Solid State Logic 729731X2 VHD+ Pre 500 Series Microphone Preamplifier

Versatile SSL Microphone Preamp with Variable Harmonic Drive
The Solid State Logic VHD+ Mic Pre Mk2 brings the legendary SSL Variable Harmonic Drive (VHD) circuitry to the 500 Series format, offering engineers and producers a flexible preamp solution for capturing everything from pristine clean recordings to harmonically rich saturation. Featuring a premium SuperAnalogue-grade gain stage and customizable harmonic distortion, this preamp adapts to any recording scenario, from transparent vocal takes to aggressive, character-driven instrument tracks.

High-Gain SSL Preamp for Exceptional Clarity
Equipped with up to +75 dB of gain, the VHD+ Mic Pre Mk2 is designed to handle a wide range of microphones, from sensitive condensers to low-output ribbon and dynamic mics. The additional ±20 dB trim control ensures precise level adjustments, making it easy to dial in the perfect gain structure. Whether recording delicate acoustic performances or high-energy drums, this preamp delivers the detail, depth, and dynamic range expected from SSL hardware.

Variable Harmonic Drive for Customizable Saturation
The VHD+ Mic Pre Mk2 features SSL’s patented Variable Harmonic Drive system, allowing users to introduce 2nd or 3rd order harmonic distortion—or a blend of both—for rich, musical coloration. At lower settings, it adds subtle warmth reminiscent of vintage tube preamps, while increasing the drive produces aggressive transistor-style saturation. When pushed to its limits, the VHD+ Mic Pre delivers raw, gritty distortion, perfect for bold sonic experimentation.

Switchable High-Pass Filter for Precise Tone Shaping
A continuously variable high-pass filter (15 Hz to 500 Hz) helps control unwanted low-end frequencies, making it easy to clean up recordings and maintain clarity in the mix. With an 18 dB/octave slope, this filter is ideal for tightening up vocals, reducing rumble in acoustic instruments, or shaping bass-heavy sources without affecting overall tone.

Flexible Input Options for Microphones, Line Signals, and Instruments
Designed for maximum versatility, the VHD+ Mic Pre Mk2 supports mic, line, and instrument inputs, with a front-panel 1/4" TRS jack for direct Hi-Z instrument connection. A Hi-Z switch adjusts impedance settings, ensuring optimal performance for different sources, including passive pickups and synths. This makes the preamp an excellent choice for DI bass, electric guitar, and external line-level gear.

Essential Studio Features for Professional Workflows
The VHD+ Mic Pre Mk2 includes all the essential functions needed for professional recording sessions. Switchable +48V phantom power ensures compatibility with condenser microphones, while the polarity invert switch allows for quick phase correction when multi-miking instruments or drums. A -20 dB pad accommodates high-output sources, preventing distortion and allowing the preamp to handle even the hottest signals with ease.

Compact 500 Series Format for Modular Integration
Housed in the API 500 Series format, the VHD+ Mic Pre Mk2 integrates seamlessly into modular studio setups, offering SSL’s renowned preamp performance in a flexible and space-saving design. Whether used alongside other SSL 500 Series modules or within a custom rack, this preamp provides the sonic quality and reliability professionals expect from SSL hardware.