How an audio rack can enhance your amp/pre




Just thought I would share my recent experience with upgrading my sound star technologies rack to the new rhythm rack.

Every now and then, I have a visiting audiophile who really appreciates my system…and traditionally asks – “wow, what makes it sound so good?” My typical answer is it all makes a difference, even down the equipment rack, which can and certainly should be considered a component…but in many cases is overlooked…

Star Sound introduction

About 10 years ago, I was introduced to Star Sound Technologies Sistrum platforms and Audio Points. Audiopoints has always been known for its manufacture of well-designed and beautifully manufactured brass cones used under equipment and as an integral part of an audio stand. This ultimately led to the design of stands designed to transfer vibrations out of components and down to ground. What I didn’t know at the time was how good the Sistrum platforms ‘sounded’. So, I bit the bullet and tried several Sistrum Platforms - what intrigued me about the stands was the design of the Sistrum Platform which allowed a pre-determined pattern of energy, known as Coulomb Friction to develop and dissipate via a high-speed calculated conductive pathway to earth's ground. Which made sense…how do you deal with airborne energy dissipation? I know you could put cones to reduce vibrations from the ‘ground up’ so to speak, but how could you eliminate airborne vibration? We’ve all held our hand on our equipment when music is playing only to feel the equipment vibrate, so how do you deal with it? Draining it quickly to ground made sense, but at the end of the day, all I really wanted to know was…does it improve the sound?

To say I was shocked is an understatement - the Original Sistrum Platforms offered – smoother sound, better transients, dynamics and a lower noise floor. And, the cool part is that you could turn up the sound and the music would flow with greater ease…well worth the investment. Robert at Star Sound was extremely helpful in guiding me through which racks made the most sense for my system.

Rhythm Platforms

Which brings me to 2015…it had been a while since I last spoke with Robert curious as to what his engineering team was up to…which led me to check out the ‘new’ model of Sistrum Stands – the Sistrum Rhythm Platforms.

These new platforms / shelves were substantially heavier, with a nicer overall finish than the original stands, with more grooves allowing for substantially more options to place points in various places under your equipment to refine the sound even further. In addition, the shelves were engineered to deal with resonances in a more efficient manner…The brass cones at the bottom of the rack were substantially bigger in size - 3 inches and quite heavy. The brass cones under the equipment were attached with nicely crafted screws that could be hand tightened and no longer required a screw driver… a nice feature making it both easier to put together but also the amount of tightening could influence the sound. The brass and platform rods are modular, making it easier to put together and painted in a beautiful black finish – in combination with the brass I would say the improvement in the WAF factor is significant – the stands are really impressive to look at. As for structure, these things were a solid as could be – and heavy! Not going anywhere, even in an earthquake!

My system includes VAC equipment, preamp, amps, DAC and a transport. As well as power supplies. Most of which now rested on the new Rhythm Platform.

Listening Impressions:

My first impressions were clearly a lower noise floor with enhanced dynamics, while also being able to hear deeper into the soundstage, which now extended well outside of the speakers. Tempo was faster, due to better-defined, leading edges. The high end was ‘cleaner’, with more sheen and decay on symbols and hi hats. Brass had that right bite to it, without over doing it…Bass lines were tighter which led to better ‘rhythm’ … and best of all, I could crank up the volume and the dynamic range seemed to extend effortlessly, which was a nice surprise.

