Well after a long time emailing back and forth, I succeed in persuading the guys at Ishino Labs to build me the Master BA-215T @ US voltage. However, the price would bump up to ~2,500$ shipped and there would be no warranty/return (!!).
That makes me have second thought. I haven't read any review about this amp. Is it worth the price tag? Finding a used KGSS makes me more and more impatient.