Here some essential insights after extensive care for the right information about the best possible record cleaning device after my ordinary VPI HW 16.5.
Initially, as most of us reading about this topic, I was mainly interested in one of the new ultrasonic cleaners. After a lot of reading and getting aware about the accompanying procedures of every type of cleaners, I asked a pro/manufacturer (not cleaners) and deep insider in vinyl business who knows every cleaner available and owns many of mostly the professional versions of them (custom improved ultrasonics, slot vacuum and point/string vacuum based etc.), which we normal consumers rarely see (double platter versions etc.). He and his similarly anal colleagues evaluated and used them since quite a while and still use all of them when needed.
Before I get to the insights, it needs to be stated that all cleaners improve and can be a large benefit to each one who bought them, so this is just for those who are interested in the best possible solutions and like to go a bit deeper.
The basic insights of those who tried it all extensively, matching with my sense of logic are:
Ultrasonic cleaners currently on the market (Kirmuss, Glaess etc.) run on much too low frequency, which is needed to create small enough bubbles. High frequency isn’t a problem for the records (some manufacturers say so) as long as the sweep is low enough. The Degritter has the highest frequency of the non professional ultrasonics and therefore is a better one. The Fremer praised Glaess has serious durability problems and a too low frequency and is absolutely not well regarded among the other experts (which doesn’t mean it can’t provide great results for the individual as I said).
Leaving the contaminated (even if filtered) residue of any kind (remaining dirt in the grooves or remaining fluid) on the record and let it dry (fan or not) in there is a no-go. This is something even Kirmuss also states, but his suggestion to rub off the residue with a cloth surely is not for everyone.
Ultrasonic cleaning definitely needs a normal vacuum clean afterwards to wash out and suck off the residue. Which certainly extends the process uncomfortably.
So the pro’s say, ultrasonic cleaning needs a professional bath for 5-10 records (costing 2,5k alone) plus the necessary stand, rotation motor etc, summing up to easily over 3,5k. Plus having an add. vacuum cleaner for post treatment as discussed.
The Degritter would have done it for me, but the add. needed vacuum cleaning and the either permanently contaminated cleaning fluid or the frequent need of exchange was too elaborate for my taste. I get later to the comparative cleaning results.
Normal vacuum cleaners, even the expensive ones like Clearaudio, rely on just a fixed, slow brushing by the turning record, nothing really reaches the grooves, so the result is not on ultrasonic level, but fine as long as it fits one’s needs.
Point/string suction based ones like Loricraft are better because the point/string suction process catches more than slot vacuum suction. But still, the suction process is not what makes the main cleaning performance, it’s most important what happens before, how long the record is watered and how the water and cleaning process gets into the tiny grooves. A professional ultrasonic cleaning with a post cleaning on a string suction cleaner would be really good, just really time consuming and needing two expensive machines.
Then there’s one machine which they prefer and finally have in daily use, as it’s even better cleaning than market available ultrasonics and does it time saving on one device with suction of the residue.
It’s the Hannl Mera Professional, which unfortunately is 5k in the US but much cheaper (better: less expensive) in Europe. It’s basically a luxurious and quiet slot suction vacuum machine, fully flexible in platter speed, direction and suction power … but the main and decisive part is the patented automatic round brush, turning counterclockwise to the respective platter turning direction. This automatic roll brush constantly flushes/purges the grooves for an arbitrary time when cleaning. It’s a combination of mechanically brushing the record and very intensively flushing the grooves in a way no other brush or cloth can and no ultrasonic has the efficiency in.
After I initially was looking out for an ultrasonic, that Mera pro is what I personally finally ordered now after over a year observing the market and looking out for opinions of experienced folks. My final alternative would have been a custom professional multi record ultrasonic bath with some needed Kuzma accessories, but inspite of the advantageous multi record cleaning option, the constantly filled, standing around large ultrasonic bath frequently needing water exchange/refill, together with the need of a following vacuum cleaning, as well as the different advantages of the Mera pro made me decide otherwise.
After all, what would I do if I had to buy another market available machine (if I was in the US) due to the high price of the Mera there? I probably would have kept my VPI 16.5 for the following suction process and would have bought the Degritter. If I wouldn’t own an extent of original pressings, I would have been happy enough with a normal vacuum machine.
Hope this information is a helpful background for some looking out for a new cleaning solution.