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Art Pro Audio Pro Channel II 1-Channel Class A Tube Microphone Preamplifier, Optical Compressor, Parametric Equalizer

SKU: APAPCHII MFR: PRO CHANNEL II
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Key Features

  • Enhance vocals with the Class A tube microphone preamplifier for warm, rich sound.
  • Achieve optimal sound shaping using the Pro Channel II's versatile parametric equalizer.
  • Dial in the perfect dynamics with the integrated optical compressor for polished tracks.
  • Enjoy ultra-low noise performance, ensuring clean recordings with EIN down to -128 dBu.
  • Shape your tone with variable input impedance, from 150 to 3.4k Ohm on the microphone input.
  • Use as a front end for your DAW, adding analog warmth with a wide 70dB gain range.
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Special Order?Estimated to Ship: 08/14/2025
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Art Pro Audio Pro Channel II Specifications

  • Number of Channels

    Single

  • Inputs

    1 x 1/4" TS phone Instrument (front panel)
    1 x XLR Microphone 1 x 1/4" TS phone Comp In (return)
    1 x 1/4" TS phone EQ In (return)

  • Outputs

    1 x XLR
    1 x 1/4" TRS phone

  • Frequency Response

    12 Hz to 100 kHz, +0,-1.0 dB

  • THD

    1 kHz: < .015% typical
    20 Hz to 20 kHz: < .033% typical

  • Noise

    EIN
    Mic/Line: -128 dBu, input shorted, maximum gain, A-weighted
    Instrument: -109 dBu, input shorted, maximum gain, A-weighted

  • Gain Range

    Microphone: 70 dB (XLR to balanced output)
    Instrument: 64 dB (1/4" to balanced output)

  • Input Impedance

    Microphone: 150 to 3.4k Ohm, variable
    Instrument: 2.5M Ohm
    Preamp Insert: 7. 5k Ohm

  • Maximum Input

    Microphone: +18 dBu balanced
    Instrument: +15 dBu

  • Output Impedance

    Balanced Output: 600 Ohm balanced
    Unbalanced Output: 300 Ohm
    Insert Outputs: 300 Ohm

  • Maximum Output

    Balanced: +24 dBu
    Unbalanced: +20 dBu
    Output Level @ Meter 0 VU:+4 dBu/-10 dBV

  • Phantom Power

    +48 V

  • Threshold Range

    -20 dB to +20 dB

  • Ratio

    2:1 to 30:1

  • Attack Time

    250 micros to 100 ms

  • Release Time

    100 ms to 3 s

  • Sidechain

    No

  • Frequency Bands

    Low: 40/120 Hz, selectable
    Low-Mid: 20 Hz to 2 kHz, continuously variable
    High-Mid: 200 Hz to 20 kHz, continuously variable
    High: 6 kHz/18 kHz, selectable

  • Bandwidth

    Low- and High-Mid can be switched to Wide or Narrow

  • Range (Boost/Cut)

    +/-12 dB on each band

  • Power Requirements

    105-125 VAC, 60 Hz

  • Specialties

    Low-Cut Filter: 10 Hz to 250 Hz, 1-pole, 6 dB/octave

  • Dimensions (W x D x H)

    19 x 9.2 x 3.5" (483 x 234 x 89mm)

  • Weight

    11 lbs (5kg)

  • UPC Code

    840402019312

About Art Pro Audio Pro Channel II

After meticulous design and engineering, the ART Pro Channel II emerges as a superior 1-Channel Class A Tube Microphone Preamplifier, boasting a second-generation discrete Class-A microphone preamp that ensures pristine, quiet gain while preserving the utmost transparency of your audio signal. This high-quality preamplifier is the ideal choice for professionals seeking the warm, rich sound that only a tube preamp can provide, setting it apart from solid-state alternatives.

The Pro Channel II is not just a preamplifier; it's a comprehensive audio processing unit. It features a robust optical compressor that masterfully controls transients and noise from the most challenging sources, ensuring that your recordings maintain professional-grade dynamics. The subtlety of the compressor allows for the enhancement of audio without compromising the integrity of the original sound.

Further refining its versatility, the Pro Channel II is equipped with a semi-parametric EQ that offers expansive tune-ability. This parametric equalizer allows for meticulous sound shaping, enabling users to tailor the audio to their precise requirements, whether for studio recordings or live performances. The flexibility of the EQ is heightened by its ability to be patched either before or after the dynamics processor, providing users with the option to customize their signal flow as needed.

To integrate additional equipment with ease, separate rear-mounted insert points are thoughtfully provided. These allow for the seamless patching of external signal processing gear immediately after the microphone preamp and before the EQ and dynamics processor, expanding the unit's functionality and adaptability in a professional audio setup.

The Pro Channel II also comes with both analog and LED meters, offering a detailed and accurate indication of audio levels. This dual metering system ensures that users can monitor their signal with precision, making adjustments in real-time to achieve the desired audio output.

Durable, reliable, and built to meet the demands of discerning audio professionals, the ART Pro Channel II stands as a testament to superior audio processing equipment. Its combination of a tube preamplifier, optical compressor, and parametric equalizer makes it an indispensable tool for achieving the highest quality sound in recording and live sound environments.

Art Pro Audio Pro Channel II Features

  • Fully Featured discrete class "A" Tube Microphone Preamplifier
  • Selectable plate Voltage
  • Separate Attack and Release controls
  • Parametric EQ
  • Multi section clip monitor LED
  • Two insert loops
  • Toroidal power transformer for low noise
  • 1/4" High Z input on the front panel
  • Smooth musical sounding Optical Compressor
  • Auto/Manual Attack/Release switch
  • Large VU and LED meters
  • Selectable Source switches for VU signal monitoring of any section of the unit
  • +4/-10 dB switch for optimal signal output levels

Warranty Information

This product has a limited warranty of 36 months.

Product Documents

User Manual

Key Features

  • Enhance vocals with the Class A tube microphone preamplifier for warm, rich sound.
  • Achieve optimal sound shaping using the Pro Channel II's versatile parametric equalizer.
  • Dial in the perfect dynamics with the integrated optical compressor for polished tracks.
  • Enjoy ultra-low noise performance, ensuring clean recordings with EIN down to -128 dBu.
  • Shape your tone with variable input impedance, from 150 to 3.4k Ohm on the microphone input.
  • Use as a front end for your DAW, adding analog warmth with a wide 70dB gain range.

What's in the box:

  • Class A Tube Microphone Preamplifier
  • AC Power Cable
  • Art Pro Audio 3 Year Limited Warranty