Rupert Neve Designs Portico 5024 Quad Microphone Preamp

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Incorporating four channels of renowned preamplification, independent silk controls, two channels of DI inputs, and an M-S Decoder into a 1U enclosure, the 5024 is a workhorse equipped to enhance the front end performance of any digital or analogue recording system. Each channel of the Portico 5024 is based around the custom transformers and class-A circuitry found in the best-selling 5012.
In addition to 72dB of gain, the 5024’s mic pres include individually selectable phase, mute, phantom power, a selectable frequency high pass filter, and the Silk circuit which yields the rich warmth and presence of the renowned classic designs. Channels 1 & 2 of the 5024 feature a high-Z input designed for instrument level sources. Channels 3 & 4 feature an M-S switch, which enables Mid-Side decoding without the use of multiple console channels.

Rupert Neve Designs Portico 5024 Features:

  • Silk
    Much could be written about this feature, suffice to say, that it gives a subtle option to enhance sound quality in the direction of vintage modules. The Silk button reduces negative feedback and adjusts the frequency spectrum to provide a very sweet and musical performance. We suggest you
    try it and make your own judgment.
  • M-S
    The M-S button engages Mid-Side decoding on channels 3 & 4. Channel 3 level controls the mid signal, and channel 4 level controls the side signal.
  • Instrument Inputs
    Balanced or unbalanced Hi-Z input for instruments using the Mic Pre’s gain circuitry.
  • Level Meter
    -30 dBu to +22 dBu
    With reference to the output
  • Mute
    Cuts of the output signal post metering and pre Buss Output. Be sure to mute the outputs before engaging phantom power.
  • High Pass Filter
    The High pass filter is a valuable aid in any signal chain but particularly so in a microphone preamplifier. Signals below 30 or 90 Hz can be attenuated at 12dB / Octave, leaving the range above this unaffected. This gets rid of building rumble, air handling motor hum etc.
  • Phantom Power
    Provides 48V phantom power to microphones

Rupert Neve Designs Portico 5024 Specifications:

  • Mic Pre
  • Frequency Response:
    Main Output, no load,
    –3 dB @ 2 Hz
    –3 dB @ 160 kHz
  • Noise:
    Measured at Main Output, unweighted, 22Hz-22kHz,
    Terminated 150 Ohms.
    With gain at unity better than –92 dBu
    With gain at 66 dB better than –56 dBu
    Equivalent Input Noise better than –123 dBu
  • Gain:
    Unity to +66dB in 6 dB steps,
    Trim continuously adjustable from –6dB to +6dB
  • Line Input:
    Trim continuously adjustable from –6dB to +6dB
  • Maximum Output Level:
    Maximum output from 20 Hz to 40 kHz is +25 dBu.
  • Phantom Power:
    48 Volts DC +/- 1%
  • Total Harmonic Distortion and Noise:
    @ 1kHz, +20 dBu output: Better than 0.002%
    As above, Silk Engaged: Better than 0.2% Second Harmonic
    @ 20Hz, +20 dBu out Better than 0.004%
    @ 20Hz, +20 dBu out Better than 0.020%
    IM Distortion: Better than 0.002%
  • Slew rate Better than 4 V/uS
    High Pass Filter:
    Frequency: Selectable either 30Hz or 90Hz
    Slope: 12 dB/Octave Bessel