Solid State Logic XLogic Alpha VHD Pre 4-Channel Mic Preamp

Solid State Logic XLogic Alpha VHD Pre – Professional 4-Channel Mic Preamplifier

The Solid State Logic XLogic Alpha VHD Pre is a professional 4-channel microphone preamplifier designed as a high-end front-end for recording studios and DAW-based systems. Built on SSL’s SuperAnalogue console technology, it combines ultra-clean amplification with the ability to add controlled analog character using the Variable Harmonic Drive (VHD) system.

Ultra-Clean SSL SuperAnalogue Preamplification

Each of the four channels provides high-quality SSL microphone preamplification with extremely low noise and wide dynamic range. The design delivers transparent, accurate signal capture suitable for vocals, acoustic instruments, drums, and critical studio recordings.

Variable Harmonic Drive (VHD) – SSL Analog Character Control

The defining feature of the Alpha VHD Pre is SSL’s Variable Harmonic Drive circuit. This allows engineers to introduce controllable harmonic distortion by adjusting input gain and VHD level. The system generates:

• 2nd-order harmonics for warm, tube-like coloration
• 3rd-order harmonics for tighter, more aggressive transistor-style edge

This gives a continuous range from pristine transparency to rich analog saturation, making it both a clean preamp and a creative tone-shaping tool.

Flexible Input Options per Channel

Each channel supports microphone, line, and instrument-level signals with Hi-Z inputs, 48V phantom power, and 20 dB pad switching. This flexibility makes it suitable for tracking vocals, DI instruments, synths, and line-level processing.

High-Gain, Low-Noise Performance

The Alpha VHD Pre provides up to approximately 75 dB of gain with excellent headroom. It is capable of amplifying low-output microphones cleanly while maintaining detail and clarity even at high gain levels.

Studio Integration and Workflow Use

This unit is designed as a professional front-end for DAW-based studios, offering four high-quality analog channels in a single rack unit. It is commonly used for multi-mic recording setups such as drum kits, ensembles, and live tracking sessions.

Key Features

• 4-channel SSL SuperAnalogue microphone preamp system
• Variable Harmonic Drive (VHD) for analog saturation control
• Selectable 2nd and 3rd harmonic distortion blend
• Up to ~75 dB clean gain with high headroom
• 48V phantom power and 20 dB pad per channel
• Hi-Z instrument inputs on each channel
• Designed for professional DAW recording systems
• Ideal for vocals, drums, instruments, and multi-mic sessions

Ideal for Professional Recording Studios

The SSL XLogic Alpha VHD Pre is designed for engineers who need both pristine recording quality and flexible analog coloration in a single unit. It is widely used in professional studios as a compact SSL front-end for high-quality tracking sessions.