LEBEN RS-30EQ

Phono Preamp with CR-Type Equalizer, Non-NFB

The Leben RS-30EQ phono preamplifier is an innovative product that combines the tradition of tube amplification with a CR-type equalization circuit, which is rarer compared to the more common negative feedback circuit. The result is a preamplifier that delivers superior sound quality while maintaining a robust and detailed design.

Equipped with a pair of dual-triode tubes (12AT7) for phono signal amplification, the RS-30EQ provides a total gain of 23.5dB, sufficient for moving-magnet (MM) cartridges, while the use of an external transformer is recommended for moving-coil (MC) cartridges. The heater voltage is managed by a silicon full-wave rectifier, and the power supply voltage is provided through a 6X5GT rectifier tube.

The build quality of the RS-30EQ is exceptional, comparable to that of the Leben CS300 integrated amplifier, with some parts being even more robust. The power supply components are mounted on a small fiber-composite board, instead of a conventional printed circuit board, while the rest of the components are supported by terminal strips. As with the CS300, the design follows a point-to-point wiring approach, ensuring a direct and clean connection.

The RS-30EQ also features additional internal shielding to minimize noise and hum, and the "orient-core" power transformer selected by Leben further enhances the sound quality. This phono preamp is an ideal choice for vinyl enthusiasts seeking a natural and detailed sound reproduction with particular attention to reducing external interference.

The Leben RS-30EQ phono preamplifier is an excellent choice for those looking for a well-built device that delivers immersive and precise sound, bringing a system that combines excellent performance with refined design to music exploration.

Technical Specifications:

• Tubes: 2 x JAN 12AT7A (G.E.), 1 x 6X5GT (G.E.)
• Gain: 23.5dB
• RIAA Curve: Less than +/-0.2%
• Input Impedance: 47 Kohm (Normal)
• Maximum Input: 400mV (2KHz)
• Output Voltage: 175mV
• Power Consumption: 17W
• Weight: 6.0 kg
• Dimensions: 340 (W) x 140 (H) x 240 (D) mm