RS30-EQ

About the RS30-EQ

The Leben RS30-EQ is a phono preamplifier that combines traditional tube amplification with a CR-type equalization circuit without negative feedback (NFB), resulting in superior sound quality with minimal distortion. It uses two JAN 12AT7A dual-triode tubes for amplification and a 6X5GT rectifier tube for power supply. The design includes a high-quality 'Orient-Core' power transformer with shielding to minimize hum and noise. The RS30-EQ is hand-wired with point-to-point wiring and uses premium components to maintain RIAA curve accuracy within +/-0.2%. It provides a gain of 23.5dB, an input impedance of 47 kOhm, and an output voltage of 175mV, suitable primarily for moving magnet cartridges; moving coil cartridges require an external step-up transformer. The unit weighs 6 kg and measures 340 mm wide, 140 mm high, and 240 mm deep. It is praised for its natural, rich, smooth, and detailed sound, making it a favored choice among vinyl enthusiasts seeking high fidelity and low noise interference.