Stack Audio AUVA 70 impressions and comparison to AUVA 50

I understand feet under a record player. On a cheap desk. But never heard any difference between spikes or isolators. .mine rpevious isolators are currently under my washmachine. Perfect

I wish you would say 'juicy' more often when describing bass. It is sublime.

Nice!! Have you done any reviews on mains power cables?

I am highly skeptical that these can do anything at all and nothing I have heard in this video convinces me otherwise. I would certainly be open to an experiment that measures vibration and some blind tests where listeners don’t know when the devices are being used but testimonials just don’t cut it with something like this.

I really like this channel.

Hobo with $6000 speakers in the background (before tax) by the way there's a Hifi store called hobo in the Netherlands

Excellent video, both production and content. A joy to spend time with.
Your "Final Thoughts" segment made so much sense. It's important to see the whole forest, not just a couple of trees.
For now, I have fashioned my own cheap isolation tweaks. I do believe in their performance improvements and am considering investing in these but ... They are expensive.
Cheers from Canada

Every time I think it can't get any crazier 🙃

Men dont do this. I am going to be in debt for purchase stack audio auvas. I look b quality sets in Web since june. Could they do another favor or campaign for your followers?

As an economical approach to isolation may I suggest putting a paving slab under your stands? You will alter the height by about 2.5 cm but if that bothers you can adjust for it by simply sitting a little straighter in your listening position.

The big ones come in handy if you like to play hockey.

Ive tried isolation under different components. My results:

Power amp - no difference

Pre amp and DAC - small but nice upgrade, especially in the bass

Speakers - pretty huge difference and possibly the best upgrade for the money

Hope this helps

🤗GREAT STORY ❤️ IT !!! SO HAPPY FOR YOU SRBOLJUB 💚💚💚

Good advice. Although isolation feet would stay with you, even when you upgrade speakers. Have you tried the Viablue UFO XL feet? They elevated my (rather cheap, older) floorstanders to a next level and the base went from boomy to full and controlled.

This is exactly what I needed to know! Have been considering getting these. Another great review, and relevant comparison. So, can I have your Auva 50's now that you don't need them? jk 😂

I want to make it simple prove it to me and how😊

I bought IsoAcoustics Mini Pucks to decouple my speakers (Buchardt P300) from stands. It was the best investment in my system – midbass got punchier and midrange clearer due to better midrange and midbass separation. Good quality isolation pads, IMHO, is better investment than, e.g., fancy speaker or interconnect cables.

Excellent review. Cool runnings

I would not consider buying these due to the extremely high price

@iiWiReviews
In the video description you state that, "This is my impression." And that's really where this "review" ends.

All of these flowery subjective words that you have used to describe the "differences" in what you THINK you heard (remember these are your "impressions") are 100% related to the FREQUENCY RESPONSE (which include resonances) of the system At Your Listening Position, and that also includes any supposed differences in the imaging and soundstage as well, which rely completely on the Amplitude response of the system matching as closely as possible between the Left & Right speakers...that's it!

SO, all it would take to SUBSTANTIATE these supposed differences that you claim you "heard" is a simple in-room measurement of the Amplitude Response (frequency response) of the system using a $100 calibrated USB measurement microphone (i.e. miniDSP UMIK-1) placed on a $40 microphone stand that isn't moved or changed between measurements combined with the FREE Room EQ Wizard (REW) software, which will allow you to take those measurements and demonstrate those supposed REAL WORLD changes.

But curiously, we never see any such measurements by the manufacturers of these products, OR from 99% of the "reviewers" of said products, LOL.

IMO, considering the THOUSANDS of Dollars ALL OF US have invested in our HiFi setups, and providing that you already own a basic laptop PC, investing just $140 in a system that will allow you to perform objective measurements is 100% worthwhile, especially if you are a "reviewer".

Even on Stack Audio's "Technology" page of their website, they describe "how" their "technology" works, BUT NEVER provide ANY simple Objective Data to back up their claims! ...

