MRA : Myth or Menace?


New Vinyl : MRA : Myth or Menace?

This is an exercise to see how far I could get playing brand new LPs, UNCLEANED, before MRA toxicity became a problem.
I must forewarn you that for digital audio enthusiasts, the following notes will seem as productive as watching paint dry… ;^)

In an earlier A’Gon thread which lamented the number of warped examples of new vinyl on release I posted the beginnings of the experiment. Quote :

“Here's a heartening story for the OP : I often accumulate new LPs but don't play them with the intention of getting them cleaned first. Yesterday I took a chance and played one that had been stored, uncleaned from new since 2013. Opening it for the first time, it was "ruler flat", no discernible warps. Hole and label registration were very good. The LP played as if it had just been scrupulously cleaned. Noise floor was inky black. Transient peaks tracked perfectly and cleanly throughout the entire record. This 180g was a triumph of LP manufacture that harked back to the halcyon days of the 70s & 80s when no one had even heard of MRA and uncleaned LPs bought new still sound perfect today."

“Emboldened by my own experience (above) I've started playing new LPs without cleaning them. After warming up the stylus on a 2nd-hand LP, the next two that I tried were "For Your Pleasure" (Roxy Music), 1x180g LP, and "The Raven That Refused To Sing" (Steve Wilson), 2x180g LPs.
To my pleasant surprise all three of them gave the same result as above. Each had a nice glossy black patina with no staining or “marbling”.
(It’s possible that coffee coloured staining/marbling may be an indication that someone needs a new chemistry set and that the formula may be compromised in some way but I can’t be sure about this…) :^D

I paid particular attention to the quiet/silent passages on the Steve Wilson because it had a bit more dynamic contrast than the other album.
Even though I listen at levels of 85db or so - measured at a distance of 5-6m there were no clicks or pops just inky blackness. As a double-check I stepped into the near field during quiet sections and got the same result.
The run-ins and run-outs were also smooth and untroubled.”

After those listening experiences I sensed the beginning of a grand experiment to see how many new, uncleaned, LPs I could play while still obtaining such gratifying results before I crashed-and-burned on a severely MRA-riven one… ;^)

So, the experiment continued….
In addition to the ones previously posted (above), and as before, this is a description of their physical and behavioural properties for the purposes of checking where we are in terms of meeting acceptable standards of LP manufacture :

Norah Jones, “The Fall” (single album).
Anti-static poly lined sleeve supplied with enough room to slide the LP out unlike those that are paper only and so tight you end up destroying the sleeve to get the LP out!
Very slight spindle hole mis-registration. Again, not as bad as the HFN/RR test disc.
Disc was as flat and unwarped as you would have liked it to be.
In terms of surface noise this was silent throughout.
Run-in and track transitions were silent also.
The runout on Side A was silent despite having a piece of fluff caked on the end of the stylus!!
(I noticed this LP was one of those rare ones more inclined to become statically charged, despite the diligent application of a Zerostat)
Doesn’t get any better than that if you are looking for a result. SQ was excellent.
Another winner?!?!???

(Please note : for the next set of reviews none of them were static “chargers” i.e. the stylus was perfectly clean at the end of each side (not, perhaps, under a microscope but visibly clean when viewed with the naked eye – the stylus was cleaned, once per LP, btw..). There were also no signs of discolouration or blotchiness on any of the discs mentioned.)

