AUVA SPEAKER ISOLATORS

Bring your music to life


The Stack Audio AUVAs bring your music to life. The AUVAs are designed to do two things: hold loudspeakers rigidly whilst simultaneously absorbing vibration. They combine the best qualities of both spikes and isolators - without the drawbacks of either. Designed to be used on either hard floors or carpets, with the AUVAs direct sound waves are more precisely focused and cabinet vibrations are dissipated before reaching the floor.

Critic​ Reviews

HighFidelity Magazine review the AUVA EQs
Highfidelity Magazine reviewed our AUVA EQs, experimenting with them under several pieces of Hi-Fi & the beautiful Rega Planar 3 50th Anniversary turntable.
René Van Es of HiFi.nl reviews the AUVA EQs.
"The bad thing is that I will have to say goodbye to the CSA 1 and CSA 2 from Stack Audio. They work as promised and do so in an excellent manner. The price for a set is not prohibitive nor excessive compared to cheaper or more expensive competitor alternatives."
Jason Kennedy reviews the AUVA EQs
"If you want to get a better idea of what the components in your system are capable of, I suggest you give these a try"
Hans Beekhuyzen reviews the AUVA EQs
"I review many good products, but there is occasionally a product that blows me away, this is such a product."
Paul Rigby (The Audiophile Man) recently awarded the AUVA EQs a 9/10.
"Without the feet, the stereo image wandered all over the place. With the feet, the stereo image was fixed, locked straight ahead."

Absorbing vibration reveals more music

The Stack Audio AUVAs help bring your music to life. The AUVAs are designed to do two things: hold loudspeakers rigidly whilst simultaneously absorbing vibration. They combine the best qualities of both spikes and isolators – without the drawbacks of either. Designed to be used on either hard floors or carpets; with the AUVAs direct sound waves are more precisely focused and cabinet vibrations are dissipated before reaching the floor.

Negative vibrations can distort the sound we hear, emphasizing some frequencies more than others and masking detail and texture. Removing vibrations reveals more detail, more texture, and more transparency. The AUVA Isolators are designed to absorb cabinet vibrations before they are passed down to the floor whilst preventing room vibrations feeding back up into the speakers.

 

Precise delivery of detail

Holding loudspeakers precisely is critical to hearing spatial detail and the clarity and timing of musical notes. These are the essential elements that make focused listening a pleasure, holding your attention. It is why it is common to use spikes under loudspeakers which couple the speakers to the floor as well as protecting carpets. There is a problem with spikes alone as they allow vibration to pass right through in both directions – to and from the loudspeakers.

The particle vibration absorbing cells inside the AUVA loudspeaker isolators are contained within a totally rigid, machined-from-solid, aluminium case. This maintains the structural integrity of the loudspeakers and supports a wide range of speaker sizes and weights with absolute precision. This is effective whether you are using the AUVAs with carpet spikes or placing them directly onto a solid floor with the protective felt pads.

AUVA technology

Compliant isolators (for example, rubber, foam or springs) can reduce vibration but move and compress leaving your speakers held less rigidly. The AUVAs work differently: enclosed within the AUVA’s precision machined aluminium cases are multiple cells containing particles such as tungsten powder. Vibrations excite the particles, creating movement and collisions that dissipate the energy virtually instantaneously. Think of it like throwing a ball into soft sand – the sand absorbs the energy from the ball preventing it bouncing. This patent pending technology enables the AUVAs to remove masking vibrations over a wide frequency range, revealing more of the clarity in the musical recording.

AUVA

Particle Impact Dampening 

The AUVA benefit

AUVA loudspeaker isolators give you the best of both worlds, working like a natural extension to your speaker. They hold the speaker perfectly securely for precise reproduction of critical musical details combined with our patent pending AUVA technology that absorbs vibrations over a wide frequency range. Removing vibration reveals more timbre and texture in the music and, along with holding speakers rigidly, improves both timing and the spatial location.  Listening becomes easier, keeping your attention on the music.

CLICK HERE to read more about how the AUVAs will help your speakers reveal their true character.

AUVA 50, AUVA 70 & AUVA 100

The AUVAs are designed and manufactured in the UK by Stack Audio. There are three versions to choose from – AUVA 50, 70 and 100. They attach via supplied threaded bolts into the existing mounting holes on the underside of your loudspeakers or stand mount. Different thread sizes are available to suit. The AUVAs are supplied either with carpet spikes or protective felt pads for use on solid floors. Choose which option you require at checkout.

The vibration absorbing performance of the AUVAs adjusts with the version and size. The AUVA 50 contains 2 internal cells for effective vibration absorption. The AUVA 70 has 3 cells and the 100 has 5. Both the AUVA 70 and 100 include a central particle filled chamber for extra absorption capability. All AUVAs can be used with both stand mount and floor standing loudspeakers.

AUVA 50

Size: (D) 50mm (1.97 Inches) (H) 30mm (1.18 Inches) w/o spikes, bolts, and nuts.

