H2 Audio Helios 0011 Microphone Preamp/EQ

The H2 Audio Helios 0011 revives the iconic sound of the legendary Helios consoles that shaped the music of Jimi Hendrix, The Rolling Stones, and The Who. Painstakingly recreated by H2 Audio’s Al Sutton and Tim Mead, this single-channel module faithfully captures the original design by Dick Swettenham, ensuring an authentic sonic experience.

The Helios 0011 features the classic 2128 preamp circuit with 70 dB of gain, a Lustraphone input transformer, and inductor-based 3-band EQ for precise tone shaping. Added enhancements include a high-pass filter, phase control, and an output amplifier with an output transformer, allowing it to drive a 600-ohm load up to 25 dB before clipping. This module is a modern masterpiece for engineers seeking vintage warmth and unmatched clarity in their recordings.

Key Features

• Authentic Helios Design: Faithfully recreates the 1960s Helios console channel module.
• Original 2128 Preamp Circuit: Delivers up to 70 dB of gain in 5 dB increments.
• Lustraphone Input Transformer: Key to the signature Helios sound.
• Inductor-Based EQ: 3-band EQ with selectable LF and MF, and fixed 10 kHz HF controls.
• Enhanced Features: Includes phase control, EQ bypass, and 40 Hz/80 Hz high-pass filter.
• Output Amplifier: Drives a 600-ohm load with up to 25 dB of clean output before clipping.
• Proven Craftsmanship: Built with meticulous attention to detail to match the original Helios sound.

Specifications

• Type: Microphone Preamp and 3-Band EQ
• Gain: Up to 70 dB in 5 dB increments
• Input Transformer: Lustraphone replica
• High-Pass Filter: Selectable 40 Hz and 80 Hz
• EQ: Inductor-based LF and MF controls, fixed 10 kHz HF control
• Output: Amplifier and transformer drive 600-ohm loads up to 25 dB before clipping
• Channels: Single-channel
• Chassis: 1-slot module for Helios-style racks
• Format: Solid-state

Applications

• Studio vocals and instruments
• Tone shaping with vintage EQ
• Dynamic and ribbon microphone preamplification
• Tracking and mixing for classic analog warmth