This is the result of many years of pursuit and some of working in the industry. Having built the amps (pre & Pwr), I have modified them. The RM-9 has double filter caps, and the MK-II chokes with an extra set of filter caps attached. I have also dbld the Bias supply caps. For the Modulus, I have replaced the umbilical cord with wire dedicated to Low noise transmission of DC power (twisted pair) and replaced the Phono jumpers and installed some ferrite (RFI is a major challenge below Sutro Towers). The balance of the system has been compiled slowly and with Vinyl in mind, I hope to upgrade the turntable/arm/cart. soon. Many happy hour of listening pleasure!