Wolff Audio RefPre

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

US and EU parcels ship via UPS, ETA 1-7 working days from pickup day zero. That also applies to most locations worldwide.

All shipments are fully insured.

Bigger shipments requiring pallets or custom made crates ship to US, CA, JP, CN, AU and other outside of EU locations via DHL Air Freight, ETA is normally approx. 7-14 working days from pickup day zero.

Big shipments inside EU ship via different freight companies, recently mostly via ACE Logistics. Freight forwarders can use different courier companies for deliveries to final destinations.

Palletising and crating time can vary depending on the size of the shipment and packaging queue. We pack all our shipments with great care.

You are most welcome to pick your order up yourself from our Retrosonic Pro Audio showroom, studio and warehouse in Tallinn, Estonia.

We ship worldwide – contact us for a personal shipping quote or any other questions.

VAT (Value Added Tax) can be deducted if you have a company with a valid EU VAT number or if you're based outside of the EU. Non-EU buyers pay all and any import tax and duty as regulated by their local customs.