For instance, all it would take in order to demonstrate that these products actually do what they say in regards to converting vibrational energy to low-level heat in order to "isolate" one object from another is to attach simple, inexpensive accelerometers to both the top and bottom sections of these "isolation feet" and provide the measurements that show the differences between them!

This is incredibly SIMPLE to do, yet NO such measurements or demonstrations are provided. Hmmm??? I bet if they did, far fewer people would purchase these way overpriced products that literally do little, if anything, to actually "isolate" in any MEANINGFUL way.

FFS, HOW MANY YEARS will it take thick-skulled HiFi enthusiasts and "audiophiles" to finally ACCEPT that NONE OF US can actually rely on our Ears & Brain to Accurately & Reliably discern REAL Audible Differences in these types of SIGHTED Listening Tests?!?!?!

^This has been proven Beyond All Doubt MANY years ago in multiple tests by multiple accredited researchers and institutions!

IF you want to educate yourself and read just ONE short article that will take just 5 minutes of your time, I URGE EVERYONE to search for and read Sean Olive's short blog article titled, "Audio Musings by Sean Olive: The Dishonesty of Sighted Listening Tests". (seanolive blogspot 2009 04)

IME, $463 will go MUCH, MUCH FURTHER in actually IMPROVING the response and enjoyment of your audio system if you implement proper ACOUSTICAL ROOM TREATMENTS to help mitigate the Acoustical Issues in your listening room, especially if you can utilize DIY techniques and acoustic treatment solutions!

I generally enjoy the product reviews on this channel, but my finger is this >|< close to hitting that UNSUBSCRIBE button! :(

I completely agree with your thoughts on purchasing these isolation footers. I have $5K USD speakers and feel to really better them, I would need to invest $10K+ in a new set of speakers. I went ahead and purchased the AUVA 70's last week and hoping for a small upgrade in sound. Nice review.

On supended wooden floors with carpets what's better... pucks/discs or spikes???

Did you tried the Auva with the Platimon VC1? And still hear the improvement? Vibration Control seems to be a key part of that speaker.

Thinking about buying the Platimon but thought maybe their good performance is based on the vibration control. Feared that there wouldnt be much improvement for an Auva user.

Complete fraud. Next.

For half a year or a bit longer, there have been Auva 50's under my heavily modified AudioPhysics. Because these pucks are not cheap, I started with the 50's and also because import from the UK was expensive at that time (import is now different). Was there an audible difference? Yes, definitely. And now I can reach under the base of the speakers with the vacuum cleaner. That was not possible before. With the Auvas it looks a lot better too ! When everything is cleaned, my wife is out of the house for a course and I open a top wine and have had 2 large glasses within half an hour, the AudioPhysics with Auvas sounds even more heavenly.

Don't you think it would NOT that difficult to make a similar looking set-up for yourself and get a similar sound preproduction to this Aura 50/70 at a fraction of the price?

I’m often amused by the Pavlovian response of the “if you can’t measure it, it can’t exist “brigade. Whether it’s equipment supports, cables and interconnects, fuses or even more esoteric tweaks, it’s always dismissed out of hand. You have clearly explained what you have heard, but that’s not good enough for them.
My experience with Stack Audio products confirms your description. I had started off with the addition of their EQs to the CD transport, and the results have convinced me to install them under the rest of the equipment. I have also placed the 70s under my loudspeakers and the 50s under my subwoofers.
Again, the results were obvious, particularly if you allow for the particles to settle in.
All I can say, trust your ears and if you derive more enjoyment from the increased musicality of your system, this is all that matters.

