A motion-sensitive light, battery powered, self-adhesive, stays on for 15 seconds after any movement detected. Is not switched on by turntable rotation.
From Amazon, get 3 for £10, about $13.
I needed something like this to be able to level my speakers and slide them around on wooden floors without scratching. $16.35 each.
Got these
30 for £10 and the M6 nuts for £5, so a cost of £15 in total or 50p, about 60 cents each, which makes it about 4% or 27 times cheaper than the cost of the audiophile product.
That must be a record, but I still have 22 of them left over.
It can be a pain to lift a 100lb class-A amp or Powerplant to try out new feet. So quick and simple with air wedges.
Why not use a couple of these AS THE FEET?

They don’t stay inflated indefinitely, they will slowly leak. It’s a B/P cuff mechanism and the petcock is not perfect.
I figured that, but I have seen other pneumatic kit like this. Seems like air might be the best suspension mechanism in some instances…
Speaking of pneumatics, I once tried a bicycle inner tube under my amp; my class A amp; my really really hot class A amp.
it was a terrible idea.
If you own a Technics 1200-esque turntable, this is a no brainer:
That reminds me of a story…
I was helping my uncle work on his car in a parking garage many, many years ago. He decided to answer Mother Nature’s call on the knee wall upgradient from where we were crawling under the car.
Not a good idea…
I’ve tried them under the plinth so to not block air vents and they seem to work OK. I put MTB sealant in them so they lose air much, much less quickly.
My current favorite cheap footer under anything with a large transformer is 3 wood blocks in the shape of a pyramid. They were kids play blocks I found on Amazon for a song. It really firms up the bass in a good way. Totally surprised me the degree of impact.
Did nothing for the DS but the BHK 250 and preamp and P10 all love them.
Room Shaper by Home Audio Fidelity. 129€ (69€ for HAF service customers). Reduces room mode frequencies dynamically and in real-time.
Have you tried it/care to share your experience, if yes?
Thank you.
Happy to, yes I run it. I need to remeasure my room with it enabled to objectively show the reduction in decay times but my ears tell me it’s working.
The only fussy part is it’s a VST and there is limited support for them in many consumer audio apps.
I use Roon and moved it from ROCK to a Windows machine that was already hosting my local music files so that part was quick and easy. I then added a free app virtualcable (Windows only) to plumb the output of Roon into Foobar. Foobar has plugin support for VST. It then sends to HQPe via uPNP and ultimately on to my DS DAC.
It works quite well though Foobar sometimes stops ‘recording’ so I’ve just finished a scheduled task to kill and reload Foobar daily to mitigate.
Here’s a spectrograph of my left speaker without any correction. Long, long decay in the lowest of frequencies. I’m replacing cap and resistors in my main speakers and have a spare pair playing now…I plan to remeasure once they are back in action to visually compare what I’m hearing. The stage is wider and deeper without the muddiness of the long bass decay in the room. I also use Thierry’s xtalk convolution filters for ~3 years and several revisions through system and more importantly room changes.
Thanks for the prompt reply, @brett66.
I use Anthem Room Correction (ARC) software on the analogue signal fed to my Anthem Pre/Pro after the DS DAC does its magic. It is very, very effective and “musical”.
I have bass traps for the front wall corners in my upgrade plan, but this software intrigues me due to its price and claimed focus of effect.
However, I can’t ge my head around how best to use it since my iMac hosting JRiver Media Center and Roon is in a different room (on a different floor) than my “Big Rig.” I tend to prefer not to mess with the signal via computer (mostly out of habit/lack of experience, I admit).
Any thoughts on how I might give this whirl given my set up? (My iMac “feeds” digital files to the DS via Wi-Fi to a router, then to the Bridge II Ethernet card by the way.)
My best bet is this is NOT a potential option for me.
Thanks again,
Scott
I too have an Anthem MRX for HT. ARC is by far the best of DRC for HT I’ve ever used. Audessey is no competition for the Canadian Anthem.
According to the in depth review/article I linked, the reviewer uses JRiver which directly supports VST. You should be able to load it and away you go!
Nothing to lose. The demo runs forever only a decrease in volume every minute or so occurs. This plugin is quite special and unique to my knowledge. Best for it to be first in the digital chain and yet is happily combined with downstream DRC if one chooses. I can’t say enough good thing about Thierry’s convolution filters. I made a few using REW and his blew what I did out of the water.
Thanks, again.
I am going to have to do some research and get into the details, I guess.
I need to understand how to measure my room, and how to go from measuring my room to running the plug-in/correction in JRMC, when my iMac housing JRMC is on a different floor and in a different room than my Hi-Fi rig.
Pardon my ignorance,
Scott
Ah yes, I forget that I have already cracked that nut. Fortunately, you don’t have to learn how to use REW. Thierry has created a standalone app that walks one through the measurements.
You will need a calibrated mic, the UMIK 1 or 2 is popular. https://www.minidsp.com/products/acoustic-measurement/umik-1
If you can get a USB cable to the Mac from the mic you’re all set. Perhaps temporarily relocate it closer to your listening room. I had similar challenges as my gear is also in another room.
Room Shaper only needs the main listening position measurements as it will contain all of the freq. decay info it needs. Convolution filters require multiple measurements much like ARC.
PM if you wish to discuss further, I’m happy to help where I can.
Ah…now “we” are making progress.
Can’t promise I won’t pester you again if I pull the trigger on a Mic and the software.
Thanks so much,
Scott
I bought these to install my component isolators, a piece of cake; great tool.