Sensor 2 MkII

About the Sensor 2 MkII

The RCM Audio Sensor 2 MkII is an advanced phono preamplifier designed for both moving magnet (MM) and moving coil (MC) cartridges. It features an 8-way DIP switch for precise load impedance and gain adjustments, allowing optimal cartridge matching. The device outputs a high-level signal of 2 volts, matching CD player output levels, which requires up to 76 dB amplification for low-output MC cartridges. It supports both balanced and single-ended outputs, with a fully balanced internal circuit to maximize dynamic range and minimize noise. The RIAA correction is performed by a two-step passive system using hand-selected low-noise resistors and polypropylene capacitors, ensuring signal fluctuations below 0.3 dB across the 20 Hz to 20 kHz range. The power supply is external and housed separately to reduce noise and distortion, featuring a symmetrical design with carefully selected capacitors and low output impedance. The chassis is made from non-magnetic materials with a hollow rectangular cross-section to reduce mechanical resonance. The Sensor 2 MkII is praised for its increased dynamics, lower noise floor, and expanded soundstage, offering exceptional value at its price point.