Vintage Neumann U48 Tube Condenser Microphone Cardioid / Figure-8 Neumann U48 Tube Condenser Microphone Cardioid / Figure-8 1958

The microphone underwent an extensive, professional restoration and overhaul by Gunter Wagner at Wagner Microphones in May 2026. It has successfully passed all endurance and final tests, putting it in excellent functional and aesthetic health. Capsule Condition: The capsule was removed and the diaphragms received an ultrasonic contactless cleaning. This completely resolved previous issues where dust on the diaphragms was causing low-frequency noise and audio cut-outs at close proximity or high SPL. Electronics & Circuitry: The microphone circuit was fully repaired and completely re-wired. The faulty high-ohmic thin-film resistors were replaced with original New Old Stock (NOS) components. Additionally, all contact corrosion was removed from the impedance selectors, pattern switch, and capsule head contacts. Tube & Socket: The VF14 tube was fully tested. The damaged Bakelite tube socket mount—which had been damaged by a physical impact—was successfully repaired and stabilised. Body & Housing: The microphone was completely disassembled, reassembled, and rewired onto a new base. Head Grille: The physically damaged microphone head/grille was straightened and de-dented, and the loose mesh was securely re-applied to the dome ring. Swivel Mount: The swivel mount connector was completely restored. This involved disassembling, cleaning, and priming the existing parts, integrating brand-new custom metal parts manufactured by a professional mechanical toolshop (fine-sandblasted, primed, and lacquered), and professionally re-terminating the cable.