Belt Drive or Idler Drives in my experiences have an End Sound that can't be returned to where one remains contented after having been demo'd the TT's in use with a Standalone Dedicated Speed Controller.
The issue is Standalone Speed Controller Models can easily head North of £1500.
In context I can purchase 5 x JVDD TT's for the cost of one Standalone Speed Controller and even a working but poorly model of DD will hold its own in Speed Control against a Standalone Speed Controller costing approx' 5 x the DD TT's cost.
Additionally there are Speed Controllers that can be used with both Belt Drive Motors and Idler Drive Motors.
Improved VFM can be had from a certain design of Standalone Speed Controller if a Belt Drive Standalone Motor is used with an ID TT that has a flat finish side wall to a Platter.
A Belt can be added and a ID TT can become a BD TT, where both drives have a very accurate Speed Control.
I have also witnessed a DD TT, with a Platter Coupled to another Platter using a Belt.
Was the DD's Speed Accurcy transferred to the Coupled TT?
It does seem like a VFM method to get another Platter rotating to a point where Speed Accuracy is quite attractive.
If the OP really wants to experience a very satisfactory JVDD TT, the Aurex SR 520 will give them great initial experience for a very small outlay. This TT has a huge hunk of Copper for the Stator and has substantial material used for the Stator Bowl and Bearing Housing.
There are much much more expensive Brands Model of similar vintage that are a design failure in the Stator Interface and are not offering and rigidity when torque is applied.
When the Stator Bowl has flexion from torque energies being transferred, does one think a 0.2mm pressing tolerance is a concern 🤔😂, stop kidding oneself.
Another thing of interest is that the Aurex Spindle Interface with Bushes is extremely accurate, zero play can be detected.
A few modern materials brought in to be used with the Aurex and there is a substantial DD TT being put to use, leaving the Offer Topped Up.
I own a Quad of these TT's all imported and all arrived over a period of time, inclusive of Taxes, for not much more than £600, all in.
One of these will be offered with an SME IV to my Wife, for her SS systemwhen the home is renovated.
I would not sell her short in any way she has a great ear and owns more than half the Album Collection.