For speakers weighing 275 Kg (606lbs) or less
Thread: ¼”-20, 3/8 -16, ½-13 M6-1.0, M8-1.25, M10-1.25, M10-1.5 other threads available on request.

Subsidized shipping.
30-day money back guarantee.

£438.00 for 8 isolators

AUVA 70

Size: (D) 70mm (2.75 Inches) (H) 30mm (1.18 Inches) w/o spikes, bolts and nuts.

For speakers weighing 275 Kg (606lbs) or less

Thread: ¼”-20, ⅜”-16, ½”-13, M6-1.0, M8-1.25, M10-1.25, M10-1.5, M12-1.25, M12-1.75

Free shipping UK, Europe, USA; subsidised shipping rest of the world.
30-day money back guarantee.

£840.00 for 8 isolators

AUVA 100

Size: (D) 100mm (3.93 Inches) (H) 40mm (1.57 Inches) w/o spikes, bolts and nuts.

For speakers weighing 275 Kg (606lbs) or less

Thread: ¼”-20, ⅜”-16, ½”-13, M6-1.0, M8-1.25, M10-1.25, M10-1.5, M12-1.25, M12-1.75

Free shipping UK, Europe, USA; subsidised shipping rest of the world.
30-day money back guarantee.

£1,240.00 for 8 isolators

Customer Reviews

Andy N. – UK
"The AUVA 70s replace the GAIA IIIs under my PMCs, leading to an obvious sound improvement."
Gregory G – USA
"What a dramatic change these AUVA 70 made on the KEF R5, much better clarity from top to bottom, no movement at all!"
Radoslav K. – Slovakia
"Noticeable improvement over the GAIAs. As if everything was cleared, all frequencies. Most notably the bass, which is less boomy. Even the mids are more organized."
Ted T. – USA
"What I'm now Hearing is some really solid improvements! The soundstage has become higher, deeper and wider. There is more air and precise imaging of the musicians and singers in the overall sonic presentation! Bandwidth response is excellent (bass-midrange-treble) and tonal accuracy and timbre realism has gone up several notches."
David A. – UK
"Although expensive they look and feel premium, in my room they improved on the sound of my Townshend Podiums that cost considerably more. A very satisfied customer. Highly recommended."
David A. – UK
"With the AUVA 50’s the bass was even more improved and tighter the sound had more richness i.e. you could practically imagine the persons fingers going down the fret board on the Guitar"
Neil M. – Bangkok
"I now get a proper wide, deep & high soundstage, within which, the isolators have added clarity. Anyway, don’t want to go on too much, I’m very happy with the AUVA100"
Nige H. – Germany
"The AUVAs really add a sense of space & depth (darker background) for the music to flow from. There is greater dimension overall the the tonal presentation is more refined."
P G. – Netherlands
"After a weekend I must say that there is indeed an improvement in the details and the sound image."
Gary Q. – Ireland
"I feel my speakers are seperated to everything else. Bass and tone has been promoted more. Detail has been finely polished in terms of mids and clashing highs."

Installation

AUVA isolators come with a choice of nine thread adaptors for the most common sizes: ¼”-20, ⅜”-16, ½”-13, M6-1.0, M8-1.25,M10-1.25, M10-1.5, M12-1.25 or M12-1.75. Simply select the adaptor that fits your speakers, included with your purchase. If you require a different thread size, alternative options are available upon request at no additional cost

Click here to find which thread adapter your speaker requires. 

Click here to download PDF installation guide

Set of 4 includes 

4 * Isolators

4 * Fixing adapters

1 * Adapter tool 

4 * Felt Discs 

12 * Spikes (3 per foot)

 

FAQ

All AUVAs can be used with both stand mount and floor standing loudspeakers. The 70 contains 3 internal cells for superior vibration absorption, whilst the AUVA 100 has twice the surface area and 5 cells. The larger size and extra vibration absorbing capacity of the AUVA 100 is for those who seek the ultimate level of performance from their isolators.

Yes, removable spikes are included. There are 3 removable spikes for each isolator.

Yes, protective adhesive felt pads supplied with the AUVA isolators for hard floors. Once fitted they cannot be removed but they feature holes to also allow carpet spikes to be fitted subsequently

No, the orientation of the absorbers has no correlation to its performance.

Thread options in-stock: 1/4-20, M6-1.0, M8-1.25, M10-1.5. Other thread options are available on request. Please contact us with details of your loudspeakers.

For information on speaker thread sizes and instructions on determining the thread size for your speaker, please click here.

Our 30-day money-back guarantee allows you to have 30 days to audition the isolators, starting from the day they arrive. You have 30 days to evaluate the product and decide if you would like to keep it or return it. The process ends when the parcel is collected. We arrange the collections and cover the costs for domestic collections. For international orders, we have great rates, so it is usually most economical for us to arrange a collection. The cost of the international collection will be deducted from the refund amount. If you decide to return the product, it must be in its original condition with all packaging and accessories included. If the return meets all requirements, the refund will be processed within 10 working days.

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