Burn in question and evaluation before burn in

Rodman99999, thanks for the link.

Maybe designers will provide enough data over time that "tech" minded audiophiles will accept the fact that with current technology it's impossible to design caps that don't have "sound."

Caps used in critical positions in high end audio combined with a careful listener means the effect is huge. Most high end manufacturers have upgraded caps steadily and frequently over this last decade. It's a technology that's literally exploded with innovation and improvements.

Exactly!! =8^)

I think we are in full agreement about capacitors - see what Douglas Self has to say;

....well-known capacitor shortcomings such as dielectric absorption and series resistance, and perhaps the vulnerability of the dielectric film in electrolytics to reverse-biasing. No-one has yet shown how these imperfections could cause capacitor audibility in properly designed equipment.

The last sentence is a key one - "in properly designed equipment".

I think we also agree that it is not safe to assume that everything out there is designed properly and burn-in is necessary for many designs.

Cyclonicman,

My preamp was freshly installed with new upgraded board, it is supposedly better than the old version, but no, I have no idea how it will eventually sound.

Demo gear fully broken in and then decide if you like it. If you like it buy it...maybe even try it at home:)