Categories: Isolation

A Survey – The Thing About Mechanical Vibration Isolation…

Many audiophiles throw their equipment and speakers on expensive racks, Swedish butcher blocks, and spikes assuming “it’s better than nothing.” But is it? 

You’ve probably seen this demo from IsoAcoustics:

Having purchased the IsoAcoustics Aperta myself, I could vouch for its performance. Without the Aperta, the sound was muddied and flat. I also purchased one for my subwoofer and it worked miracles in regards to bass definition. Both are very affordable as well.

In general, vibrations are just bad for audio. Better dampening gets us to a steady state quicker. This is especially the case for turntables.

But what if these components weren’t even voiced or designed with a specific type of isolation – or none at all? Unless the speaker and electronics designers tell us themselves, there’s no way to know. I know for a fact some don’t use any isolation at all while designing their products.

So does that mean we’re mucking with the sound when we throw foam balls under them?

The Setup

I was bored a few months ago and wanted to experiment a bit with effects of isolation of the Chord TToby stereo amplifier.

I had a bag of random isolation products of varied designs and materials.

  • Gingko Mini-ARCH – 12 pieces for $299.00
  • SVS SoundPath Subwoofer Isolation – $49.00 for a 4-pack
  • Symposium Svelte Shelf – $349.00 for a 12″ x 14″
  • Synergistic Research MiG 2.0 – $249.00 for a set of 3
  • Synergistic Research MiG 1.0 – $150.00 for a set of 3
  • Solid Tech Discs of Silence – $350.00 for a set of 4
  • A bag of Flaming Hot and California Pistachios

The Experiment

The following impressions were compared vs a naked desk with no isolation.

Symposium Svelte Shelf

  • Much better layering of the sound
  • Improved timbre accuracy
  • Fuller and more musically shaped
  • More slam and dynamic presence
  • More midrange presence and sweetness

Nothing negative to say here. It strikes a fantastic balance between clarity, resolution, and warmth.

Solid Tech Discs of Silence

  • Trades meat and body for resolution. Venue and studio acoustics are much more apparent vs most of the isolators in this comparison.
  • Decently shapes out the midrange (not as good as the Symposium) but isn’t as warmblooded.
  • Tone is definitely uplifted – almost hyper-detailed.
  • Dead quiet

At least with the Chord TToby, it sounds more natural without these isolators. The noise floor is one of the lowest so perhaps it’s doing too good of a job? Otherwise, if you’re looking to extract the most detail and clarity out of your system, these may work out for you. If you want something with more euphoria – you could probably skip these.

SVS SoundPath Subwoofer Isolation

  • Lower octave presence was most obvious. More detail in the gradations and weight.
  • Realistic decays and timing – especially of the low-end
  • Meat on the bones with a deeper sense of atmosphere
  • Lacks a bit of layering and resolution

If you’re looking to add warmth, these might work for you. Although made for subwoofers, I found them to promote a wonderful density to the sound.

Definitely not as airy or quick as the Symposium or Solid Tech but its addictive richness is undeniable. It may be too meaty for some.

Synergistic Research MiGs

Typically, three MiGs are used in the arrangement specified here. Some of these arrangements aren’t a part of the recommended placements. I’ve only done them out of curiosity.

In this setup, I’m always using two MiGs in the rear and one in the front.

  • MiGs 1.0
    • 2 x rear pointed down, front pointed up
      • A very clear, quiet, and detailed sound, similar to that of the Solid Tech – but not as elevated. Which is a good thing.
      • Very tight bass
      • Precise imaging
      • Not a very warm sound
    • All three pointed down
      • Warmer yet still very atmospheric
      • Voices are still very detailed but isn’t as dense as the symposium
      • Fantastic soundstage focus
      • Very balanced overall
    • 2 x MiG 1.0 pointed down, 1 x MiG 2.0 front pointed down
      • Not a good combinations. Flattens out the sound and loses dynamics. It’s smooth though.
    • 2 x MiG 1.0 pointed down, 1 x MiG 2.0 front pointed up
      • Slight more dimensional vs pointed down.
      • A bit fuzzy overall. It doesn’t quite have the focus or resolution.
      • All pointed up
        • Sounds pretty much like the Solid Tech. Tonally elevated, detailed, and atmospheric.
        • Zero warmth
        • Gets a bit messy when the track gets busy.
    • 2 x MiG 1.0 rear pointed up and 1 x MiG 1.0 pointed down
        • Warmer and more mellow and smooth
        • Not as crisp or textured
        • A more calm and relaxed sound
  • MiG 2.0
    • All pointed down
      • Outlines are smeared.
      • Background isn’t quiet and bass is a little loose.
    • Front pointed up
      • Very atmospheric and detailed
      • Much better focus and imaging
      • Not as tactile as the MiG 1.0=
    • 2 x MiG 2.0 pointed down, 1 x MiG 2.0 pointed up
      • Crazy amount of focus
      • The definition of a holographic sound
      • Works well with warmer gear
    • 2 x MiG 2.0 pointed up, 1 x MiG 2.0 pointed down
      • More mellow and warm
      • Easy and smooth listening.
      • More coherence
    • 2 x MiG 2.0 pointed down, 1 x MiG 1.0 pointed up
      • Tactility and dynamics improve dramatically
      • Very clear and dynamic.
      • Much taller and wider soundstage.
      • Decays are very natural and transients are relayed immediately.
      • Probably the best placement I’ve heard so far for the TToby.
    • 2 x MiG 2.0 pointed down, 1 x MiG 1.0 pointed down
      • Softer dynamics and atmospherics aren’t as apparent
      • Outlines and shape of the performers aren’t as clear
      • A more laid-back and neutral colored sound.

The Synergistic Research MiGs obviously have a ton of flexibility depending on what you’re looking for.  Interestingly enough I looked at the placement descriptions after writing my notes and they’re on point.

In comparison to the Symposium, the SR is quicker and more vivid. Transients and reverb are much more audible with the SR placement (bold above) The Symposium has more cohesion and warmth while the SR has much more resolution, much blacker background, and fantastic focus.

In the end, I decided to stick with the warmer, wholesome nature of the Symposium but found myself going back to the SR placement at times. Those who chase transparency, resolution, and soundstage chasers will prefer the SR.

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Jay Luong

Mr. Audio Bacon himself. An open-minded electrical engineer and software developer by trade. I have an obsession with the enjoyment of all things media - specifically in the realm of music and film. So much heart and soul (and money) go into the creation of this artistry. My aim is to find out which products get me closer to what the musicians and directors intended.

View Comments

  • Here in the UK we call them crisps instead of chips and we have Bacon flavour Crisps. I really would have thought you might have tried those!

  • Thanks for posting this. I have two sets of the MiG footers and to be honest, I never read the instructions. I just put all of the footers pointing up. I also had things reversed in that I had 2 footers in front, 1 in the back of each unit.

    After reading your article I played around and also ended up preferring two in the rear pointing down and one in front, pointing up. I had the same sonic impressions you had.


    • The SR MiGs seem to behave the same, regardless of component. Out of curiosity, which component were you using with the MiGs?

      • I use the MiG's in my system at work, under a Job 225 amplifier, and a Schiit Bifrost Multibit.

        In my home system, I use Stillpoints under everything except the amp, where I use Rollerblocks. I preferred the Stillpoints and Rollerblocks to the MiG's when I compared them on the home system, so that is why the MiG's are in my work setup instead of the main home setup.

        Now that I know how to properly deploy the MiG's (thanks to your article), I should probably compare again. The MiG's provide a nice uptick once used properly.

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