Are you inferring that SME provides turntables with higher speed accuracy performance to professional musicians and conductors only? That is how I interpret your analogy to the BMW M5 reviewer and the club owners after they complained about performance.
It was just an example that you will find in every situation of real life something comparable like this discussion and that the sentence "...lots of happy owners" isn't worth the time to read. It may sound good, but it can be a lie also. So what....
I don't care about SME, Raven, Seiki, Kuzma, Clearaudio or whatever someone owns, I also know musicians who are very happy with a 1k Kenwood Stereo System, some get a lot of emotion when they hear a performance via their iPod and earplugs....
I believe in brain, the ability to do something right...but that's me
Timeline
The advantage from that unit is mainly, the user can adjust the speed with the VTF, means, a real time job when the record is played. Most other "adjustments" are only useable without VTF, that means, in real life it is a nice toy, but worth nothing.
I bought the Timeline as a tool to optimize my System, first, when I had the Basis Debut, that table was stable, no drift, the way it should be, same with Kuzma Reference and even the 20 year old Seiki is stable like a rock (MY Seiki ....) both speeds, 33 /45 ...I noticed very fast that this timeline will destroy a lot of dreams and it does. I gave it to a few audiophiles and there we discovered how many units can't be adjusted properly, independent from price...was new to me also...
I haven't checked it with a Brinkmann, the owner I know sold it some time ago, but not based on Timeline...but I think Steve from SOS tried one with TL and it is ok...
Ah, before I forget, the main question from all who hate that thing: "Is there an audible difference between a shifting red light and a stable red light behind the Turntable?"
Answer: "It depends.... :-) but yes, normally you can hear it at once, soundstage is deeper, focus is better, transients are more clear....simply less smeared notes.
Modern analog is mainly done cheap. Profit counts...here you can see it :-) But that has nothing to do with bearing, isolation, energy transfer, unleveled armoards ... That is too much I think. There are a lot of customers out there who prefer to believe instead to control what they buy. I have no problem with that, the "manufacturers" needs them...see the car story and I think, you will find something comparable in coffee machines, fridges, Tonearms and so on...
But shooting the messenger is an accepted solution here :-)
In the next Raven thread it will be repeated again and again... this ---> I love my unit...and happy ownership... and the nice guy /bad guy story....
Banana products have the ability to mature at customers place, that is part of tweaking or competence?
Btw. R2R machines were made in a time where engineers did the thinking, probably that is the reason why they sound so different compared to a lot of Turntables?