{"product_id":"wolff-audio-refpre","title":"Wolff Audio RefPre","description":"\u003cdiv lang=\"en\"\u003e\n\u003cp\u003e\u003cstrong\u003eWolff Audio RefPre 500 Series\u003c\/strong\u003e – a transformerless microphone preamplifier in 500 Series format, designed for critical recording and sampling applications demanding absolute transparency.\u003c\/p\u003e\n\n\u003cp\u003eThe RefPre is a precision instrument that captures sound without any coloration, preserving complete fidelity to the source. Thanks to its minimalist transformerless architecture and carefully optimized signal path, the preamp delivers exceptionally clean sound with extremely low self-noise (-125 dBu EIN) and distortion as low as 0.0005% at 60 dB of gain. The unit features stepped gain control from -10 dB to +60 dB in 10 dB increments, plus an additional ±6 dB trim control for precise calibration.\u003c\/p\u003e\n\n\u003cp\u003eA unique feature is the dedicated ribbon microphone mode, which automatically adjusts impedance, adds 10 dB of gain (total 70 dB), and locks out phantom power to protect delicate ribbon transducers. The continuously adjustable output fader enables precise signal level control, while the switchable 80 Hz high-pass filter (12 dB\/octave) eliminates unwanted low-frequency rumble. The RefPre is an ideal choice for working with reference microphones (Earthworks, Neumann) and emulation systems (Slate VMS).\u003c\/p\u003e\n\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransparency:\u003c\/strong\u003e Transformerless path, 0.0005% distortion, -125 dBu EIN noise floor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Control:\u003c\/strong\u003e Stepped gain -10 to +60 dB (10 dB steps) + ±6 dB trim.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRibbon Mode:\u003c\/strong\u003e Additional 10 dB gain (total 70 dB), auto impedance matching, phantom lockout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e ±0.5 dB from 10 Hz to 80 kHz – full-spectrum precision.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Headroom:\u003c\/strong\u003e +28 dBu – handles high-output microphones without distortion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument Input:\u003c\/strong\u003e Dedicated Hi-Z preamp on front panel (for guitars and basses).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Monitoring:\u003c\/strong\u003e LED indicator (green on signal, flashing red at +18 dBu).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e XLR inputs (front and rear), polarity reverse, 48V phantom with safety lockout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e 500 Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Microphone\/Instrument Preamp (Transformerless)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain:\u003c\/strong\u003e -10 dB to +60 dB (stepped), +70 dB in Ribbon mode\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrim:\u003c\/strong\u003e ±6 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquivalent Input Noise (EIN):\u003c\/strong\u003e -125 dBu\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD Distortion:\u003c\/strong\u003e 0.0005% at 60 dB gain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 10 Hz – 80 kHz (±0.5 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadroom:\u003c\/strong\u003e +28 dBu\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter:\u003c\/strong\u003e 80 Hz High-Pass (12 dB\/octave, switchable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e XLR (front and rear), Hi-Z Instrument (1\/4\" jack)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhantom Power:\u003c\/strong\u003e 48V with lockout in Ribbon mode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Wolff Audio","offers":[{"title":"Default Title","offer_id":58444629049676,"sku":"58505","price":769.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/9854\/1644\/files\/WolffAudioRefPre.jpg?v=1786980132","url":"https:\/\/noiseroom.lt\/products\/wolff-audio-refpre","provider":"Noise Room","version":"1.0","type":"link"}