Edwin Astley, “Randall & Hopkirk Deceased” (single album) sourced by Network-on-Air.
Quote : “Featuring new transfers from original analogue tape elements, mastering/vinyl cutting by Ray Staff (one of the best audio engineers in the world) and high quality pressing by the renowned Pallas pressing plant in Germany, this range of audiophile-level albums is presented on 180g virgin vinyl…”
Like the NJ, provided with an anti-static poly lined sleeve with plenty of room to reach in and grab the LP.
The manufacturers do seem to be getting their act together. Even the few that only have paper sleeves at least enjoy a decent sized one.
This was an album released to celebrate RSD but whenever I tried to get a copy in the shops I struck out.
I ended up ordering it on-line from the creators…
This was a terrific test of surface noise in fact it was a bit of a revelation. There were plenty of long silences on this collection of incidental orchestral music. (Rather like listening to a work such as Mussorgsky’s “Pictures at an Exhibition” only twice as long!)
Inky blackness prevailed during those silences. Track transitions and run-ins/runouts also silent. SQ superb. Slight 1960’s “colouration” to the recording – more so than you’d experience on e.g. John Barry Collections, but still the best rendition of this music I’ve ever heard (and I’ve got some BD recordings featuring it).
Again this disc sounded so good you’d think it had been cleaned. Excellent dynamics and recording depth.
If only BDs sounded like this, audience involvement would be off the scale!
So, a triumph! There are others available from Network. Given the quality of this offering I’m going to have to collect them all now… 
(Update : I’ve made a start and ordered a few already….)

Hawkwind, “Electric Tepee” (double album, red vinyl Limited Edition)
These played perfectly with a perfect noise floor (or at least as far as I could tell given that it was a hard-Rock album). Track transitions were silent and run-ins/outs also silent until the very end.
Nicely finished product. No rough edges or rags.
Textbook stuff! 
My only objection was that it, disappointingly, had been supplied with paper sleeves with circular cutouts and no poly liner 
They were loose enough to get the discs out easily so no problems.

The Enid, “Invicta” (double album)
The first LP needed the spindle hole to be reamed slightly (loose core) nothing too involved. Second one fitted ok.
The first LP was clearly “dished” even though it wasn’t easily visible. (The reason I know this is because I have a spirit level bolted to the bearing housing on my tonearm ;^)
It started off with a strongly “negative” VTA i.e. “tail down” then the arm progressed “downhill” towards the inner grooves where VTA levelled out.
The reverse situation applied to Side B. (I didn’t bother adjusting VTA to average it)
Apart from slight “dishing” there was a single pinch-warp on the first disc but not severe.
Basically it looked good – even to a perfectionist.
Grooves were not very deeply cut and the runouts were excessively long (1.5” typically). They could have used the available space better.
Perhaps attributable to the dishing, noise performance slightly less than perfect on occasions with both discs but commendable as it was low-level and wasn’t intrusive.
SQ was faultless otherwise.
Verdict : less than perfect (physically) but still excellent.

The Beach Boys “Pet Sounds” 180g single album.
No defects in drilling or labelling. Not warped in any way.
Poly lined sleeve plus detailed inner sleeve.
Very low-level noise only during the occasional track transition, no audible noise during the music itself.
SQ was first class. Very lifelike and alive. Sounded like it was recorded yesterday.
Excellent pressing.

Led Zeppelin “Led Zeppelin” 180g single album.
Needed the spindle hole to be reamed out. Again, not warped in any way.
Poly lined inner sleeve similar to the Goldring type.
Back to 100% inky black background silences with this one. Run ins completely silent as were the track transitions.
SQ beyond reproach. This album will leave you dazed & confused…

Based on these most recent experiences I’m inclined to buy MORE new vinyl rather than less.
I’d had one bad experience with MRA and this had put me off playing new vinyl – tending to save them until an opportunity to get them cleaned arose – but as you can see, some of these new albums have been different class while all have been eminently playable.

