Rupert Neve Designs511 500 Series Microphone Preamp


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Rupert Neve Designs 511 500 Series Microphone Preamp

The Rupert Neve Designs Portico 511 is a single-channel microphone preamplifier that implements all the coveted features and usability of a larger Portico outboard rack unit into the 500-series format. The module boasts Rupert Neve’s signature Silk button, for added harmonics that result in a characteristically vintage tone reminiscent of its manufacturer’s early designs.While the 511 is advertised as a microphone preamplifier, it does not always have to be used in this way. Setting the gain knob at 0dB enables the module to accept line-level signals. 

Additionally, the 511 can power condenser miss and active DI boxes via Phantom Power, which can be activated simply by pushing the corresponding button. 

In terms of processing, the 511 features a variable high-pass filter that sweeps between 20-250 Hz. There’s also an eight-segment LED meter for effectively monitoring the output. 

Portico 511 Features

  • Sonically flexible microphone preamplifier in 500 Series format
  • Preamp circuitry from the 517 preamp
  • Sweepable highpass filter circuit from the 5012 preamplifier
  • Versatile tone shaping provided by the Silk/Texture circuit (from the Portico II channel strip)
  • Excellent sound quality and flexibility should make this a great preamp for any project


  • Number of Channels: Single
  • Inputs: 1x XLR, balanced
  • Output: 1x XLR, transformer-balanced
  • Phantom Power: 48V
  • Phantom Power Supplied by the 500 series rack power supply. Switch selectable on faceplate.
  • Maximum Output Level: +23dBu
  • Frequency Response: Main output, no load: +/- 0.1dBu from 10Hz to 31.5kHz -2.6dB @ 120kHz
  • THD: Total Harmonic Distortion and Noise @ 1 kHz, +20dBu output level, no load: better than 0.0025% @ 20 Hz, +20dBu output level, no load
  • 0.025% Typical (2nd and 3rd harmonic
  • Total Harmonic Distortion and Noise with SILK engaged TEXTURE @ min @ 100Hz, +20dBu input level, no load 0.015%, mostly 3rd harmonic (typical)
  • TEXTURE @ max: @ 100Hz, +20dBu input level, no load 2%, mostly 2rd harmonic (typical)
  • Noise: Noise measured at Main Output, un-weighted, 22 Hz - 22 kHz, source impedance 150 Ohms balanced. Noise performance can vary depending on the 500 series and/or interference from stray magnetic fields.
  • EIN: -126 dB 150 ohm
  • Gain: Unity Gain: better than -103dBV
  • With Gain @ +66 dB: better than -60dBV
  • Gain Range: Gain Unity up to +66 dB in 6 dB steps
  • Trim continuously adjustable from -6 dB to +6 dB
  • Controls: 1x Trim knob
  • 1x Gain knob
  • 1x High-Pass Filter knob
  • 1x Texture knob
  • 1x Phantom Power button
  • 1x Polarity Reverse button
  • 1x High-Pass Filter button
  • 1x Silk button
  • High-Pass Filter: High-Pass Filter continuously variable swept frequency from 20 Hz to 250 Hz
  • Slope: 12 dB/Octave
  • Meter: 8 segment LED meter
  • Power Requirements: Power Requirements @ +/-16VDC 100mA
Rupert Neve Designs 511 500 Series Microphone Preamp Reviews