Terry, You compared your top of the line Nottingham to an old technology, and chronologically old Technics DD. That is really not a fair comparison of belt-drive vs direct-drive types. The Dias would be far superior to the Technics, in so many ways other than the drive system.
Eno, So far as I recall, the Dual 721 is one of the earliest coreless motor DD turntables. (I guess it came out after the Dual 701, which was the first.) Nearly all the coreless turntable motors that have followed on to the Dual borrow heavily, if not completely, from its design. (Even the Brinkmann Bardo motor in the present tense.) In fact, I read that Kenwood got sued by Dual, because the Kenwood coreless motor so closely resembled the Dual design. "Brushless" is neither here nor there, but is it quartz-referenced for speed control? I ask because I think that idea came along later, late 1970s. It's what distinguishes the Technics SP10 from the SP10 Mk2, for example.
Eno, So far as I recall, the Dual 721 is one of the earliest coreless motor DD turntables. (I guess it came out after the Dual 701, which was the first.) Nearly all the coreless turntable motors that have followed on to the Dual borrow heavily, if not completely, from its design. (Even the Brinkmann Bardo motor in the present tense.) In fact, I read that Kenwood got sued by Dual, because the Kenwood coreless motor so closely resembled the Dual design. "Brushless" is neither here nor there, but is it quartz-referenced for speed control? I ask because I think that idea came along later, late 1970s. It's what distinguishes the Technics SP10 from the SP10 Mk2, for example.

