The SSL XLogic VHD Pre is a high-quality microphone preamplifier from Solid State Logic, designed to deliver both clean and character-rich analog sound. It features SSL’s patented Variable Harmonic Drive (VHD) technology, allowing users to blend between subtle warmth and aggressive harmonic distortion by introducing 2nd or 3rd order harmonics. Ideal for both transparent recordings and creative coloration, the VHD Pre is a versatile tool for engineers seeking classic SSL clarity or bold analog character.