$3500  >  Available from GTT Audio

Internal power rail supplying switch chip CPU

This is noise on the power supply feeding the switch chip

Before mods

Left is 5khz to 10Mhz  and right is zoomed in to critical 5khz to 1Mhz band

After

This is a vast reduction of noise supplying the switch chip/cpu

Some areas blurred to protect key changes - not all mods shown