Those who I trust emphatically say source first. Of course, when I finally jumped into the higher ended power cord fray, ta da, I got them for my mono amps first. Then preamp, then sources. The exact opposite of what is recommended…..so….don’t listen to me 😁
Where to put your best power cable?
If you had power cables of varying quality that were large guage and the amplifier was plugged directly into the wall socket and components into the power distributor, would you put the best one on the source, amplifier or the power distribution unit?