RefPre is built for absolute transparency. Designed to capture the sound of the microphone without added coloration, its transformerless, minimal-path architecture delivers exceptional accuracy, low noise, and generous headroom. Originally developed for the Wolff Console, RefPre offers up to 60 dB of gain, with a dedicated Ribbon mode extending gain to 70 dB while automatically adjusting impedance and safely disabling phantom power. A switchable +10 dB boost further expands flexibility across demanding sources. Equally suited for microphones, line-level signals, and instruments, RefPre is an ideal partner for precision-critical applications, including sampling and emulation microphones that depend on a neutral front end. Specifications • Transformerless microphone preamp with stepped gain control (−10 dB to 60 dB)• Ribbon circuit with +10 dB gain, auto impedance adjustment, and phantom lockout• ±6 dB trim for precise level control• Continuous output fader• Frequency response ±0.5 dB from 10 Hz to 80 kHz• Ultra-low noise and distortion (−125 dBu EIN, 0.0005% THD at 60 dB gain)• High headroom, +28 dBu output• Switchable 80 Hz high-pass filter (12 dB/octave)• Signal LED (green = signal, red = near clip)• Front and rear mic input access• Front panel instrument input with dedicated Hi-Z amplifier• Polarity reverse and 48 V phantom power (muted switching)• Relay-based gain and switching for reliability
