Leben CS-1000P Tube Power amplifier
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Expanding upon the triumph of the CS-660P, Leben has introduced the CS-1000P, a power amplifier with even greater capabilities- reaching up to 100W per channel. Keeping with the previous design, this new model features the option to switch between Pentode and Triode mode via a switch on the rear.
RS-28CX is equipped with the CR type equalizer based on GE(General Electric/USA) 12AT7 authorized by J.A.N.(Joint Army & Navy) standard of US Army, and can reproduce a very high quality and clear sound without adding any NFB.
To avoid compromising on sound quality, one of the solutions we adapted to totally protect the sensitive CR type equalizer from negative effects was to develop a separate power supply unit.
Likewise, some of the finest available high-end audio components were selected for the RS28C to keep the deflection of the RIAA curve below +/-0.3%.
Of course, the phono equalizer is only one of the strengths of the RS28C. Another notable feature is a very strong output voltage created by the Dual-Triode Tube 6CG7 of General Electric(USA) used for the line stage. Leben further selected the best quality tubes out of these and constructed a powerful SRPP type amplification which can supply power amplifiers with a maximum 80V of clean output signal.
In considering the fact that output voltage of a standard preamplifier is more or less 40V, the RS28C can output about two times as much voltage, which will drive power amplifiers with very low input sensitivity.
Likewise, for using the RS28C with a high sensitivity power amplifier, a 5-step attenuator is present in order to eliminate residual noise from speakers.
Leben also included two outputs (one fixed and one variable) in order to cope with requirements for adding a Sub-Woofer.
Features
- High power output tube KT120(Super KT88) 100W/ch(1KHz) at Pentode circuit (70W/ch at Triode). Pentode/Triode selector switch.
- Bias adjustment with a Cathode-direct meter Several type of output tubes are applicable by adjusting the cathodal electric current.
- Newly developed Orient-core output transformer A minimum loss and a Superior high-frequency response.
- Flat and wide Frequency Response A wide frequency response from 10Hz to 150KHz(-0dB) caters for digital audio formats such as SACD/HDCD.
- High rigidity solid aluminum insulators
- Super-high sensitivity bias meter made by a long-established manufacturer.
- High-grade Metal glaze resistors of below 1% error margin.
- High-grade 41-steps Detent Volume of ALPS.
- Made in Japan
Specifications
TUBES COMPLIMENT | KT120 x 4 6922/6DJ8(ECC88) x 2 6CG7/6FQ7 x 2 |
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OUTPUT POWER | 100W x 2 at 1KHz. | |
FREQUENCY RESPONSE | 10Hz - 150KHz. (-3dB) | |
INPUT SENSITIVITY | 0.4V at 50W | |
INPUT IMPEDANCE | 100K Ohms. | |
OUTPUT IMPEDANCE | 4/6/8/16 Ohms (Selectable) | |
POWER CONSUMPTION | ||
WEIGHT | 23.5 Kgs. | |
DIMENSIONS | 455 (W) X 200 (H) X 335 (D) mm | |
ATTACHMENT | Detachable AC Power Cable x 1 |