In perfect working condition, but the headband is flaking off the pleather.

The Beyerdynamic DT 770 Pro 80 Ohm is a professional, closed-back circumaural studio headphone designed for critical monitoring, mixing, and recording, featuring an 80-ohm impedance that offers greater versatility and volume from standard audio interfaces and portable devices compared to higher-impedance models.

• Sound Quality: It utilizes a dynamic driver with an innovative bass reflex system for extended low-end response and a diffuse-field equalized frequency response of 5 Hz to 35,000 Hz. The headphones are known for their top-notch impulse response, providing analytical high frequencies and crisp, defined ultra-low bass.
• Design and Comfort: The over-ear design features soft, replaceable velour ear pads and a robust, adjustable spring steel headband to ensure comfort during long studio sessions. The closed-back construction provides approximately 18 dBA of ambient noise isolation, preventing sound bleed into microphones during tracking.
• Build and Connectivity: Made in Germany, the headphones weigh approximately 270 g (without cable) and feature a durable, single-sided 3-meter straight cable. They connect via a gold-plated 3.5 mm stereo jack and include a 6.35 mm (1/4") adapter.
• Technical Specs:
• • Nominal Impedance: 80 Ohms
  • Nominal SPL: 96 dB
  • Total Harmonic Distortion (THD): <0.2%
  • Power Handling: 100 mW