Here we have the SoZo brand of capacitors. Popular among guitarists, these offer a similar sound signature to the highly regarded Astron and Mustard capacitors. SoZo NextGen Yellow Mustard Vintage CapacitorsSoZo`s newest line of capacitors, similar sound signature to the Yellow Mustard caps of old. Sozo NextGen Blue Molded Vintage CapacitorsThe BlueMolded line of capacitors from SoZo are retrofits for Astron or Blue Molded caps used in vintage amps.