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Description

Product information "H2 Audio Helios Channel"

Mic pre, 3-band EQ, and classic FET compression — the complete Helios signal path that defined ‘70s rock, now in a rugged 19” rackmount channel strip. The H2 Audio Helios Channel delivers the full sonic DNA of the legendary Helios consoles in one powerful rack unit. Combining the 0011 mic preamp, inductor-based 3-band EQ, and the classic Helios FET compressor/limiter, this channel strip recreates the punch, warmth, and musical shaping that defined the golden age of British rock.
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Manufacturer information

H2 Audio

H2 Audio

Support@h2audio.com

118 E 7th St, Suite B, Royal Oak MI 48067, United States

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Tech-Info

Preamp

  • Mic Gain: 25–75 dB in 5 dB steps (up to 85 dB with fader)
  • Pad: –20 dB
  • Input: Line/Mic via Lustraphone M10 transformer
  • DI: ¼” instrument input with Acme Audio Motown DI transformer
  • Output: Transformer-balanced XLR

EQ

  • LF Boost: 60, 100, 200, 300 Hz
  • LF Cut: 50 Hz (–3 to –15 dB)
  • MF: Selectable 0.7–6 kHz with peak/trough toggle
  • HF: Fixed 10 kHz shelf, ±10 dB
  • Filter: 0 / 40 / 80 Hz high-pass
  • EQ Bypass: Toggle switch

Compressor/Limiter

  • Ratios: 6 stepped settings with varying thresholds (2:1 up to 10:1)
  • Attack: 0.25 – 25 ms (6 steps)
  • Release: 0.025 – 3.2 sec + Auto dual release
  • Modes: Comp+Limit or Limit Only
  • Sidechain: Insert via rear panel TRS
  • Stereo Link: CV link toggle
  • Metering: Analog gain reduction (0–20 dB)

Build

  • Format: 19” rackmount, 2U
  • Construction: Heavy-duty steel
  • Switches: ELMA gold rotary, gold-plated toggles
  • Pots: Sealed conductive plastic
  • I/O: Neutrik gold-plated XLR, TRS for sidechain and CV link
  • Power: External PSU, 120V/230V selectable
  • Acme Audio Motown DI transformer for the DI input.