Peter also designed a power supply to replace the original power supply for the Technics SP-10 MKII table. I bought one for my SP-10 MKII table and it works perfect.
Some people don't like it when you correct their mistakes. The dudedoesn'tabide put me on ignore because he called out the wrong bridge in his post on another thread after I corrected him.
I highly doubt it. Spectral has strict specs for the speaker cables used with their amps. I'm sure any competent cable manufacturer could manufacture speaker cables for Spectral if Spectral provides the specs to them.