Bang & Olufsen U 70 Headphones (1978–1984)

B&O U 70 Stereo Headphones Overview

The Bang & Olufsen U 70 headphones were the company’s first step into the world of personal audio. Produced between 1978 and 1984, they quickly became a popular addition to the B&O lineup.

These headphones were designed as semi-open headphones, allowing a small amount of ambient sound to pass through. As a result, the listener remained aware of their surroundings while still enjoying high-quality audio.

Orthodynamic Driver Technology in U 70

The U 70 headphones were described as orthodynamic, meaning they used a single-point driven membrane. In simpler terms, this design relied on a traditional coil-driven speaker instead of electrostatic technology.

This construction provided a balanced and natural sound profile, which matched Bang & Olufsen’s focus on clarity and precision.

Design and Comfort 

The U 70 featured a sleek and minimalist Danish design, combined with excellent comfort for long listening sessions.

• Lightweight construction

• Soft leatherette ear pads

• Ergonomic fit for extended use

Over time, the leatherette material may deteriorate. However, this does not affect the sound performance of the headphones.

Compatibility with B&O Systems and Connectivity with Bang & Olufsen U70

The Bang & Olufsen U 70 headphones were equipped with:

• Long cable for flexible use

• 6.35 mm (¼”) stereo jack plug

This made them compatible with a wide range of classic B&O products, including:

• Beomasters

• Beocenters

• Selected Beocord systems

• Early Beovision 33XX televisions

They were suitable for both private listening and monitoring purposes.

Packaging and Presentation of U 70

In later production years, the U 70 was delivered in a premium presentation box. The design featured artwork inspired by Leonardo da Vinci, incorporating the headphone itself in a unique and artistic way.

This reflected Bang & Olufsen’s strong emphasis on combining technology with visual design.

Replacement and Legacy of B&O U 70

The U 70 remained one of the most substantial headphones in the Bang & Olufsen range during its time. It was eventually replaced by the B&O Form 1 headphones, which continued the brand’s focus on design and usability.

Today, the U 70 is considered a vintage classic, appreciated by collectors and enthusiasts of Bang & Olufsen audio equipment.