Is the Technics SP10R motor controller using a switching power supply

With the present exchange rates+ Taxes and Shipping, the Purchase from Japan is presenting itself as attractive.

I can't answer the query you have raised, but do listen to a SP10 R > Glanz 12" TA > Miyajima Cart' on a regular basis, used in conjunction with Valve Equipment and Quad ESL's. I am always impressed with the presentation.

@ddriveman I do not own the SP10 R, it is a friends, this individual was initially a user of a Linn LP 12 that has many Upgrades included.  They purchased the SP10 R after being demonstrated my modified SP10 MkII. 

As for the TA Selection they were suppled a range of TA's to trial with the New un-plinthed  TT, mounting TA's on a Standalone Arm Pod.

I even loaned a SME IV to be trialed with other TA's, the 12" Glanz was the one that made the biggest impression.

This TT, is mounted in a Solid Aluminium Plinth produced by a machine shop to the owners dimensions, the TA remains mounted on a Pod.

My suggestion for you as a Plinth Material is to investigate the use of a Densified Wood such as, 'Panzerholz' or 'Permali'. To attain knowledge of this material early on in your planning will give a good footing for the future plans. I know from personal experience how valuable this Plinth  type is a addition to a DD, especially the Technics SP10 design. 

@ddriveman You have done your research and in my view have invested wisely in the design for the Plinth. It would be very satisfying as a outcome, if only a minimum of modification is required to fasten the R to the plinth in place of the Mk III.

I will make an inquiry to have images taken, I am not too sure how to add images to posts on this forum. I only have had success with URL links. 

I also have a selection of Vintage DD TT's imported from Japan, and have a few en-route at present.

I am happy to use a simple Walwart Step Down Tranx when getting the early impressions of a TT. If it becomes one I am interested in for further investigations, it will be converted to 230V.

These TT's are usually purchased under the impression they are wanting in some way, which all have proved this to be the case, and the TT's are not in the same price bracket individually as a SP10 R. I can't but help feel, I would want to have the R, if it was reliant on other ancillaries to produce the correct working Voltage, having the R work with the supplied Mains Voltage would be my preference.