Description:
Matched Pair of Vintage Soviet Military Grade OKBG-MP 0.5uF 200V 10% PIO (Paper-in-Oil) Audio Capacitors
Up for sale is a closely matched vintage pair of high-quality Soviet Paper-in-Oil (PIO) capacitors OKBG-MP. Both units come from the exact same factory production batch, manufactured in November 1987 (Matching Date code: 8711) and feature the highly desired official Soviet Military Rhombus (Diamond) quality control stamp alongside strict blue factory inspection marks.
The OKBG-MP series is well-regarded by global DIY audio enthusiasts for its classic oil-impregnated paper and pure metal foil construction. Hermetically sealed in a flat rectangular metal casing, these vintage components provide exceptional long-term reliability and ultra-low leakage.
While rated at a lower 200V ceiling, this 0.5uF pair is a gold-standard choice for interstage signal coupling in tube preamplifiers, custom guitar effects pedals, line-level audio circuits, and vintage tone correction networks. They are celebrated worldwide for adding a warm, smooth, and distinctively musical analog character to the audio path. The integrated side mounting ears allow for quick and secure chassis installation.
Key Features and Specifications:
- Model: OKBG-MP (ОКБГ-МП) - High Reliability Military Grade
- Capacitance: 0.5 uF (Microfarads)
- Tolerance: +-10% (Standard audio grade precision)
- Voltage Rating: 200 V DC / AC (Perfect for preamps and tone circuits)
- Dielectric: Paper-in-Oil (PIO)
- Case Material: Hermetically sealed flat metal block with original finish and integrated chassis mounting ears
- Date Code: 8711 (November 1987 - Perfectly Matched Pair)
- Quality Grade: Soviet Military Rhombus (Diamond) and OTK stamped
Condition:
- Status: New Old Stock (NOS).
- Cosmetic condition: Pristine vintage condition, never soldered, with clean factory lugs, exactly as shown in the photos.
- Testing: Visually inspected and guaranteed authentic.
Perfect For:
- Tube preamplifier signal paths and line-level coupling
- Vintage guitar amplifier tone circuits and modifications
- Custom DIY audio pedals, preamps, and boutique creations
- Restoring vintage electronics with authentic military-grade PIO components
You will receive the exact matched pair of 2 Military-grade 200V capacitors shown in the photos.
Shipping and Packaging:
Worldwide shipping with a tracking number provided. The items will be packed securely with extra layers of thick bubble wrap inside a sturdy cardboard box to ensure safe transit and protect the insulation seals.
If you have any questions, feel free to ask before buying!