Ok. Here is the thing that I think makes a difference. With the ultrasonic you use a boars hair brush and surfactant which I did use when I I did the cleaning. I am betting that if I incorporate that into my systems cleaning routine the grooves will be about as clean, but your right. Test 2 is the ultrasonic cleaner. However if there is a difference I don’t know if I could justify spending the coin for the ultrasonic.
Furthermore. The listening test proved to be in inclusive as I heard no sonic difference between cleanings. If it was I certainly could not detect it. Also the downside. The process takes way away longer using the machine. I could clean 10 records by the time it takes me to clean one using the machine. Ok I’m getting a little bias now because that should not matter but I have over 400 albums and it will take me a year to clean them all with the ultrasonic. I guess if I were buying old dusty records maybe but I only buy new or used in mint condition. I guess for the one offs where I run across an original pressing of an old record I will just borrow the machine again lol. Now I will tell you that this machine is not one of the more expensive ones. (Under $2k) so I’m not comparing this to one of the more top of the line cleaners either.
Furthermore. The listening test proved to be in inclusive as I heard no sonic difference between cleanings. If it was I certainly could not detect it. Also the downside. The process takes way away longer using the machine. I could clean 10 records by the time it takes me to clean one using the machine. Ok I’m getting a little bias now because that should not matter but I have over 400 albums and it will take me a year to clean them all with the ultrasonic. I guess if I were buying old dusty records maybe but I only buy new or used in mint condition. I guess for the one offs where I run across an original pressing of an old record I will just borrow the machine again lol. Now I will tell you that this machine is not one of the more expensive ones. (Under $2k) so I’m not comparing this to one of the more top of the line cleaners either.