With no problematic issues after about 16 LPs (4 of them not yet described here) you can see the percentage failure rate is still zero. This gives a good percentage indication of success and I have to say the signs are good but the most important observation is that cleaning was not essential to get good results (especially in terms of surface noise & tracking on peaks)and that is what the experiment was really about. ;^)
This may not be "your" experience but if not we’re still interested in your comments if you've tried the experiment already ;^)

I still have large amounts of new vinyl still sealed in its packaging so I’ll keep going… but effectively the notes end here as I feel the exercise has been worthwhile ;^)
moonglum
Back when I had my special ed. Maplenoll air bearing everything with 500 feet (count 'em!) of air tubing, two air buffers, sub hertz isoaltion stand for the Mapleshade, and naked Quad 57s I used the water lubrication system for playing vinyl records, you know with that little red roller do dad from Audio Technica. There really is NO substitute for playing records wet. Thus, I don't understand why anyone would not favor a bit of lubrication. Now, whether or not MRC would actually act as a lubricant who knows. Apparently we don't even know if MRC is involved at this point.
What I don't understand is the lack of belief when those in the record pressing business say there is no release agent in their processes. We just continue with "yes, but". Additional disbelief on my part towards those that swear MRA must be cleaned off and then apply Last to their newly cleaned records! This is not to say I believe one should not clean new records but I believe I am not removing MRA
Based on some of my reading, which is by no means definitive, we may be speaking at cross-purposes. From what I gather, various fatty acids are used in the PVC compound used to make vinyl records. These serve to help control the mixture and the point at which the ingredients melt, i.e. thermal stability. In this, they are sometimes referred to as "lubricants" but not in the sense that we might commonly think of a lubricant. At the same time, to add to the confusion, these materials can also be used as a 'release agent' in molding. Such materials, which include stearic acid, can apparently migrate to the surface- this is, I think, what people are referring to when they talk about the need to clean off "mold release agent." So, there may in fact be artifacts from manufacture that need to be cleaned off of the surface of a new record. And, if you read some of the messaging from the cleaning fluid folks, they talk about removing the bad stuff, but not doing damage to plastics or their properties; in this sense I think the term "lubricant" is used in a more common form. But, is that stuff really there to "lubricate" the surface or as part of the chemical composition of the compound to make manufacture more consistent? (And, to what degree is there any consideration given to the ease with which the just pressed record can be removed from the stampers?). Perhaps I'm just restating the question, but you see how these terms can be used, e.g. "lubricant" in different contexts.
I'm not sure if you asked a materials scientist if he or she is including a "mold release agent" in the vinyl compound, they would consider this the primary purpose of adding this material to the mix. So, the folks selling fluids may be correct, and the folks involved in making the vinyl compound and pressing the records may also be correct. I'm not a plastics scientist, I am just reading papers, patents and trying to work my way through a practical understanding of how all this adds up. That's my reading at this point in time, which could change, based on further information. But, it is consistent with everything I've learned, and somewhat conveniently, also reconciles the different views on the subject.
Glad to be corrected.
Dear Whart,
That was possibly the most thought provoking post I've read on the subject. I can almost feel myself veering back towards cleaning new vinyl.

I suppose we must remember that vinyl is, broadly speaking, a piece of plastic material. Different forms of plastic material are notorious for "out-gassing" even at room temperature. Vinyl doesn't seem to be as "chemical-smelling" as bin liners, cables etc so I guess we should be thankful that we're not inhaling cyanide on a day-to-day basis ;^)

The results were undeniable though, and the proof of the pudding is in the eating. Perhaps the conclusion should be "clean if required" and leave it to individual choice.
Thanks, Moon. I think -- and base this only on rough knowledge, not my pseudo-scientific background-- that outgassing is more common when plasticizers are involved. I'm not sure there is much in a vinyl record, since it is meant to be stiff, not pliable. The problem encountered with those heavy PVC type outer jacket protectors reacting to vinyl records is due, I think, to the plasticizers in the record jacket protector (which is soft and pliable due to plasticizers), leaching or chemically interacting with the record (potentially, even through the cardboard jacket). I don't know that records themselves are really out-gassing, but I'll defer to somebody who has plastics/science background. In the meantime, maybe more questions than answers, but you (and others here) stimulated my thinking; this is one of several issues I've been casually looking into- trying to get answers is a whole other thing, so I'm open to other views. Glad to contribute where I can. Good holiday, if you celebrate.