Modern paper-in-oil (PIO) capacitors are available from various manufacturers, offering a modern take on vintage-style components with updated materials and construction for improved reliability and performance. Some companies produce new-old-stock (NOS) military-grade PIO capacitors, while others create new versions with specific sound qualities like warm and dynamic sound.
From the internet:
Modern reproductions and new designs
- Luxe Capacitors (Mojotone): These are designed to replicate the sound and look of vintage Sprague caps using a similar vintage winding machine.
- V-Cap OIMP series: A premium option featuring a metalized polypropylene film with a custom oil impregnation process in a hermetically sealed brass canister for high performance and durability.
- Jupiter Condenser: Offers "new old stock" (NOS) and modern paper-in-oil capacitors, such as the aluminum foil and mineral oil versions, hermetically sealed for reliable performance.
- AmpOhm: Known for modern, current-production oil capacitors with excellent sound quality at a reasonable price.
- Rike Audio Q-Cap: This is a modern copper-foil paper-in-oil capacitor that uses a polypropylene dielectric for a different sonic characteristic than traditional paper dielectrics.


