Jeffjazz makes a very good point about break-in, and synergy with loudspeakers.
My SWL9.0SE originally had Sonicaps, and I had the power supply caps modified to Blackgates. The Blackgates were clearly superior to the Sonicaps in my system, but they took a whopping 500 hours to break in. The change was obvious once it occurred.
Also, I was using the SWL9.0SE with VS Gen III HSE loudspeakers, which are extremely revealing and unforgiving of components, IMO.
My SWL9.0SE originally had Sonicaps, and I had the power supply caps modified to Blackgates. The Blackgates were clearly superior to the Sonicaps in my system, but they took a whopping 500 hours to break in. The change was obvious once it occurred.
Also, I was using the SWL9.0SE with VS Gen III HSE loudspeakers, which are extremely revealing and unforgiving of components, IMO.