Where can I find suitable replacement capacitors for tube radios and vintage devices?

For tube radios and many vintage devices, suitable replacement capacitors are often just as important as the correct tube. Particularly sought after are axial film capacitors, for example Mundorf MCap or MKT 72, when old paper or tar capacitors need to be replaced reliably. Equally important are suitable electrolytic capacitors, such as classic types with 18 mm central mounting in dual versions like 50+50 µF, but also older values such as 4 µF or 20 µF, as found in many historic devices. The decisive factors are always capacitance, voltage rating and construction type, so that the replacement fits the device electrically and mechanically. We also offer a unit calculator that quickly converts values from cm to uF.