Sennheiser – HD 620S

Sound Review:

The Sennheiser HD 620S is a reference-class pair of open-back headphones designed for audiophiles seeking highly accurate and natural sound. It delivers an impressively balanced and detailed audio experience, with a wide soundstage that makes it perfect for critical listening. The headphones are lightweight and comfortable, ideal for long sessions, though the open-back design makes them unsuitable for noisy environments. While they may lack the bass-heavy tuning preferred by casual listeners, their transparent sound signature is a dream for purists and professionals looking for clarity and precision.

Specifications:

  • Cable length – 1.8 m
  • Ear coupling – Around ear
  • Ear pad material – Artificial leather on Polyurethane basis
  • Frequency response – 6 Hz – 30 kHz
  • Nominal impedance – 150 Ohm ()
  • Package dimensions – 237x191x96mm (LxBxH)
  • Package weight – 670 g
  • Sound pressure level (SPL) – 110 dB / 1 V RMS
  • Storage temperature – -15°C to 65°C
  • THD, total harmonic distortion – <0,05 % (1kHz/90 db SPL)
  • Transducer principle – dynamic, closed