AUVA EQ - StackAudio

AUVA Equipment Isolators

Silence the noise.

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AUVA eq CRITIC REVIEWS

“The spatial representation of the music becomes more tangible and..

“The Stack Audio AUVA EQ Isolators are a game changer...

“With the feet, the Stereo image was fixed, locked straight..

“With the EQs in place, there was a percussive thump..

“The AUVA EQs work as promised and do so in..

“If you want to get a better idea of what..

“It was different with the AUVA EQs. Sound became more..

“I review many good products, but occasionally there is a..

Removing vibrations

The AUVA EQ is an equipment isolator that combines two distinct vibration absorbing techniques working in tandem for the ultimate in isolation performance.

Hi-Fi equipment can suffer from vibrations known as microphony. This is when physical vibrations generate electrical signals inside sensitive components, causing audio interference. These vibrations can originate externally, from sources like speakers or traffic, and internally from components like transformers and spinning disc drives. Removing these vibrations reveals more detail and texture in music.

Overview

The AUVA EQ is an equipment isolator that combines two vibration-absorbing techniques for superior isolation. Hi-Fi equipment can suffer from microphony, where physical vibrations cause electrical signals in sensitive components, leading to audio interference. These vibrations may come from external sources like speakers or traffic, or internally from components like transformers. By eliminating these vibrations, the AUVA EQ enhances detail and texture in music, allowing your Hi-Fi system to perform at its best.

AUVA technology

AUVA is a patent-pending technology that uses particle impact dampening to reduce audio vibrations and enhance sound quality. It absorbs vibration energy and converts it into heat through friction and particle collisions. Imagine a ball thrown onto a hard surface, bouncing repeatedly until its energy is exhausted. Now, picture a ball thrown into a sandpit—it stops immediately as the sand grains absorb the energy without any aftershocks.

CSA and decoupling

Unlike loudspeakers which require precise positioning, Hi-Fi electronics benefit from being decoupled from the surface. Our Custom Silicone Absorber (CSA) is designed specifically for this purpose, featuring an advanced air-spring with a pocketed underside and sidewall holes for controlled absorption. This design enhances vibration absorption, delivering stable isolation and reducing resonance for clearer audio.

Combined technology

The AUVA technology and Custom Silicone Absorber (CSA) work together to deliver superior vibration control. The AUVA shell makes direct contact with the Hi-Fi equipment, converting vibrations into heat through particle impact dampening, while the CSA's air-spring design cushions and isolates the equipment from external forces. Though both absorb vibrations differently, it's the synergy between AUVA's energy conversion and CSA's cushioning that enhances stability and reduces unwanted vibrations. This combination results in clearer, more detailed audio performance by improving sonic accuracy and reducing interference.

Independent Measurements

Specifications

The EQs are designed to sit flush between Hi-Fi electronics and the equipment shelf or rack and are suitable for Hi-Fi sources, digital processors, and amplifiers.

AUVA EQs come in sets of 3 or 4. CSA inserts are available in 3 versions to suit different equipment weights. EQs are individually height adjustable up to 3mm.

Physical Specifications

Size

(D)50(H)28mm

CSA 1

0-4kg, (0-9lbs) per isolator*

CSA 2

4-10kg, (9-22lbs) per isolator*

CSA 3

10-15kg (22-33lbs) per isolator*

*All weights are per isolator, divide the weight of your HiFi by the number of isolators you will be using to ascertain which CSA insert you will require.

£198.00 inc. VAT

for 4 isolators

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All AUVA products are covered by a 60-day moneyback guarantee.

Frequently asked questions

Everything you need to know about the product and billing.

Should I use 3 or 4 AUVA EQs?

We recommend using the same amount of AUVA EQs that there are stock feet on the piece of HI-Fi you are targetting.

Where should I position the EQs?

If the stock feet on your item of Hi-Fi are easy to remove, we recommend placing the AUVA EQs directly where the existing feet were, this ensure that the manufacturers intended weight distribution is adhered to. If this is not an easy task, positioning them as close to the existing feet as possible is the next best step.

My piece of equipment is near the weight limit of the CSA 1, should I choose the CSA 2s instead?

All CSAs are optimized for their specific weight category, if you have a piece of equipment that is 15.8kg for example and are planning to use 4 feet, we would recommend using the CSA 1s.

Which way up should the AUVA EQ go?

The shell of the AUVA EQ should be making direct contact with your Hi-Fi, this allows for optimal coupling. The CSA (Custom Silicone Absorber) should sit on your shelf/rack, thus decoupling the piece of equipment from it.

I miscalculated the weight of my CSA inserts when I ordered, what shall I do?

If you have made a mistake during the order process, don’t worry! The CSA inserts are easily interchangeable and we are happy to swap the inserts over.

My Hi-Fi is very light and is producing micromovements on the EQ shell, how do I solve this?

We provide thin rubber disks with all EQ sets. If you are using Hi-Fi weighing <4kg, please use these disks between the shell of the EQ and the bottom of your piece of HI-Fi.

How do I calculate which CSA is needed for my piece of Hi-Fi?

Please refer to the specifications box above. Each CSA unit are optimized for different weights. Divide the weight of the targetted piece of HI-Fi by the number of Isolators that you are planning to use. (16kg/4 = 4kg) – CSA 1 optimized between 0-4KG > 4x CSA 1 required.

Where can I find the installation instructions for the EQs?

Yes, Click here to download PDF installation guide

How does your 60-day moneyback guarantee work?

You have 60 days to audition the isolators from the day they arrive. During this period, you can evaluate the product and decide whether to keep it or return it. Refunds will be processed within 5 business days of receiving a returned item. Please note that returns will be inspected, and any damages may result in a reduction of the refund value.

AUVA EQ Customer Reviews

Kurt L. – DK

Ernestine Anderson’s “Moonlight in Vermont” is from the ’60s, and like much of the music from that time, it is recorded without much compression and..

Andy N. – UK

“The most obvious improvement is that it’s more musical, followed by better separation, and bass might be improved, but I haven’t tested properly yet. The..

Ivica S. – Croatia

“Now a little about the sound – a better definition of the entire sound spectrum, a more adjusted bass that benefited vocals as well as..

Alun R. – UK

I have some wonderful new feet! However I am pleased to say that I have not had a surgical operation. Instead, I have purchased two..

David A. – UK

“The second set of AUVAs are a revelation under my Musical fidelity m6scd cd player compared to the Isoacoustics OREA Indigo isolators the same as..

Kevin B. – UK

“Pleased to say the EQs were delivered last week and they have since been installed and doing a great job. My intention was to remove..

Havard D. – Norway

“Immediately I noticed more separation, or focus, as Chesky Records say. Individual instruments were easier to hear, but also background vocalists. Especially the live version..

Ernesto D. – USA

“Thanks for getting these to me so quickly. They are truly worth it. There is less smearing, more definition, tighter bass and better spatial queues...

Ted S. – USA

“So my observation is similar to me being 55 and looking back at computer games I played in the 90s. When I look back at..

Adam A. – USA

“The AUVA EQs combine well with my other Isolators because each type has different tuning and strengths. The AUVA EQs sound best on my preamp..

John P. – USA

“I got the EQ’s and have them under my turntable. Wow, just an immediate improvement to the music. Much cleaner and less noise. Really amazing!”..

Klaus B. – Germany

“Our experiments brought us to the following conclusions: Using the EQs with source units (Oppo and TT) resulted in improvements which were clearly audible and essential...

Ron T. – Germany

“To apply the EQ’s directly under the casing of my preamp, I dismounted the original feet, as these almost have the same height as the..