVA 50
AUVA 50 is the compact model in the speaker-isolator family.
According to the manufacturer, it contains two internal particle cells. The 70 uses three cells, while the 100 contains five.
The smaller design can make the 50 suitable for systems where the applicable speaker weight and mounting requirements fall within its intended specification.
Always check current product specifications rather than assuming that physical size alone determines compatibility.
AUVA 70
AUVA 70 sits between the 50 and 100 in the speaker-isolation range.
The manufacturer describes it as suitable for stand-mount and floor-standing speakers and offers threaded adapters along with floor-contact options.
For many buyers, the decision between models comes down to speaker weight, physical design, mounting threads, and the manufacturer’s application guidance.
AUVA 100
AUVA 100 is the larger model of the three commonly listed speaker isolators.
It uses five calibrated AUVA cells and can be fitted to compatible stand-mount or floor-standing loudspeakers.
As with the other models, users should verify the required adapter and floor interface before ordering.
Heavy floor-standing speakers should always be handled carefully during installation.
AUVA EQ
AUVA EQ is intended for equipment rather than speaker cabinets.
The design combines particle-impact damping with a compliant silicone-based element.
Possible applications include supported source components, electronics, and other hi-fi equipment where mechanical vibration is a concern.
Users should follow the manufacturer’s current loading and placement guidance because equipment weight can be distributed unevenly.
AUVA Platform
The Platform combines isolation feet with a larger base.
The current product description states that the base contains 35 AUVA particle cells.
A platform-style solution can also simplify placement for equipment that does not have convenient locations for individual isolation feet.
Measure shelf width, equipment width, height clearance, and ventilation space before ordering.
SERENE Record Mat
A turntable mat forms the interface between the platter and the record.
The SERENE Mat uses specifically formulated silicone and four tuned sprung pads. The manufacturer lists it as compatible with common 7-inch, 10-inch, and 12-inch records.
Turntable users should remember that changing mat thickness may alter the vertical relationship between the record surface and tonearm.
Check cartridge setup after installation when necessary.
SmoothLAN Range
Network audio is now common in modern hi-fi systems.
Streaming may involve local servers, subscription services, Ethernet networks, network switches, and dedicated streamers.
SmoothLAN devices are aimed at this part of the playback chain.
The company’s current range includes a Network Filter and Regenerator alongside its mechanical-isolation and vinyl products.
Network accessories should be installed according to their specific connection and power requirements.
Older Digital Products
The company has also produced dedicated digital-audio products in the past.
For example, the LINK II was developed as a USB network bridge/reclocker designed for streaming audio and use with an external DAC. It is currently marked as discontinued on the manufacturer’s website.
This is useful to know when shopping for used equipment because older product names may still appear on marketplaces or forums.
Always distinguish current products from discontinued models before purchasing.
Building a Balanced Hi-Fi System
Accessories work best when the basic audio system is already configured properly.
Start with loudspeaker positioning.
Make sure the listening chair is placed sensibly relative to the room.
Check that left and right speakers have similar surroundings where possible.
Confirm that amplifier power and speaker impedance are compatible.
Make sure source equipment is operating correctly.
After these basics are addressed, vibration isolation and other refinements become easier to assess.
Room Acoustics Still Matter
Speaker isolation does not remove reflections from walls, ceilings, windows, or furniture.
A highly reflective room may still sound bright or unfocused even with carefully installed equipment.
Rugs, curtains, bookshelves, absorbers, diffusers, and furniture placement can change room behavior.
Bass problems may also require changes to speaker position, listening position, or acoustic treatment.
The best approach is to treat isolation and room acoustics as different parts of overall system setup.
Power and Cable Management
Mechanical isolation is only one aspect of system organization.
Keep power cables and signal cables arranged carefully.
Avoid putting unnecessary strain on connectors.
Heavy or stiff cables should not pull lightweight components off-center.
Check that plugs fit securely and that cables are not damaged.
Do not buy expensive cable accessories as a substitute for fixing obvious electrical faults or grounding problems.
Who Should Consider These Products?
These products may suit listeners who already have a hi-fi system they enjoy and want to refine its mechanical support or network environment.
They can also appeal to users with large floor-standing speakers, dedicated equipment racks, vinyl playback systems, or high-quality streaming setups.
Listeners who enjoy careful A/B testing may find it easier to determine whether a particular accessory provides a worthwhile improvement.
The key is to match the product with a specific need rather than buying solely because it is marketed as an upgrade.
Who May Want Something Else?
Someone still using poorly positioned speakers may want to address placement first.
If a shelf or cabinet is visibly unstable, correcting the furniture can also be a higher priority.
Users wanting a dramatic change in tonal balance may need to consider speaker selection, room acoustics, equalization, or amplification instead.
Isolation products are primarily supporting components and should not be confused with traditional tone controls.
Read Also: 6 1/2 Speakers
Buying Checklist
Before ordering, check:
- The exact problem you want to address
- Speaker or component weight
- Required mounting thread
- Number of isolators required
- Floor type
- Speaker stability
- Equipment dimensions
- Available rack space
- Ventilation requirements
- Turntable compatibility
- Network connection requirements
- Current product specifications
- Installation instructions
- Return conditions
- Whether basic system setup is already optimized
A careful checklist reduces the chance of buying an accessory that does not suit your equipment.
Final Thoughts
This British manufacturer has developed a specialist range around vibration control, record playback, and network-audio support.
AUVA covers loudspeaker and equipment isolation, SERENE focuses on vinyl-related accessories, and SmoothLAN addresses the network side of digital playback.
These products make the most sense when a buyer understands what part of the system they are trying to improve.
Before purchasing, confirm speaker weight, mounting threads, component dimensions, floor conditions, turntable requirements, and network connectivity.
Most importantly, remember that accessories work alongside good speaker placement, stable furniture, sensible room acoustics, correct system matching, and careful setup.
FAQs
What does the company make?
It produces specialist hi-fi accessories focused on speaker isolation, equipment vibration management, vinyl playback, and network-audio applications.
Where is the company based?
The manufacturer is based in Devon, England, and states that its products are designed and assembled in the UK.
What are AUVA speaker isolators?
AUVA isolators are devices fitted underneath compatible loudspeakers or stands. They use internal particle-filled cells intended to dissipate unwanted vibration.
What are the main AUVA speaker models?
The main current speaker-isolator options are AUVA 50, AUVA 70, and AUVA 100. They contain two, three, and five internal particle cells respectively.
Can AUVA isolators be used with stand-mount speakers?
Yes. The manufacturer lists its speaker isolators for compatible stand-mount as well as floor-standing speaker applications.
Can they be installed on carpets?
Yes. Carpet spike options are available, while protective contact options can be used with appropriate solid-floor installations.
Do I need to know my speaker thread size?
Yes. The isolators use threaded mounting adapters, so you should identify the correct thread before ordering.
Does the company make products for turntables?
Yes. The SERENE range includes vinyl-playback products such as a record mat and stabiliser.
What is the SERENE Mat?
It is a 3 mm turntable mat using silicone construction and four tuned sprung pads designed to manage micro-vibration at the record interface.
Does the company make products for streaming systems?
Yes. The SmoothLAN range includes products aimed at network-audio systems.
What should I check before purchasing?
Check weight, dimensions, thread compatibility, floor surface, installation requirements, turntable specifications, network connections, and the current manufacturer’s guidance for the exact product.
