Up for sale is a uniquely exceptional vintage Sennheiser MD 421-U large-diaphragm cardioid dynamic microphone, manufactured in West Germany.

• The Factory Service Setup: This unit features a blank factory nameplate with no serial number and a remarkably pristine body shell—the definitive mark of an official Sennheiser factory service lab overhaul where units were fully refreshed with factory replacement housings and components.
• High-Output Performance & Neodymium Upgrade: Unlike typical 40-year-old vintage 421s that have lost magnetic flux over time and require +20dB of noisy pre-amp gain boost to achieve presence, this factory-refurbished unit drives a hot, punchy, pristine signal natively.
• Pristine High-Frequency Transient Response: Equipped with a modern, ultra-high-efficiency capsule, it delivers crystal-clear high-end detail, fast transients, and zero excessive preamp floor noise.
• Studio-Ready / No Cloudlifter Needed: Get the legendary look and authentic vintage housing on the outside, combined with the bulletproof, high-fidelity tracking performance of a modern workhorse on the inside. No inline preamp booster required.
• Condition: Excellent vintage condition. The light grey-beige body and grille are pristine, and the 5-position rotary bass switch operates smoothly.
• Includes: Original Sennheiser hard storage case.

Condition Report:

• Body & Grille: Beautifully preserved with minimal handling wear. Features the authentic blank factory service plate.
• Switch: 5-position bass filter clicks securely into each position.
• Audio Quality: Outstanding clarity, massive output, and zero excessive preamp noise.

SHIPPING NOTICE FOR US BUYERS: This item is shipping directly from a secure studio facility in Munich, Germany via premium, fully tracked, and insured DHL International Air. Total transit time to the United States typically averages 6–12 business days. The flat-rate shipping fee is fixed at checkout.