Wolff Audio RefPre

Wolff Audio

Wolff Audio RefPre

€769,00

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SKU: 58505
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Expect in stock: February 1, 2027

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Wolff Audio RefPre 500 Series – a transformerless microphone preamplifier in 500 Series format, designed for critical recording and sampling applications demanding absolute transparency.

The 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.

A 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).

KEY FEATURES

  • Transparency: Transformerless path, 0.0005% distortion, -125 dBu EIN noise floor.
  • Precise Control: Stepped gain -10 to +60 dB (10 dB steps) + ±6 dB trim.
  • Ribbon Mode: Additional 10 dB gain (total 70 dB), auto impedance matching, phantom lockout.
  • Frequency Response: ±0.5 dB from 10 Hz to 80 kHz – full-spectrum precision.
  • High Headroom: +28 dBu – handles high-output microphones without distortion.
  • Instrument Input: Dedicated Hi-Z preamp on front panel (for guitars and basses).
  • Signal Monitoring: LED indicator (green on signal, flashing red at +18 dBu).
  • Connectivity: XLR inputs (front and rear), polarity reverse, 48V phantom with safety lockout.

TECHNICAL SPECIFICATIONS

  • Format: 500 Series
  • Type: Microphone/Instrument Preamp (Transformerless)
  • Gain: -10 dB to +60 dB (stepped), +70 dB in Ribbon mode
  • Trim: ±6 dB
  • Equivalent Input Noise (EIN): -125 dBu
  • THD Distortion: 0.0005% at 60 dB gain
  • Frequency Response: 10 Hz – 80 kHz (±0.5 dB)
  • Headroom: +28 dBu
  • Filter: 80 Hz High-Pass (12 dB/octave, switchable)
  • Inputs: XLR (front and rear), Hi-Z Instrument (1/4" jack)
  • Phantom Power: 48V with lockout in Ribbon mode

Returns

We want you to be sure of your choice and that the goods fit 100%.

For this reason, you have 30 days to test the product, during which you can return it without giving a reason.

It is important to keep the factory appearance of the goods, consumer properties and full equipment (original packaging, labels, manuals, software CDs, all inserts, everything that was included in the delivery).

If you have decided to return the goods, please write to us at return@wiredtunes.pl, after which we will contact you and inform you about the next steps of the procedure.

Please note that refunds are not available for:

  • Cables and connectors
  • Software
  • Devices with a used voucher and serial numbers for which they were registered
  • Custom accessories (earbuds, earbuds)
  • Needles and cartridges
  • Care and hygiene products

Returns

We want you to be sure of your choice and that the goods fit 100%.

For this reason, you have 30 days to test the product, during which you can return it without giving a reason.

It is important to keep the factory appearance of the goods, consumer properties and full equipment (original packaging, labels, manuals, software CDs, all inserts, everything that was included in the delivery).

If you have decided to return the goods, please write to us at return@wiredtunes.pl, after which we will contact you and inform you about the next steps of the procedure.

Please note that refunds are not available for:

  • Cables and connectors
  • Software
  • Devices with a used voucher and serial numbers for which they were registered
  • Custom accessories (earbuds, earbuds)
  • Needles and cartridges
  • Care and hygiene products

Warranty

We care about our customers and carefully select the producers and products that we present in Wired Tunes, which is why we are sure of their quality. If the product does not meet our standards, you will not find our catalog on the list.

Our warranty is 36 months for all products and 60 months for ADAM Audio products.

Except for consumables, strings, tubes and crossfaders, and products showing signs of misuse.

In the event of damage, please contact us via support@wiredtunes.pl, after which we will contact you and inform you about the next steps of the procedure.

If the product cannot be repaired, it will be replaced with a new one, or in the absence of an available model, we will replace it with an analogous one in the same price range or refund the entire amount that has been paid. The most important thing is that the product is used properly.

Warranty

We care about our customers and carefully select the producers and products that we present in Wired Tunes, which is why we are sure of their quality. If the product does not meet our standards, you will not find our catalog on the list.

Our warranty is 36 months for all products and 60 months for ADAM Audio products.

Except for consumables, strings, tubes and crossfaders, and products showing signs of misuse.

In the event of damage, please contact us via support@wiredtunes.pl, after which we will contact you and inform you about the next steps of the procedure.

If the product cannot be repaired, it will be replaced with a new one, or in the absence of an available model, we will replace it with an analogous one in the same price range or refund the entire amount that has been paid. The most important thing is that the product is used properly.

Fast Delivery

All orders placed on our online store are delivered using the following delivery methods:

  • DPD Courier
  • UPS Courier
  • GLS Courier
  • DB Schenker

For orders valued up to 250 EUR, the delivery cost:

  • 15 euros: Germany, Belgium, Czechia, Hungary, Latvia, Luxembourg, Austria
  • 20 euros: Italy, Denmark, Estonia, France, Lithuania, Netherlands, Romania, Slovakia
  • 30 euros: Bulgaria, Croatia, Cyprus, Finland, Greece, Ireland, Malta, Portugal, Slovenia, Spain

For orders above 250 EUR, delivery is free.

The delivery time is typically 7 days.

For oversized orders, we use carriers such as DPD, GLS, and DB Schenker. The store manager will provide information on the cost and delivery time when your order is accepted.

Fast Delivery

All orders placed on our online store are delivered using the following delivery methods:

  • DPD Courier
  • UPS Courier
  • GLS Courier
  • DB Schenker

For orders valued up to 250 EUR, the delivery cost:

  • 15 euros: Germany, Belgium, Czechia, Hungary, Latvia, Luxembourg, Austria
  • 20 euros: Italy, Denmark, Estonia, France, Lithuania, Netherlands, Romania, Slovakia
  • 30 euros: Bulgaria, Croatia, Cyprus, Finland, Greece, Ireland, Malta, Portugal, Slovenia, Spain

For orders above 250 EUR, delivery is free.

The delivery time is typically 7 days.

For oversized orders, we use carriers such as DPD, GLS, and DB Schenker. The store manager will provide information on the cost and delivery time when your order is accepted.