Would like to know more about the so-called "instrumentation grade op-amps." What, exactly, makes them instrumentation grade?
Or, did they mean to say that an instrumentation amplifier circuit topology is being employed?
Perhaps something was lost in the translation.
Can the plinth accommodate other tonearms?
Are the tonearm and cartridge off-the-shelf models or were they customized in some way for Electrocompaniet?