The AKG K 135 is a pair of over-ear headphones designed for a range of audio applications, combining comfort and performance. These headphones are characterized by their lightweight construction, which makes them suitable for prolonged listening sessions. The K 135 features a closed-back design, which helps in isolating external noise and provides a more immersive listening experience. The ear cushions are soft and plush, ensuring a comfortable fit for extended use. The headphones are equipped with a foldable design, making them portable and easy to store when not in use. In terms of specifications, the K 135 boasts a frequency response range typically between 18 Hz to 20 kHz, allowing them to reproduce a wide range of sound frequencies. The impedance is usually around 55 ohms, making them versatile enough to work with various devices, including portable players and professional audio equipment. The nominal power handling is also adequate for various listening situations. The headphones are designed to deliver a balanced sound with clear highs, adequate mids, and decent bass response, making them suitable for both casual listening and professional applications. The durable build quality ensures that they can withstand regular use, further enhancing their appeal for both studio and personal use.