Beyerdynamic T1 2nd Gen Headphones

Here we have a nice pair of premium headphones from German company Beyerdynamic. They are in great cosmetic condition and are supplied in original packaging BUT unfortunately only one channel is working so for spares only.
Beyerdynamic Say….
Like its predecessor the T 1 of the 2. generation has a semi-open design, which features a spacious sound and detailed hi-fidelity. Furthermore, the 2. generation of the T 1 has many optimised details. A highlight is the audiophile textile-coated, detachable connecting cable, which is shielded over its whole length and provides the best emission and radiation protection. Inside the cable conductors are made of OCC 7N copper to ensure an excellent music transmission. In order to connect the cable to the headphone, there are 2 x gold-plated mini jack connectors (3.5 mm) with a locking mechanism. In order to connect the cable to hi-fi systems, the other end of the cable is provided with a gold-plated mini jack connector (3.5 mm) and gold-plated screw-on 1/4″ adapter. As an option the connecting cable is also available with a 4-pin XLR connector for a balanced connection to appropriate headphone amplifiers. The high quality of the headphone is completed by viscoelastic breathable ear pads that enable a very pleasant comfort over several hours. The T 1 is supplied with a special high-quality hard case for storage or transport.
Features:
Semi-open design (attenuates ambient noises without completely muffling them)
Outstandingly neutral
Tesla technology with highest efficiency
Double-sided, detachable cable
Audiophile, textile-coated connecting cable
Conductor inside the cable made of OCC 7N copper
Made in Germany
5-year warranty
Specifications:
Transducer Type: dynamic
Operating Principle: Semi-open
Frequency Response: 5 – 50,000 Hz
Impedance: 600 Ω
Nominal SPL: 102 dB (1 mW / 500 Hz)
T.H.D.: < 0.05% (1 mW / 500 Hz)
Power handling capacity: 300 mW
Max. SPL: 126 dB (300 mW / 500 Hz)
Sound Coupling To The Ear: Circumaural
Headband Pressure: Approx. 2.8 N
Cable: 3 m / double-sided / balanced (4-pin)
Connector: Gold-plated 3-pole mini stereo jack (3.5 mm) & 1/4″ adapter (6.35 mm)
Weight: 360 g

For a review from What Hi-Fi? magazine please click here