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Solid State Logic VHD+ Pre 500 Series Microphone Preamplifier
Infused with technology from SSL's flagship large-format analog console, the Solid State Logic VHD+ Pre is a single-channel 500 Series microphone preamplifier that offers a premium gain stage and customizable harmonics for musicians and engineers at any level. Given its sonic versatility and modular form factor, the VHD+ Pre is a stellar addition to home studio setups, mobile recording rigs, and racks in commercial facilities.

Between the +75 dB of gain available on the mic preamp and ±20 dB of gain via the trim knob, the VHD+ Pre delivers bountiful boost for low-output ribbon and dynamic mics or even the quietest of sources. Of course, switchable 48V phantom power is provided for condenser mics. Use the VHD control to add your choice of 2nd or 3rd order harmonics (or a blend of both) for characterful coloration. You can also keep the low-end power under control by activating the high-pass filter, which features a continuously variable frequency control from 15 to 500 Hz.

Technology from the Duality Console
The VHD+ Pre module for the popular 500 Series format modular rack platform makes the uniquely versatile VHD-based preamp technology from Duality, SSL's industry-leading large-format studio console, available for studios of all sizes. The VHD+ Pre module is an immensely versatile recording and processing device. It can deliver ultraclean SSL SuperAnalogue-grade recordings but also features a switchable VHD mode. SSL's patented Variable Harmonic Drive (VHD) system uses a 100% analog signal path to generate rich harmonic distortion.

VHD Coloration
Increase the VHD input gain and the Variable Harmonic Drive process introduces either 2nd or 3rd harmonic distortion or a blend of the two to your source material. At lower gain settings, it adds gentle valve-style warmth or a touch of transistor edge. As the gain is increased, the more extreme the distortion becomes. At high-gain settings, it delivers fierce trashy transistoresque grunge.

Key Features
  • SSL SuperAnalogue-grade preamp with up to +75 dB of preamp gain
  • Trim knob with ±20 dB range
  • 2nd order harmonics (valve warmth to extreme distortion)
  • 3rd order harmonics (transistor edge to totally trashed)
  • Absolute control via 2nd and 3rd order harmonic blend
  • Variable Harmonic Drive (VHD) in/out switch
  • Switchable high-pass filter with variable frequency selection from 15 to 500 Hz (18 dB/octave)
  • +48V phantom power
  • Polarity invert switch
  • Pad switch (-20 dB)
  • Front-panel 1/4" TRS balanced line input, also accepts unbalanced 1/4" TS Hi-Z input
  • Hi-Z switch switches input impedance (1.2 or 10 kilohms for the mic input, 10 kilohms or 1 megohm for the front-panel jack)
  • Tricolor LED signal level indicator

Box Contains

    Solid State Logic VHD+ Pre 500 Series Microphone Preamplifier
  • 1 x Solid State Logic Microphone Preamplifier

Box Contains

    Solid State Logic VHD+ Pre 500 Series Microphone Preamplifier
  • 1 x Solid State Logic Microphone Preamplifier

BrandSolid State Logic
ModelSolid State Logic 729731X2
MPNSO729731X1V2
TypeMicrophone Preamp
Number of Channels1
Inputs1 x Balanced Mic Input via 500 Series Multipin Connector 1 x 1/4 TRS Balanced/Unbalanced Line/Hi-Z
Output1 x Balanced Line Output via 500 Series Multipin Connector
Phantom Power48 VDC
Pad-20 dB
Gain RangeMic Gain: +20 to +75 dB Trim: -20 to +20 dB
High-Pass Filter18 dB/Octave at 15 to 500 Hz (Continuously Variable Frequency)
Nominal Input Level+4 dBu
Nominal Output Level+4 dBu
Input ImpedanceMic: 1.2 or 10 Kilohms (Switchable) Line/Hi-Z: 10 Kilohms or 1 Megohm (Switchable)
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