Solid State Logic has announced the release of the VHD Pre Module for the 500 format modular rack platform, making the VHD-based preamp technology from the large-format Duality console more widely available for studios of all sizes.
VHD Pre is a versatile recording and processing device that delivers SSL SuperAnalogue-grade recordings, and it also offers a switchable VHD mode.
SSL’s patented Variable Harmonic Drive (VHD) system uses a 100 percent analog signal path to generate rich harmonic distortion. As VHD input gain is increased, the Variable Harmonic Drive process introduces either 2nd or 3rd harmonic distortion or a blend of the two to the 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 a more fierce “transistor-esque” grunge.
The VHD section of the module has three rotary controls: a Drive control selects 2nd harmonic or 3rd harmonic distortion or a continuously variable blend of the two. A +20/+75 dB gain control sets input level. A -20/+20 dB trim control adjusts the output level from the circuit to enable level matching with other devices, because by its nature the VHD circuit can significantly increase signal levels.
The VHD Pre also has a selection of other preamp features: a signal present LED, a switchable 15 Hz to 500 Hz LF filter section, Hi-Z impedance switch for mic impedance matching, +48-volt phantom power, PAD to enable the VHD system to be used as a line level processing device, and a phase invert switch.
VHD technology is available in these SSL products: Duality, XL-Desk, X-Rack VHD Input Module and the (1U rack) VHD Pre.
New VHD Pre Modules will be available from SSL resellers worldwide from March 2015. Module Prices: £399, $649, 503.37€ + VAT or sales tax.
