This list is for one Beyerdynamic Transistophone S84 in perfect working condition.rare vintage portable transistor-powered amplifier and monitoring unit made by Beyerdynamic in Germany during the 1960s and early 1970s. It was designed primarily for professional broadcast, film, and field recording applications.

Key features include:

• Portable, battery-powered operation using transistor circuitry.
• Built to drive high-impedance dynamic headphones and monitor microphones.
• Rugged metal construction suitable for location recording.
• Typically used alongside vintage broadcast microphones and reel-to-reel recorders from companies such as Nagra, Neumann, and Sennheiser.
• Collectible today because of its high build quality and historical significance in professional audio.

Collectors often pair the S84 with vintage Beyerdynamic headphones or use it as a period-correct accessory for classic field recording equipment.

Missing Beyerdynamic logo in front.

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