H2 Audio Helios 2128 500 Series Microphone Preamp

The H2 Audio 2128 brings the legendary Helios 0011 preamp circuit into the compact and versatile 500 series format. Faithfully recreating the sonic essence of the “Type 69” channel module from the iconic Helios consoles of the late 1960s, the 2128 offers vintage warmth and clarity with modern convenience. This single-channel preamp delivers 70 dB of gain, a 20 dB pad, phase control, 48V phantom power, and a selectable high-pass filter, making it an ideal choice for professional engineers and recording artists.

The 2128 features a Cinemag input transformer, output amp section with transformer-based output, and an integrated output fader for precise level control. With its authentic design and meticulous craftsmanship, the 2128 captures the unmistakable sound that defined a generation of music.

Key Features

• Authentic Helios Design: Based on the iconic 0011 “Type 69” channel module.
• 70 dB of Gain: Smooth, detailed preamplification with vintage tonal characteristics.
• Cinemag Input Transformer: Delivers the signature warmth and clarity of Helios preamps.
• Advanced Controls: Includes 20 dB pad, phase control, and 48V phantom power.
• Selectable High-Pass Filter: Cleans up low-frequency rumble with precision.
• Output Amp with Transformer: Drives balanced outputs with rich harmonic detail.
• Integrated Output Fader: Provides precise control over output levels.
• 500 Series Format: Compact design fits any 500 series rack for modular integration.

Specifications

• Type: Microphone Preamp (500 Series)
• Channels: Single-channel
• Gain: Up to 70 dB
• Pad: 20 dB
• Phantom Power: 48V
• High-Pass Filter: Selectable
• Input Transformer: Cinemag
• Output: Amplifier with transformer and fader
• Chassis: 500 series module, 1-slot

Applications

• Studio recording of vocals and instruments
• Preamp for dynamic, condenser, and ribbon microphones
• Modular integration into 500 series racks
• Adding vintage warmth and clarity to modern productions