Description
TWO SETS OF OUTPUT TUBES: 6L6GC(5881) TUBES AND OPTIONAL 6CA7(EL34).
By changing two switches inside the cabinet, you can use either 6L6GC or 6CA7 (EL34) tubes, and the LED indicators on the front panel will show you which tube is in use.
DIRECT SWITCHING POWER AMPLIFIER AND INPUTS.
The «PREAMP-IN» terminals on the rear panel allow the CS-600 to be used as a power amplifier.
By activating a selector on the front panel, all functions can be bypassed, except for the volume control.
A WIDE RANGE OF SPEAKER APPLICATIONS
Multiple output impedance selector: 4/6/8/16 ohms.
FLAT AND WIDE FREQUENCY RESPONSE
A wide and flat frequency response of up to 100 kHz it is sufficient for future digital audio formats such as SACD/HDCD.
OTHER FEATURES
- 6CS7 double triode tube for first-stage amplification.
- WBT-type speaker terminals.
- High-resistance output transformer for 50W grade amplifiers.
- High-capacity choke: 5H350mA
- The 6CJ3 discharge tube (for use in colour TV) it is applied to delay the supply of high voltage (B voltage) to the output valves in order to protect them from damage and prolong their useful life.
- All high-end audio electrical components (capacitors, resistors)
- Operating lamp indicator
- A sequence of front-view designs for the CS-300/CS-300X.
- 24-carat gold-plated knobs.
- Wooden side panels.
FIVE TICKETS
The CS-600 is fitted with 5 line inputs (unbalanced RCA) plus a tape monitor.
COMPLETE FUNCTIONS FOR AN INTEGRATED AMPLIFIER.
- Power amplifier direct switch. (All functions except volume control are bypassed)
- Mute 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.
- Power lamp indicator.
CS-600 SPECIFICATIONS
| EQUIPPED TUBES | (4) 6L6GC (5881) SOVTEK, (EL34/6CA7 – Option) (4) 6CS7 (1) 6CJ3 |
|---|---|
| OUTPUT POWER | 32 W x 2 (6L6GC) at 1 kHz. 28 W x 2 (EL34) at 1 kHz. |
| FREQUENCY RESPONSE | 10 Hz – 100 kHz. (-0.1 dB) |
| DISTORTION | 0.7 % (10 W) |
| Input sensitivity | 900 mV at 20 W |
| Output impedance | 4/6/8/16 ohms (selectable) |
| ENERGY CONSUMPTION | |
| Peso | 22.5 kilograms. |
| DIMENSIONS | 450 (Width) x 360 (Depth) x 142 (Height) mm |
| ATTACHED | Detachable AC power cable x 1 |











Leben Hi-Fi Stereo Company is a Japanese valve amplifier manufacturer.





Luis R. Cruz (verified owner) –
From my point of view and experience, I consider the Leben CS600X to be an amplifier that goes far beyond simply delivering good sound. It is an amplifier crafted with care, featuring a vintage look and premium finishes. Its structure and materials are of great quality, the knobs and potentiometers turn smoothly, and the tactile feel is very good. The quality wood on its sides, the circuitry, the wiring—everything is of sublime quality. It has me astounded; paired with my ProAc D20R speakers, they provide a splendid soundstage and spatiality.
What has struck me most is the transparency, neutrality and the soundstage. It is true that it is reminiscent of a solid-state amplifier even though it is valve-driven, its crystal-clear and analytical sound brings this to mind, yet it still delivers that sweet and creamy touch of the valve in acoustic scenes with few instruments, along with surprising dynamics when called upon in complex moments with large orchestras. The bass is defined and controlled, the midrange very rich and crisp, with highly detailed treble. The headphone output is of very high quality; it is an amplifier that lets you forget about the system and just enjoy the music as it is. Versatile in its choice of valves, as well as in its settings. Without a doubt, a piece of craftsmanship by our friend Taku Hoyodo, one of the top 8 valve engineers in Japan.