Set of 4 RWN Neuhaus EF86 Vintage Audio Pentode Vacuum Tubes (Tested)
Enhance your audio system with the authentic RWN Neuhaus EF86 Vacuum Tube, a legendary component from the golden age of European electronics. These are not modern reproductions—they are genuine vintage tubes (New Old Stock (NOS) or carefully preserved used units in excellent condition), manufactured to the rigorous standards of German engineering. Renowned for their exceptionally low noise, outstanding reliability, and superior audio performance, EF86 tubes remain a top choice for restoring premium vintage equipment and building high-end tube amplifiers.
The History of RWN (Röhrenwerk Neuhaus)
Before becoming part of the renowned RFT consortium, Röhrenwerk Neuhaus (RWN) in East Germany earned an outstanding reputation for manufacturing instrumentation-grade vacuum tubes. The RWN Neuhaus EF86 is especially valued for its low-microphonic internal construction and precision-engineered control grids, designed to meet the demanding requirements of professional audio and laboratory equipment. Its exceptional build quality and electrical performance allowed it to compete directly with premium EF86 tubes produced by Philips and Telefunken during the same era.
Applications and Uses
The RWN Neuhaus EF86 is a small-signal audio pentode specifically designed for high-fidelity input stages, where exceptionally low noise, minimal microphonics, and outstanding signal clarity are essential. It is widely used in vintage audio equipment restoration, professional microphone preamplifiers, tube guitar amplifiers, hi-fi preamplifiers, studio equipment, and custom DIY audio projects requiring premium low-noise performance.
Guitar Amplifiers: An essential input tube for the Normal channel of early VOX AC30 and Matchless amplifiers, delivering the rich, creamy, and harmonically complex tone that made these classic designs legendary.
Vintage Hi-Fi Audio: Used in classic preamplifiers and audio designs such as the LEAK Stereo 20, Quad II, and Mullard 5-10.
Studio Microphones: A direct replacement for tube condenser microphones (such as the Neumann U67), thanks to its exceptionally low self-noise and excellent low-level signal performance.
Technical Condition & Testing ⚙️
Unlike many sellers who only verify filament continuity, every RWN Neuhaus EF86 Vacuum Tube in this set has been thoroughly tested using a Kyoritsu Tube Tester to confirm proper emission and overall electrical performance.
Condition: Used / Vintage (No Original Box).
Testing: Emission and absence of shorts professionally verified.
Lot Codes: Original factory production codes (e.g., 431213, 509055) are clearly visible on the glass, helping verify the tubes’ authenticity.
Technical Specifications (Datasheet Highlights)
Type: Low-Noise Audio Pentode (AF Pentode).
Heater Voltage: 6.3 V (AC/DC).
Heater Current: 0.2 A (200 mA).
Maximum Plate Voltage: 300 V.
Base: Noval (B9A), 9-Pin.
Equivalent Types: 6267, Z729, and 6F22.
Special Feature: Available with either an internal mesh or solid-plate construction (depending on the production lot), engineered to minimize hum and microphonics for superior low-noise audio performance.
Own a genuine RWN Neuhaus EF86 Vacuum Tube and ensure your equipment performs with the authentic sound it was designed to deliver in the 1960s. Take advantage of this opportunity to add professionally tested, fully functional vintage tubes to your collection or restoration project.
(FAQ)
Q: What does it mean that the RWN Neuhaus EF86 Vacuum Tube has been tested on a Kyoritsu Tube Tester?
A: It means that we used a professional Kyoritsu Tube Tester to verify that the tube has proper electron emission (remaining operating life) and no internal shorts, providing a much higher level of assurance than a simple filament continuity test.
Q: Can I use the RWN Neuhaus EF86 Vacuum Tube as a replacement for a 6267?
A: Yes, absolutely. The 6267 is the American designation for the European EF86 tube type. They are 100% compatible and can be used as direct replacements.
Q: Is the RWN Neuhaus EF86 Vacuum Tube suitable for tube microphones?
A: Yes. RWN tubes are highly valued in microphone applications due to their robust construction, which helps minimize microphonics (mechanical noise caused by vibration). This makes them ideal for professional studio recording environments where low noise and signal clarity are essential.
Q: Is the price for the entire lot or per tube?
A: (Adjust according to your listing: The published price corresponds to one individual tube OR the complete set of 4 tubes).
