The Solid State Logic VHD Pre is an incredibly versatile 500 Series mic preamp that delivers ultra-clean SSL SuperAnalogue-grade sound – with a twist. It’s outfitted with SSL’s Variable Harmonic Drive (VHD) system. As you increase VHD input gain, the VHD process introduces 2nd or 3rd-order harmonic distortion (or a blend of the two). At lower gain settings it adds gentle valve-like warmth or a touch of edge. As you increase gain, the more extreme the distortion becomes, all the way to trashed-transistor grunge.
Solid State Logic VHD Pre Features:
- Uniquely versatile recording and processing
- Ultra clean SSL SuperAnalogue grade preamp
- VHD system adds controllable 2nd or 3rd harmonic distortion
- Switchable LF Filter (15Hz to 500Hz)
- Hi-Z switch for high impedance microphone use
- +48V Phantom Power with status LED
- Pad for use with line level source material
- Phase invert switch





