Auva Isolator - Stack Audio

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 recently published a review of our AUVA EQs, experimenting with them under several pieces of Hi-Fi & the beautiful Rega Plan 3 50th Anniversary turntable.

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."

Alan Sircom reviews the AUVA 100s for HiFi+

"In essence, the AUVA 100 does everything the Townshend Seismic Isolation Podium does for the sound but often does it better."

Paul Rigby reviews the AUVA 50s

"The 50s stand head over shoulders on anything I've heard on the market for similar or lower price points."

Hans Beekhuyzen reviews the AUVA 50s.

"Compared to spring and damper systems, there was a better projection of the instruments, better transients and lows."

Chris Kelly – The Ear

"What I heard immediately with Auvas in place was better definition between the instruments and slightly more tuneful bass, which benefitted both the voice, bass guitar and the drums."

Paul Rigby – The Audiophile Man

"Because of this almost mathematical precision, the supreme focus, the removing of even a hint of wooly bass or slightly meandering mids, everything sounded clearer now. Vocals, the actual lyrics, were more easily understood. Nothing got in the way of the delivery any more."

Hans Beekhuyzen reviews the AUVA 70s

"The AUVAs brought something magical to my setup; it further reduced time smearing, and the music was more involving, more immersive. This carried across to all the tracks that I played."

John Scott – HiFiPig

" I couldn’t believe the difference in what I was hearing; it was the audio equivalent of seeing an image in a camera viewfinder snap into focus when the lens adjusts. Not only was there more detail in what I was hearing but the positioning of voices and instruments, between and around the speakers was completely transformed."

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

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."

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."

Joerg J. – Germany

"After I started the first track...wow..! Absolutely fantastic and a much more positive influence than my last cable change! A big compliment to you and your AUVAs."

Dr. Augustin B. – Germany

"To my big surprise, the overall sound signature gained a deep background from nowhere. I was floored. Probably the resonance reduction towards floor & back gave the cone vibration the remaining extra movement to enhance the total effectivity of the speakers."

Pedro N. – Portugal

" I had my Revel Ultima Salon 2 with the Gaia1 and have now switched to the Stack Audio Auva's 100 and... I am really pleased, much better stage/image and the information clearer and more detailed, more natural sound."

Andreas H. – Switzerland

"The AUVAs added more three-demensionality, transparency and dynamics! My dynamic Naim components now run on steroids! Addictive! Highly recommended."

Ron W. – USA

"The AUVA Speaker Isolators added more transparency, ambiance/spatial detail and a laser focused image that you can follow precisely within the soundstage."

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

Which AUVA is best for my speaker?

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.

Do the AUVAs work on carpets?

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

Do the AUVAs work on hard floors?

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

Do the AUVA Absorbers have to face in a specific direction?

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

What thread sizes are available with the AUVA isolators?

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.

What is the process for determining the thread size of my speaker?

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

Are there detailed instructions for fitting the AUVAs to my loudspeaker?

Yes, Click here to download PDF installation guide

How does your 30-day moneyback guarantee work?

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.