BRANDES Matched Tone Headphones

Circa 1940's (ESTIMATED)

An early audio accessory primarily associated with crystal radio sets and early wireless communication.

Use Case:

These high-impedance (1,000 to 2,000 ohms or more) headphones were used with early radio receivers and telegraph systems that could not drive modern low-impedance speakers.

The "Matched Tone" feature was a significant selling point, as Brandes selected receivers (earpieces) to ensure they produced the exact same volume and pitch, preventing a "mushy" or confusing sound that might make the operator miss weak signals.

They were essential for clear reception in the nascent days of radio broadcasting.

Historical Significance:

An iconic piece of early radio history and a great illustration of the term "headphones" in its original context.

• Pioneering Technology: They were among the most sensitive headphones available at the time and were widely adopted by amateur radio operators and early broadcast listeners.

• Industry Leadership: BRANDES was a well-known and respected maker of headsets in the early 20th century.

• Design Evolution: The robust bakelite earpieces and cloth-covered cords represent the standard for durable, functional communication technology before the shift to more compact, high-fidelity audio equipment.

(H-18.5cm x W-17.5cm x D-6cm)