"Stack Audio AUVA 70 vibration isolation feet go for £362 ($463) per set of eight"... this is for the auva 50 not 70!😉

I love your sense of humor, and you do it with a straight face. Yet, its not too much. Good video as usual. Thank you

I think that it is a matter of test. My Klipsch the Fives sound better with a smaller isoacoustic stands, while the Elac UBR62 definitely need big stands. But I have a better example - I was auditioning a system of Arcam SA20 with PMC Prodigy 5 - the Prodigy(s) have own spikes AND these system sounded amazing to me - huge, balanced, energetic and natural. And the sales person installed a certain type of acoustic dampers (similar to what you test) just below the spikes of the tower speakers - he said that will make it even better. Well, for me that was exactly the opposite - the effect was negative, according to me. Yes, the instruments and the vocals got slightly better defined and contoured (I think because the dampers eliminated even more the vibrations from the floor and the floor reflections) BUT the soundstage got absolutely funny - I started hearing the piano in the sky, the drums got behind me and the vocals were already not a person standing there but a ball that was bouncing forth and back. So, trial and test is the solution for what is best for our ears..

I'm willing to believe they improve sound, but they're more than I'm prepared to spend, having tried a number of products over the years, albeit not these. For my stand mount speakers I now use the approx. £5 for eight gel "Pro" speaker isolators bought on ebay.

They tighten up the sound and have the great advantage that they're small and stick very well to the bottom of my speakers without any kind of adhesive, but are easily removed if required. So well that I can use them in my secondary nearfield system with very short (1" high) tilt-able stands with my speakers pointing down c.10 degrees. Also, I place tweeters at the bottom. - this usefully lowers the sound image for me. They're robust, not at all squishy, and durable. For a fiver, they're very cheap to try. Don't think you'd be disappointed. IMHO, they're definitely an improvement on simply plopping speakers directly on top of stands.

I went from IsoAcoustics Gaia II to Auva 100 under Wharfedale Elysian 2 speakers, and it is a very noticeable improvement. Highly recommended

What about the subwoofer?

It sais "Set of 4 includes 4 * Isolators, 4 * Fixing adapters, 1 * Adapter tool, 4 * Felt Discs, 12 * Spikes (3 per foot)" and yet you have to choose between Felt or Spikes in the shop?

So basically you get better isolation which means less vibration that distords the original signal which means better soundstage and seperation.

You give good advice
I’ve got the Auva 100 s
Went from the top Gaias
Great improvement

if the 50 can handle the load, will the 70 still out perform the 50?
To my understanding, the weight of the speaker needs to match the total load capacity of the isolator.

I’ve tried many isolation device for my audio gear and for the most part only thing they isolated was my money from me 😂

Nice balanced review and recommendations thanks Srbo.

I want some measurements to back up these subjective observations or at least a double blind test . Otherwise with all the respect I have to assume that it is all audio placebo.

Very good review and very good points about the diminuishing returns and prices of upgrades. I for one have a personal rule of always upgrading 2 tiers up so that's a worthy improvement. Meaning II'm at a point of looking at 5k a component as "the last upgrade possible" as I also don't have a room where more than that can be apreciated for the extra they might give. That's why I found it justified to invest in Stack Audio products and my only regret is not having done so earlier. I had Gaia feet some time ago but this is way better. I think my biggest shock was their eletronics EQ feet, no review or previouse experience prepared me for such a major impact on sound quality.

I wish you would review the Quloos MUB1 and compare it with other (semi) portables like Mojo 2 and xDuoo XD05 PRO 🙏
I think you may not love it.. Still very curious to hear your thoughts

Kudos and Awesome Review!

An interesting realistic perspective, I am retired & have an all valve system driving Quad 57's sitting on Rupert stands, it had/has high resolution of fine detail a friend (deceased) used me amongst others for 25 years to test his own hand made cartridges & accessories. Using Stack Audio 30 day money back offer I bought Auva 50's they were so good within days I got Auva 70's shortly after Auva100's the sounds from my Quad 57's have raised to another level with bass better than any stacked Quads I have heard because it is layered not just one note bass the mids & treble have stunning detail without harshness.everything moree relaxed If you can also try Auva EQ's under amps & DAC & LPSU as you point out it would have cost many thousands to reach this level otherwise

I have some 50s and they make a great improvement.
I trialled some Gaia’s and my speakers sounded like radio quality.
They do a refund policy so easy to try.

Good products just priced way too high IMHO

Damnit, you made me realise I didn't check for wine and cheese cellars when I interviewed my wife!