Leben CS-600X Integrated Amplifier

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The Leben CS-600X integrated amplifier is one of the reasons why there is a Leben Audio Lovers’ Club in Japan and so many Leben Lovers around the World.

Two selections of output tubes: 6L6GC(5881) and optional 6CA7(EL34) 

By switching two selectors inside of the cabinet, you can choose either 6L6GC or 6CA7 (EL34). LED indicators on the front panel will show you which tube is applied.

A wide range of speaker applications

Multi output impedance selector: 4/6/8/16 ohms.

Flat and wide frequency response

A wide-ranged and flat frequency response up to 100KHz. Fully capable for digital audio formats such as SACD/HDCD.


  • Twin-triode tube 6CS7 for the first-stage amplification
  • WBT type speaker terminals
  • Heavy-duty output transformer for 50W grade amplifiers
  • Large capacity choke-coil: 5H350mA
  • Dumper tube 6CJ3 is applied to delay a supply of high voltage (B-Voltage) to output tubes in order to protect output tubes from damages and to lengthen their life
  • All high-end audio grade electrical components
  • Operation lamp indicator
  • 24K Gold-Plated Knobs
  • Side Wood-Panels

Five Inputs

  • CS-600 is equipped with 5 line inputs (RCA unbalanced) plus Tape Monitor


  • Power Amp Direct Switch
  • Muting Switch
  • Stereo/Reverse Switch
  • Variable Output Impedance: 4/6/8/16 Ohms
  • Tape Monitor Switch
  • Bass Boost Switch
  • Headphone Output
  • Speaker/Headphone Selector Switch
  • Tube Indicator Lamps
  • Operation Lamp Indicator.


  • Tubes Equipped: (4) 6L6GC (5881) SOVTEK, (EL34/6CA7 – Option), (4) 6CS7, (1) 6CJ3
  • Output Power: 32W x 2 (6L6GC) at 1KHz, 28W x 2 (EL34) at 1KHz
  • Frequency Response: 15Hz – 100KHz (-2 dB)
  • Distortion: 0.7%(10W)
  • Input Sensitivity: 900mV at 20W
  • Output Impedance: 4/6/8/16 Ohms (Selectable)
  • Weight: 22.5 Kgs.
  • Dimensions: 450 (W) X 360 (D) X 142 (H) mm
  • Attachment: Detachable AC Power Cable x 1
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