Don't waste money on ultrasonic RCMs

Yikes!

invictus005

Every RCM that I’ve used made the record’s sound worse.

Really? That’s remarkable, given that so many have had different experiences. Which ones have you used?

Cleaning by hand is the only way. Cotton ball heavily soaked in 91% alcohol.

Alcohol? Why use a solvent to clean an LP when you can use a good ultrasonic RCM and avoid solvents completely? Or, you can use other methods and substantially reduce your use of solvents.

Because alcohol cleans well and has no effect on vinyl. I used VPI and Audio Desk.

Thanks for my chuckle of the day.

Because alcohol cleans well and has no effect on vinyl

Pretty sure that alcohol releases plasicisers and bonding agents from the LP depending on how strong it is...

Fremer has an article on ultrasound-based RCMs and a new one, here--> https://www.analogplanet.com/content/if-charles-kirmusss-record-cleaning-machine-and-regimen-correct... The claim to fame for this new model is alteration of the ultrasound incident angle relative to the record surface and use of a lower frequency. As I remember this aspect of physics, that's hooey. Here are the salient claims: "...he's 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."