Kirmuss Audio div of Kirmuss & Associates, LLC © 2018

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Test: Kirmuss Audio KA-RC-1
Top by Plop

published in issue 10/2018, page 105

A new, exciting record washing machine comes from Kirmuss Audio of the USA. The KA-RC-1 cleans with ultrasound - and the power of bursting bubbles.

"We first encountered at AXPONA 2018 Mr. Charles Kirmuss and his "In The Groove" Ultrasonic Vinyl Record Restoration System. The system is based upon an ultrasonic bath-type cleaning machine from China, another of which that looked identical was being sold but a few feet away.
The biggest difference appeared to be in how the records were placed in the vat.

The other machine, like all of the others that adapt an existing ultrasonic bath device, uses a rotary spit-like mechanism to spin the records. Kirmuss's is a far more sophisticated adaptation that covers entirely the water vat with a slotted device that spins the records...

But Mr. Kirmuss claims there are bigger differences than how the records spin and that his machine while visually identical to the one at the other booth, is far different. Not only that, he claims it's different from the Audio Desk, KLAUDIO and the others in ways that are critical to how records can and should be ultrasonically cleaned.

Mr. Kirmuss ... set the frequency to 35kHz, which he claims is significantly lower than most of the others.

Kirmuss says the "direct hit" and higher frequency of the other machines damages record grooves and "shaves off" high frequency information. This of course is alarming to many of us who have used the Audio Desk and KLAUDIO machines to clean hundreds of our most valuable records and who have found the results to be both sonically stunning and far superior to vacuum and thread type machines.
Kirmuss's presentation is convincing and his ideas credible.

He takes ultrasonic record cleaning several steps beyond anyone else's regimen and makes a strong case for why he does so. His claim that the Audio Desk system, which uses a detergent/surfactant, leaves a soapy residue on the record makes sense: the record spins in the solution, the solution drops to the bottom of the tank and fans dry the record. Nothing removes the "soapy" film from the record. It's dried on—something I'm embarrassed to admit I never considered.
At the very least, the just cleaned record should receive a plain water rinse to remove the soap/surfactant before drying. In the case of the KLAUDIO, which uses no surfactant/detergent or alcohol, Kirmuss claims that cavitation alone cannot possibly remove oily and/or smoky residues from records. is not good for records, that vacuum and string-type machines too, are not good for records, nor is "air" drying in a dish rack.

His position is that wet records must be hand-dried using optical-grade cleaning cloths and that "soapy" and fungused records must be treated with an ethyl-glycol (anti-freeze) spritz and wiped with a camel hair brush that brings up from the grooves residual soap and breaks down the mould and fungus that grows on records because, he says, PVC is a 'sugar'-like compound.

there is a mould release agent baked in to the PVC compound that the pressing heat brings to the new record surface and that this should be removed using his system before you play a new record.

His system uses a very small percent of isopropyl alcohol in the cavitation water—just enough to break down oil and other deposits on the record surface. The large percentage of alcohol used in some formulations, he says, damage the vinyl by breaking down the plasticizers that are there to keep the record supple. That part I knew about, which is why I recommend against alcohol-based fluids. If he's correct, then a small percent of alcohol in water should work and not damage the vinyl.
AnalogPlanet hopes to soon have an "In the Groove" system to try at home, which will provide a much better indication of its efficacy and we will endeavor to research and try to verify (or debunk, if need be) the many claims for Kirmuss's system and of equal importance, the veracity of the negative assertions he makes about other ultrasonic cleaning machines and systems.

P.S.: if you Google Mr. Kirmuss, it seems apparent that he doesn't need this business to earn a living and that he's doing this because of his love for vinyl records. Stay tuned!


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Whether you are an experienced audiophile listener or just in the beginning of your audio journey, I highly recommend you try these speaker cables in your system.

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"Most Significant Product Introduction
Kirmuss Audio’s In The Groove Ultimate Ultrasonic Vinyl Restoration System makes the process of using this technology more affordable."

"Most Significant Product Introduction"

at AXPONA 2018

 "Best Analog Accessory of Show"​​



 "Kirmuss Audio’s "In The Groove" Ultimate Ultrasonic Vinyl Restoration System makes the process of using this technology more affordable.

You can RESTORE your 33 1/3, 45's and 78's simultaneously!