One thing I noticed, that was true of my initial experience with Sistrum Platforms, is that the newer Rhythm Platforms sounded progressively better after 3 days of ‘settling’ and reached full potential after about 1 week. So some form of break in is required.
Over the years, I’ve tried different racks and various cones under equipment, whether if be soft, hard, ceramic, rubber (or some variation of ‘absorbing material’ etc.) you name it. All of which ‘altered’ the sound, but nothing came close to the Sistrum Stands holistically; while the new Rhythm stands, just take it all to a higher level…
While I cannot expound eloquently on science of Coulomb’s Friction, I can tell you that whatever they are doing at Star Sound visa vie their racks, it works…and it’s not subtle. This is a very audible improvement in your listening experience. If you want your system to perform at its highest level, I would suggest that you maximize your investment in your equipment by letting it do what it does best and put it on a Sistrum rack that will allow it to perform at its best. And if you want the best, I would strongly recommend the Rhythm Platforms.
wisper
"Star Sound’s adaptation is to transfer resonance at high-speed via conductive pathways away from the source of vibration keeping everything related to and the signal in constant motion." Hmmm…a line certainly worthy of any Faith Based Audio mythology discussion as it makes exactly ZERO sense…what also mystifies me is that there is any connection between claims of lowering the temperature of amps and providing profound tempo improvement using pointy things stuck to racks (!), and damping unwanted vibration in lathes and microscopes (necessary), except as it applies to the History of Damping. I do think the cello spike could make a great barbecue skewer though…and has the added benefit of making burnt food sound better. Underwater Earthquake Flight Research notwithstanding, I anxiously await the results of "further research" into the science of how vibration control (read my paper, "Microscopes and Subwoofers, a Paradox in Waiting"…Merkel Press $2.95) yields a "common single understanding" boiling down to "personal opinions on likes and dislikes when listening to or making music." Seriously, statements like can provide me with what surfing genius George Greenough described as "the innermost limits of pure fun."
07-24-15: Wolf_garcia
"Star Sound’s adaptation is to transfer resonance at high-speed via conductive pathways away from the source of vibration keeping everything related to and the signal in constant motion." Hmmm…a line certainly worthy of any Faith Based Audio mythology discussion as it makes exactly ZERO sense…what also mystifies me is that there is any connection between claims of lowering the temperature of amps and providing profound tempo improvement using pointy things stuck to racks (!), and damping unwanted vibration in lathes and microscopes (necessary), except as it applies to the History of Damping. I do think the cello spike could make a great barbecue skewer though…and has the added benefit of making burnt food sound better. Underwater Earthquake Flight Research notwithstanding, I anxiously await the results of "further research" into the science of how vibration control (read my paper, "Microscopes and Subwoofers, a Paradox in Waiting"…Merkel Press $2.95) yields a "common single understanding" boiling down to "personal opinions on likes and dislikes when listening to or making music." Seriously, statements like can provide me with what surfing genius George Greenough described as "the innermost limits of pure fun."

Wofly, there are several engineers who are part of the SS conglomerate (http://www.audiopoints.com/aboutUs.php), so maybe we can get one of them to chime in for a more exhaustive discussion? They typically don't waste time with these forums, but it might be worthwhile since this subject is treated with such scorn by many without backgrounds in mechanical engineering.

Robert told me that back in the 60s and 70s, one of the primary prerequisites to getting a sound "engineering" gig was long hair. Was that part of your pedigree? :)

As for the temperature thing, I have made personal observations to that extent. Maybe its a matter of simple ventilation, etc. Who knows. I know Robert did measurements.
Appreciate the info and review of these racks. Vibration control is an important part of getting the most out of your system.

Thanks
Wolf_garcia, what has always perplexed me about engineers is their belief that we know everything about natural laws. But I've sat in civil engineering doctoral defenses and heard of "safety factors" to assure buildings will stand. I heard of engineers tracking what happened in the Challenger disaster and finding too many holes in the rings holding in the O rings caused them to break one after another with the O rings popping out.

We don't know everything. We know how to build building that mainly stand, circuits that mainly work, etc. You know you cannot explain why Tom's cello spike works so you think you are smart deriding his efforts, without having a clue about what you are talking about. And then you turn around and say you "anxiously await" vibration research.

Finally, if people hear differences where engineers say there can be none, should good engineers or scientists focus on why people hear those differences rather than saying there can be none?
NO insult to engineers on here, esp. to Al who in no way resembles following tale.

I was at a history seminar once upon a time where a Navy Admiral came to talk about the roots of Naval Aviation .
One ex submarine guy asked the Admiral why the Navy recruited engineers heavily as pilots .
Reply was" because they are smart guys who understand what one needs to be a good carrier pilot, but lack the imagination to imagine crashing " .
I don't know if that's just a standard pilot joke, but he wasn't laughing .