2020 update : JC Verdier La Platine

Personally, I find the SP10MK3 score hi on the "HIFI" criterion, but I start to develop listening fatigue about an hour into the listening session. Many audiophiles would attribute this to the rapid speed correction, so call hunting, of the SP10MK3.

 

I don't know whether the SP10R is in a similar situation, but can't help to wonder if the added weight actually smooth out the speed hunting by making it harder for the  motor to adjust the speed rapidly!

@thekong once your ears are catch the DD distortion you will always catch it, no matter which DD you hear. Every direct drive TT has this issue of hunting which results in a non-continuous flow. The brain works to fill/interpret the gaps hence the fatigue. I have tried many DDs now, it is true with every one of them. Dont bother with DDs if you cannot stop bothering with this aspect of distortion.

My experience with TT's has been to use a Belt Drive in the earliest days of building  a HiFi System.

For a Proportion of the 90's I used a Belt Drive TT.

From shortly before or shortly after the Millennium I started to use Idler Drive and it was the impression this TT was able to make, that got myself into learning about different ancillaries to be used with it.

I used this Idler Drive for 14 years and then changed it for a modern thought out approach to a Idler Drive, where I acquired a PTP Solid Nine > PTP Bearing and a Speed Controller.

Very shortly after this I was introduced to a Technics SP10 Mk II DD, where the TT belonged to an EE who had become very familiar with the TT and have their own Mod's to be used on it.

Various Idler Drives including my own and the DD was at a comparison day, and not one Idler Drive was able to impress me to the extent the DD was capable of.

I received a demonstration of the my Idler Drive and the DD are the home of the EE, where the outcome was that I signed the dotted line for the DD and Tonearm Purchase and have not looked back with any regret.

A Friend who is a long term Belt Drive owner/user, a short term Idler Drive owner /user, when hearing my TT, chose to go for the SP10 R > Glanz Tonearm to have the latest technology used in their system.

A similar story for another friend who is a long term Belt Drive user as well, following being demonstrated my DD TT and Tonearm, they purchased a identical set up.

Prior to my knowing these individuals through a local HiFi Club, they were both quite familiar with another members SME 20/12 > SME V, I have also through club participation become familiar with the SME TT.

The SME owner has now gone for a Idler Drive > Origin Live Illustrious in a lightweight Plinth Design, not adopting the usual Massey type.

When an individual becomes Wed to a performance offered by a TT, it looks like for some and probably many, they will follow their own instinct for what they feel is right for them.

Only the ears as the tool will enable the necessary information to be processed and allow the individual to confirm for themselves what is the most attractive to their unique preferences and a satisfactory assessment be carried out.

I do not see a description being the best method to be used to evaluate the  differences to the sonic trait that each drive mechanism can produce.                    

I have yet to audition the SP10R, so I don't know if they have solved, or lessen, the problem I have with the SP10MK3. However, since a lot of users are perfectly happy with the SP10R and SP10MK3, I suspect this problem may be user dependent, some of us are just more sensitive to it than the others. If you don't experience the fatigue, both of these tables could be a very good choice!

I have a take on the Technics Decks. 

I have not had an audition of a SP10 Mk III so can't comment on the performance of the TT in general or especially a individual one with a assessment being offered about a problem which is suggested as being a noticeable speed fluctuation, that when detected can become a detractor that is seemingly unattractive to the TT's owner.

I have received demonstrations of at least Five SP10 MkII's beyond my own one, a few of these have been heard for quite extended play times, and two of these have been encountered in an environment when there has been multiple guests present to take part in the events.

All SP10 MkII's I have had demonstrated are models overhauled by the same EE who has carried out work on my owned model.

 I have also heard the SP10 R for quite extended periods in the Company of DD, Idler and Belt Drive TT owners.

At no time from any recollections of conversations had, both as Group Discussion, or as a aside discussion, has the subject of noticeable speed fluctuation been on the agenda.

To take this one step further my own SP10 Mk II was used in a demonstration of my main HiFi System at a Public Event where 500 Public attended.

My Demonstration Suite was pretty much full to capacity for a large proportion of the day, and on a few occasions attendees in the room were very vociferous in making their observations known.

Not at any time was a discussion had about a noticeable speed fluctuation from the TT.

I don't disbelieve a speed fluctuation is detectable on a SP10 Model, in the same way I don't believe all Idler and Belt Drives have a detectable Speed Fluctuation, if the basic set up is correct the Idler and Belt Drive should rotate at a very accurate speed rotation.

Maybe the speed fluctuation being referred to on the SP10 is not ubiquitous to all SP10 Models and only shows if there is something not quite right with the basics of the TT.       

@pindac you are probably missing the point. We are not talking about speed fluctuation, we are talking about speed correction. Every TT has speed fluctuations and there are different correcting mechanisms. In direct drive like Technics the speed is corrected by a electronic circuit using a quartz lock. This correction happens many times a second at micro speed level in a DD. It is required because a DD motor rotates at only 33.3 rpm and the platter is part of the rotor which is rotating. Hence the error correction has to be very aggressive. Even a 0.5 rpm change is devastating while listening. But a BD and ID have motors rotating at 300rpm+. The platter rotates at 10th of the motor speed. Even if the motor speed changes by 1 rpm, the audible effect at the platter is much lower hence the error correction used is much more benign.

The continuous aggressive error correction is what gives DDs a certain character which people refer as discontinuous, fatiguing, analytical and so on. Not every one is sensitive to this character though hence if you do not hear, I envy you. IMO DD is the easiest way to get awesome honest and accurate sound from Vinyl except for this distortion.