Eherdian
It was the vintage electrolytic that smoked the new one... The old electrolytic was bigger heavier and sounded much better. The new small light Jensen Electrolytic sounded dry. It was like liquid vs. dry and the difference was VERY big in favour of the vintage. I am going to get around to doing a paper in oil power supply some day.
With the amp builder who is a great guy I am asking a ton of questions. If as I understand in an EL 84 circuit the first electrolytic is in the power supply then this would make sense to sound quality...
A comment from someone else talking about old electrolytics in the power supply. I am not aware that I am in any occult?
http://lenardaudio.com/education/14_valve_amps_6.html
"When occult audiophileism evolved during the 1980s, science and technology was replaced with mysticism and many occult followers believed the old rectifier valve and old Electrolytic capacitors contributed to the magical sound of pre 1960 valve amps. Some valve amp manufacturers today, who cater to the occult market, use rectifier valves and old style electros".