The line Amplifier Circuit consists of special selected Dual-Triode Tube 6CG7(General Electric/USA) by SRPP system to improve high-frequecy range of the sound, and can supply a strong signal of 52V to the power amplifier.
For lighting the heater of 6CG7 tubes, DC current(12V) is applied to minimize the noise of heating, and additionally, 60V bias is applied to the heater to cancel the noise caused from the heater.
Leben dared to choose a custom-made Carbon Film Resistor of +/-3% error margin to have a more natural and smooth sound instead of normal Metal Film Resistor of +/-1% error margin which makes the sound more hard and stiff.
A direct input terminal goes directly to the volume control to transmit a pure signal without passing via the contact points of the selector switch, therefore, a superior result is obtained when a phono preamplifier or a CD player is used through the Direct Input.
**Leben applied for the direct input circuit a highest audio-grade PCOCC-A shield wire produced by Oyaide Electric Co to achieve a pure signal transmission.
The highest audio-grade components are used for all essential parts:
| Tube compliment |
2 x 6CG7 (G.E.) or 12AU7A(for RS-100U) 1 x 6X5GT (Sylvania) |
|---|---|
| Gain | 23dB |
| Max. Output | 52V (Variable) & 0V - 52V(fixed) |
| Output Impedance | 600 Ohms |
| Residual Noise | 0.08mV. |
| Power Consumption | 23W |
| Weight | 7.5 kg |
| Dimensions | 390(W) x 230(D) x 142(H) mm (Incl. Side-panels & Legs) |
| Attachment | AC Power Cable. |