fdd5d689_e_Notes_on_Coupling_Capacitors__Impressions_HV
[Brand] A.S.C. Metalized Polypropylene in Spearinol, 50uF 330VAC tested $14.00 [Impressions LV] These come in smaller values, but I have the 50's around for a power supply. Welborne uses these to good effect as the "Ultrapath" cap in their DRD amplifiers (though they also bypass them with a film and foil in the highest end version.) These may be one of the best deals going in caps, particularly in large value film caps. Overall they are very nice sounding. They don't quite have the resolution or liquidity of the Jupiters, but they are way way cheaper too. In comparison, they sound almost as good as the Sprague motor run caps (though not quite as good as the Obbligato caps) offering a good balance of tone and resolution. [Rating] 3 [Impressions HV] 
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ecp audio diy: Some Notes on Coupling Capacitors
Impressions HV