I can't remember where i found this pic, but i thought it was pretty cool, and good for tube amp greenhornes like myself so i thought i'd post it.
cheers!
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic
Polystyrene capacitors have been long time favorite capacitor of audiophiles and high-end audio manufactures such as Telefunken, Blaupunkt, etc. Polystyrene Film capacitors are often referred to as the Holy Grail of Film Capacitors due to their most desirable electrical characteristics such as exceptionally high insulation, low leakage, low dielectric absorption, low distortion and excellent temperature stability. In most instances polystyrene capacitors (often referred to as Styroflex or Styro in Europe) can be used as a direct substitute for silver mica and/or ceramic disc capacitors.
Construction: Manufactured from premium quality polystyrene film (PSA) dielectric aluminum foil electrode with long axial tinned copper leads for hand wired circuits.
Use: With their excellent electrical characteristics, Polystyrene film capacitors are ideal for use in: tuner & equalization circuits; commercial, industrial & measuring instruments; critical analog circuits; filters, tuners, integrators & sample-and-hold circuits; IF transformers; pulse networks; analogue & digital computing circuits and critical timing circuits such as VCO (voltage-controlled oscillators) and VCF (voltage-controlled filters).
"Curiosity may have killed the cat, but it saved the mice, who ate the cheese."