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HomepageMic PreampsMulti-Channels Mic-Preamp › Solid State Logic XLogic VHD
Solid State Logic XLogic VHD

The Alpha VHD-Pre offers four of SSL's widely acclaimed VHD Pre circuits in compact 1U format. 4 Ch. of ultra-clean SSL grade preamps.

First featured on our flagship Duality console and now the go to circuit for leading engineers worldwide, the VHD Pre is a patented SSL preamp design that can deliver ultra-clean SSL grade recordings but also features a patented 'Vriable Harmonic Drive' circuit which can be switched into the signal path. The Variable Harmonic Drive circuit uses a 100% analogue signal path to generate rich harmonic distortion. As you increase the input gain, the Variable Harmonic Drive circuit 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 until at high gain settings it delivers fierce trashy transistoresque grunge. VHD pre's give the user ultimate versatility from a studio grade preamp. Whether it's ultra-clean traditional SSL, subtle warming or totally trashy transistor distortion. VHD delivers a uniquely versatile pallette of rich analogue character that can be applied as a mic pre, instrument DI or line level processing device.

Each Pre is a simple analogue device with XLR in/out on the back, an instrument level 1/4" jack on the front panel. Each circuit has a Hi Z switch to accommodate mic, line and instrument level signals, a PAD switch to facilitate use as a line level processing device and 48v phantom power switch. There are three rotary controls: Input Level, VHD and Output Level.
  • Four ultra-clean SSL preamps with 75dB of gain
  • Independently switched 48V phantom power
  • 20dB Pad switches that illuminate to indicate overload
  • Hi Z switches to accommodate mic, line and instrument level signals
  • Four independent Variable Harmonic Drive systems
  • Front panel 1/4" jack instrument/line level inputs with passive DI type impedance detection and level matching
  • Individual input, output and VHD controls for each section
  • Rear panel XLR mic/line inputs and XLR outputs
  • Specifications
    Physical: *
    Depth : 230mm / 9" casing only
    Height : 44.5mm / 1.75" (1 RU)
    Width : 438mm / 17.25" casing only
    482mm / 19" inc' rack ears
    Weight : 2.6kg / 6 pounds
    Power : < 20 Watts
    Boxed size : 320mm x 550mm x 80mm
    12.75" x 21.75" x 3.25"
    Boxed weight : 3.5kg / 8 pounds

    * All values are approximate

    Power Supply : IEC320 3-pin connector, 100 - 240 Vac, 50 - 60 Hz
    Analogue I/O
    Microphone : Balanced, 3-pin XLR-F, Zin = 1k (10k for Hi Z)
    Instrument : Un-balanced, ¼" Mono Jack, Zin = 1M
    Output : Balanced, 3-pin XLR-M, Zo = 40
    Power : 5-pin 180° DIN connector, +5Vdc, ±15Vdc
    Free shipping in Canada. Conditions
    Additional information
    For more information about the XLogic VHD, please visit the website of Solid State Logic
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