LEBEN CS-600X

Pre owned. In excellent condition. No visible signs of wear. Comes with original manual and packaging.

Item on consignment.

The Leben CS600X is a unique tube integrated amplifier that combines a vintage aesthetic with outstanding performance, ideal for those looking to explore the world of vacuum tubes and speaker impedances. Produced by the small but renowned Japanese brand Leben, founded in the early 1990s, this amplifier stands out for its attention to detail and build quality, making it a highly valued choice for enthusiasts.

Although it does not feature digital inputs or a phono stage, the CS600X offers a headphone output and a range of advanced functions, including a two-stage Bass Boost and a stereo reverse function, which flips the signal phase by 180 degrees—a useful feature for optimizing listening in certain systems. This amplifier is designed for those who enjoy experimentation and fine-tuning, allowing users to explore different sound configurations to best suit their preferences.

Delivering 28W per channel, the CS600X is ideal for speakers with good efficiency, capable of reproducing the subtlest musical nuances with precision. The EL34 tubes are easily replaceable with alternatives such as the 5881, increasing output to 32W per channel and providing a different tonal character. Additionally, the option to use KT66, KT77, KT88, and 6550A tubes gives this amplifier a rare flexibility highly appreciated by audiophiles.

Internally, the CS600X is equipped with 12AU7A and 12BH7A tubes for the line stage and a 6CM3/6DN3 tube for the power section.

In terms of connectivity, the CS600X offers five single-ended inputs, a tape loop for those who still wish to record, and a direct feed to bypass the integrated preamplifier circuitry. It also includes a speaker impedance selector knob with options for 4, 6, 8, and 16 ohms. While impedance selection should start with the recommended value for the connected speakers, users can experiment with other settings to explore different sonic results.

Technical specifications:

• Output power: 32W x 2 (6L6GC) at 1 kHz; 28W x 2 (EL34) at 1 kHz
• Frequency response: 10 Hz – 100 kHz (-0.1 dB)
• Distortion: 0.7% (at 10W)
• Input sensitivity: 900 mV at 20W
• Output impedance: 4 / 6 / 8 / 16 Ohm (selectable)
• Weight: 22.5 kg
• Dimensions: 450 mm (W) × 360 mm (D) × 142 mm (H)