Front panel of a black stereo audio processor with gain and equalizer controls and power button.

H2 AUDIO 0011 Stereo Black — Microphone

$5,665.00
$5,665.00
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Front panel of a black stereo audio processor with gain and equalizer controls and power button.
  • Front panel of a black stereo audio processor with gain and equalizer controls and power button.
  • H2 AUDIO 0011 Stereo Black — Microphone, studio recording microphone body
  • H2 AUDIO 0011 Stereo Black — Microphone, studio recording microphone body
  • Front panel of a black stereo audio processor with gain and equalizer controls and power button.
  • H2 AUDIO 0011 Stereo Black — Microphone, studio recording microphone body
  • H2 AUDIO 0011 Stereo Black — Microphone, studio recording microphone body
H2 AUDIO 0011 Stereo Black — Microphone

H2 AUDIO 0011 Stereo Black — Microphone

H2 Audio 0011/Stereo is a dual-channel 2U 19-inch rackmount solid-state microphone preamp/EQ based on the Helios 2128 microphone preamp circuit and assembled by H2 Audio in Detroit as part of its Helios-style analog product line.

$5,665.00
$5,665.00
Condition Brand New
Specs Verified model facts
Checked against 1 listing
Verified
Use Engineers wanting two channels of Helios 2128-style preamp and inductor EQ in a modern rack unit for stereo sources, drum overheads, guitars, vocals or line-level analog color.
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 Black finish variant in input catalog; finish-specific MPN not verified

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

Engineers wanting two channels of Helios 2128-s… · +48 V phantom power

Intended use

Use Engineers wanting two channels of Helios 2128-style preamp and inductor EQ in a modern rack unit for stereo sources, drum overheads, guitars, vocals or line-level analog color.
Not for Users needing transparent clean gain, digital I/O, recall/automation, parametric EQ, or more than two preamp channels in the same rack space.

Constraints

Power+48 V phantom power
BypassEQ bypass
ControlsBlack finish appears in the input catalog, but reviewed public pages verified the base ...

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 solid-state microphone preamp/EQ based on the Helios 2128 microphone preamp circuit and assembled by H2 Audio in Detroit as part of its Helios-style analog product line. Retailer documentation lists 25-75 dB gain in 5 dB steps, Lustraphone input transformers that provide 20 dB of 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 that can drive a 600 ohm load up to 25 dB before clipping. The EQ section uses inductor-based LF/MF circuits with selectable low and mid bands, fixed 10 kHz high-frequency controls, EQ bypass and selectable 40/80 Hz high-pass filters. Vintage King verifies MFR# 0011/Stereo; reviewed sources did not verify a separate black-finish part number or GTIN.

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