Rupert Neve Designs

collapse expand iconDescription

The Rupert Neve Designs Portico 511 500-Series Mic Preamp module provides an unparalleled level of control and sonic versatility for professional studios and home recordists alike. Building on the pristine sound of RND's acclaimed 5017 preamp and combining it with a sweepable high-pass filter and transformer-based "Texture" circuit derived from their flagship Portico II Channel, the 511 offers a wealth of tonal options in a single-space 500-series module.

A Powerful Preamp at the Core

At the heart of the 511 lies a transformer-coupled preamp based on RND's 5017 design that provides up to 66 dB of gain in precise 6 dB increments. With a wide gain range, high headroom and low noise floor, the 511 can handle a variety of microphone and line level signals with ease.

Shape Your Sound with Variable Texture Control

One of the 511's most unique features is its Texture control, which allows you to adjust the amount of musical harmonic content in the signal by reducing negative feedback in the output transformer. At its maximum setting, Texture adds roughly 10 times the harmonic distortion of RND's original Silk circuit, providing a range of tonal options from pristine and clean to warm and saturated.

Tailor the Low End with a Sweepable High-Pass Filter

The 511 incorporates a high-pass filter from RND's 5012 module, allowing you to filter out unwanted low frequencies below the selected cutoff point. With a sweep range of 20 to 250 Hz, the high-pass filter gives you precise control over the low end to tighten up your sound.

A Module for Every Application

Whether you need a transparent preamp for vocals and acoustic instruments or a harmonically rich preamp to drive electric guitars and keyboards, the Rupert Neve Designs Portico 511 has you covered. With a versatile feature set and signature RND sound quality, the 511 is a must-have module for any professional or home studio.

Rupert Neve Designs Portico 511 500-Series Mic Preamp with Texture Control
Rupert Neve Designs Portico 511 500-Series Mic Preamp with Texture Control

collapse expand iconFeatures

  • 12-way precision rotary switch controls gain from 0 to 66 dB in 6 dB steps
  • Continuously variable +/-6 dB level control
  • Silk circuit, reduces negative feedback, adding harmonic content as needed
  • Red Silk accentuates the saturation in the mid and high frequencies
  • Same presence and sweetness found in standard Portico Series modules

collapse expand iconSpecs

  • Noise: Measured at Main Output, un-weighted, 22Hz-22kHz, source impedance 150 Ohms balanced. Noise performance can vary depending on the 500 series and / or interference from stray magnetic fields.
  • Unity Gain Better than -103dBV
  • With Gain @ +66dB Better than -60dBV
  • Equivalent Input Noise -125dB
  • Frequency Response
  • Main output, no load Main Output +/- 0.1dBu from 10Hz to 31.5kHz -2.6dB @ 120kHz
  • Maximum Output Level +23dBu
  • Total Harmonic Distortion and Noise @ 1kHz, +20dBu output level, no load. Better than 0.0025% @ 20Hz, +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)
  • Gain Unity up to +66dB in 6dB steps. Trim continuously adjustable from -6dB to +6dB.
  • Phantom Power Supplied by the 500 series rack power supply. Switch selectable on faceplate.
  • High Pass Filter Continuously variable swept frequency from 20Hz to 250Hz.
  • Slope: 12dB/Octave
  • Power Requirements @ +/-16VDC 100mA