Jupiter 022mf 600V VitaminQ Aluminium foil paper capacitor. Authentically built to the original construction, housed in a solder-sealed true hermetic case. Jupiter Vitamin-Q creates the ultimate lush tone with mysteriously warm juicy midrange and amazing musical flow, with a slightly softer top and bottom end than the Comet Type. These capacitors utilize the same polymerized impregnation fluid developed by Sprague in the 1940s. Hermetically Sealed and processed under a deep vacuum for several days. Hermetic sealing keeps oil from leaking out and provides protection from ingress of moisture to ensure long life. Glass to metal end seals are soldered into tin-plated brass tubes to form leak-tight joints. Jupiter Aluminum Foil Vitamin-Q capacitors are built to Mil-Spec standards yet developed and refined for beautiful sound.