Sennheiser HD 620S B-Stock

Unlike most closed-back headphones, the Sennheiser HD 620S features 42mm angled transducers that create a wide, panoramic soundstage, all housed in a sleek black design that blends high-end acoustics with modern aesthetics. Equipped with 33mm diaphragms, the headphones delivers a reference-grade listening experience, reproducing frequencies from 6Hz to 30kHz with exceptionally low distortion – and boasting a THD value of less than 0.25% at 1kHz/90dB SPL. Despite its powerful bass, the sound remains perfectly balanced, ensuring clear, uncoloured vocal reproduction. With a maximum sound pressure level of 105dB at 1kHz/1Vrms, the HD 620S offers a detailed and dynamic sound signature, ideal for immersive listening.

In June 1945, Prof. Fritz Sennheiser founded the Wennebostel Laboratory, which initially produced measuring equipment. Commissioned by Siemens in 1945, the young company developed the MD-1 microphone, which was launched in 1946. After the development of further microphones, the company was renamed Sennheiser Electronic in 1958. Two years later, Sennheiser introduced the MD 421 dynamic microphone, which is still in production today and still held in high esteem by many sound engineers. Further groundbreaking developments, such as the HD 414 headphones and the classic MD 441 microphone, hugely enhanced the company's international reputation, eventually making Sennheiser one of the leading manufacturers of microphone and headphone systems in the world.