Paper-in-Oil (PIO) capacitors deliver warm, vintage-era tones, ideal for humbucker-equipped guitars. Popularised in the 1950s, they were used in iconic models like Gibsons with Black Beauty and Bumblebee caps. Made with paper and oil sealed in thermoplastic, PIO caps provide smooth treble roll-off and enhanced warmth.
The .047µF value is perfect for humbuckers, balancing lows and taming highs for a full, rich tone. Ideal for vintage restorations or retro-inspired builds, PIO capacitors offer tonal depth and character for players seeking classic sound.
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