I Know the owner of Long Dog Audio and was demo’d a pre-production quartz power supply on a Garrard 401, it got a Hand Clap from the attendees, the impression it made was quite something, especially as prior to adding the LDA, the TT was being supplied Power through a Multi £000? Mains Conditioner Unit.
I was also loaned a Production LDA Quartz Power Supply, to use as a Comparison to a Power Supply/Speed Controller I Use that was built by its designer.
The LDA was the most attractive on my system.
The LDA was also used in another system with my own SC and another SC Design produced by the system owner for a 401 and Lenco.
The Lenco GL75 TT, has its own Bespoke Plinth Design and was the used TT, the LDA was preferred by myself and the system owner on this occasion as well.
Note: A DD TT with a built in Speed Control design will offer all that a ID TT can offer when it comes to having the Speed Control utilised as an extra.
The DD TT in many cases can be acquired for the cost of a ID's add on SC.