Microtech Gefell MV 692 M70 Original Nickel Capsule Reskinned Thiersch | 48V XLR Conversion by Thiersch 1973S

GEFELL MV 692 + M70 A CLASSIC OF EAST GERMAN STUDIO ENGINEERING Vintage Professional FET Condenser Microphone | Original Nickel Capsule Reskinned by Siegfried Thiersch | 48V XLR Conversion by Thiersch The Gefell MV 692 with M70 capsule represents a fascinating high end professional microphone . Developed for demanding broadcast and studio applications, this modular condenser microphone belongs to a generation of precision instruments that served radio stations, recording studios and classical music productions for decades. At its heart is the legendary Gefell M70 cardioid capsule, featuring an exceptionally thin nickel diaphragm and a distinctive acoustic character: articulate, natural and detailed, with a smooth upper-frequency response that distinguishes it from many modern condenser microphones. What makes this particular microphone especially interesting is its exceptional technical provenance. Both the capsule's nickel diaphragm and the amplifier's modern XLR conversion have been professionally restored or modified by Siegfried Thiersch, a former senior microphone engineer at Gefell with an important connection to the development and manufacture of these historical microphone systems. The M70 capsule has been professionally reskinned by Thiersch, preserving its original nickel-diaphragm design while renewing its most delicate acoustic component. The MV 692 amplifier has also been converted by Thiersch for modern 48V phantom powering through a standard three-pin XLR connection. The result is a remarkable combination: an original vintage Gefell microphone system, retaining its historical engineering character, with its most important technical interventions carried out by a specialist intimately familiar with the original technology. A professional recording instrument with genuine historical pedigree, carefully prepared for modern studio use. OPTICAL CONDITION Excellent Vintage Condition The microphone is preserved in beautiful vintage condition, displaying normal signs of age and handling consistent with its history. The original metal construction and distinctive appearance of the Gefell modular system have been retained. The M70 capsule's nickel diaphragm has been professionally renewed by Siegfried Thiersch and is in excellent condition. Please examine the photographs for a detailed impression of the microphone's cosmetic condition. TECHNICAL CONDITION Professionally Serviced and Tested - GRADE A The microphone has been thoroughly checked and is operating correctly. The M70 capsule has been professionally reskinned with a nickel diaphragm by Siegfried Thiersch. The MV 692 amplifier has been professionally converted by Thiersch to operate with standard 48V phantom power through a three-pin XLR connection. Both integrated switches have been tested and function correctly: –10 dB attenuation pad Low-cut filter The microphone is ready for use with modern professional microphone preamplifiers and recording interfaces providing standard 48V phantom power. THIS LISTING INCLUDES 1 × Gefell MV 692 FET microphone amplifier, converted to 48V XLR by Siegfried Thiersch. 1 × Gefell M70 cardioid condenser capsule, professionally reskinned with a nickel diaphragm by Siegfried Thiersch. BUILD & DESIGN — THE GEFELL MODULAR SYSTEM The MV 692 belongs to Gefell's celebrated family of modular professional condenser microphones. Developed during the era of East German broadcasting and recording technology, these systems were designed to meet the demanding requirements of professional sound engineers working in radio, television, recording studios and concert halls. Unlike microphones built around permanently integrated capsules, the Gefell MV system separates the microphone amplifier from the acoustic transducer. Offering a verity of interchangeable product through systems A single amplifier could be used with different capsules, allowing engineers to select the appropriate polar pattern and frequency response without replacing the entire microphone. The MV 692 represents a later development within this family, incorporating sophisticated solid-state electronics and a practical, compact construction. Its discrete FET-based amplifier circuit and transformer-balanced output were designed to deliver a clean, reliable signal suitable for professional recording equipment. Two integrated switches provide additional flexibility. The –10 dB attenuation pad allows the microphone to accommodate stronger acoustic signals, while the low-cut filter reduces unwanted low-frequency energy such as mechanical vibration, handling noise and room rumble. This particular MV 692 has been professionally adapted for modern studio . The original 12V powering arrangement has been converted to standard 48V phantom power, with a conventional three-pin XLR output. This eliminates the need for the historical external powering equipment and makes the microphone considerably more practical in contemporary…