Suntan Have Four Type DIY Capacitors for Speaker Amplifier, Audio Capacitors Crossover, Record Players, CD Players
Most audiophiles stand by grade logic on audio capacitors. Audio capacitors have Teflon, copper foil, silver foil, polypropylene/foil design, silver leads, oil, etc. I have heard dozens of capacitors, Ranging in price from just a few pennies to hundreds of dollars.
http://suntan.com.hk/pdf/Aluminum-Electrolytic-Capacitors/TS13AG.pdf