Front panel of a H2 AUDIO HELIOS 0011 stereo audio device with multiple knobs and switches for audio control.

H2 AUDIO 0011 Stereo — Microphone

$5,665.00
$5,665.00
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Front panel of a H2 AUDIO HELIOS 0011 stereo audio device with multiple knobs and switches for audio control.
  • Front panel of a H2 AUDIO HELIOS 0011 stereo audio device with multiple knobs and switches for audio control.
  • H2 AUDIO 0011 Stereo — Microphone, studio recording microphone body
  • Front panel of a H2 AUDIO HELIOS 0011 stereo audio device with multiple knobs and switches for audio control.
  • H2 AUDIO 0011 Stereo — Microphone, studio recording microphone body
H2 AUDIO 0011 Stereo — Microphone

H2 AUDIO 0011 Stereo — Microphone

H2 Audio 0011/Stereo is a dual-channel, 2U 19-inch rackmount microphone preamp/EQ based on the Helios 2128 preamp circuit. H2 Audio describes its products as hand-assembled in Detroit with custom transformers and a 100% analog signal path.

$5,665.00
$5,665.00
Condition Brand New
Specs Verified model facts
Checked against 1 listing
Verified
Use Studios that want a stereo Helios 2128-style preamp/EQ for tracking, stereo microphones, drum overheads, room mics, guitars or line-level shaping through transformer and inductor circuits.
Requires appropriate audio and data cables, compatible monitoring, mounting, or power setup
In stock Ask a question

Specifications

Inductor-based LF/MF EQ with selectable LF and MF plus fixed 10 kHz HF controls · EQ bypass · +48 V phantom power

Format

Channels Dual-channel / stereo
Rack format 2U 19-inch rackmount
Topology Solid-state, 100% analog Helios 2128-style preamp/EQ circuit
Finish Vintage Green finish shown on reviewed retailer page

Preamp

Preamp circuit Two channels replicating Helios 2128 microphone preamp circuits
Gain range 25 to 75 dB in 5 dB increments
Input transformers Lustraphone input transformers provide 20 dB gain before the preamps
Pad -20 dB pads
Phantom power +48 V phantom power
Polarity Phase switches

EQ and Filtering

Eq type Inductor-based LF/MF EQ with selectable LF and MF plus fixed 10 kHz HF controls
Low band Bass boosts at 60, 100, 200 or 300 Hz; 50 Hz filter cuts selectable at 3, 6, 9, 12 or 15 dB
Mid band 0.7, 1, 1.4, 2, 2.8, 3.5, 4.5 or 6 kHz boost/cut; PK/TR switch for peaks or troughs
High band 10 kHz bell-shaped boosts/cuts at -10 to +10 dB in 2 dB steps
High pass filter Selectable 40 Hz and 80 Hz high-pass filters, plus bypass/off
Eq bypass EQ bypass

Connectivity and Output

Line inputs Electronically balanced line inputs
Output stage Transformer-balanced line output amplifiers with custom output transformers
Load drive Can drive a 600 ohm load up to 25 dB before clipping
Connectors Analog XLR inputs and outputs

Fit and constraints

Studios that want a stereo Helios 2128-style pr… · +48 V phantom power

Intended use

Use Studios that want a stereo Helios 2128-style preamp/EQ for tracking, stereo microphones, drum overheads, room mics, guitars or line-level shaping through transformer and inductor circuits.
Not for Users needing very clean transparent gain, built-in converters, digital control, full parametric EQ, or compact single-rack-space preamps.

Constraints

Power+48 V phantom power
BypassEQ bypass
ControlsMFR# 0011/Stereo is verified by Vintage King; reviewed pages did not expose GTIN, exact...

To use it

Required appropriate audio and data cables, compatible monitoring, mounting, or power setup

Questions

3 to ask before buying

Which connections, drivers, operating systems, and sample rates are supported by this exact revision?

Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.

What cables, mounts, power supplies, or licenses are included?

Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.

Is the current retailer listing new stock, demo stock, open box, or special order?

Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.

Description

Product details

H2 Audio 0011/Stereo is a dual-channel, 2U 19-inch rackmount microphone preamp/EQ based on the Helios 2128 preamp circuit. H2 Audio describes its products as hand-assembled in Detroit with custom transformers and a 100% analog signal path. Retailer documentation for the 0011/Stereo lists 25-75 dB gain in 5 dB increments, Lustraphone input transformers providing 20 dB gain before the preamps, -20 dB pads, +48 V phantom power, phase switches, EQ cut switches, electronically balanced line inputs and transformer-balanced line output amplifiers able to drive a 600 ohm load up to 25 dB before clipping. The inductor-based EQ provides selectable LF and MF controls, a fixed 10 kHz high band, EQ bypass and selectable 40/80 Hz high-pass filters. Vintage King lists the product as MFR# 0011/Stereo in Vintage Green; no GTIN, exact weight or rack depth was exposed in reviewed sources.

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