Black Lion Audio B173 Quad 4-Channel Preamp with Mic and DI Inputs, 2 RU

SKU: BLB173QUAD MFR: B173QUAD
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Key Features

  • Capture pristine audio with this 4-channel preamp, perfect for studio recording.
  • Achieve a wide gain range (up to 70dB) on your microphones for versatile recording.
  • Enjoy ultra-low noise performance, ensuring clean and professional sound quality.
  • Shape your sound with selectable Hi-Z inputs, ideal for guitars and bass DI recording.
  • Experience superior build quality in a robust 2RU rackmount preamp for lasting use.
  • Easily connect mics & instruments with XLR & 1/4" inputs on this versatile preamp.
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Special Order?Estimated to Ship: 08/23/2025
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Black Lion Audio B173 Quad Specifications

Inputs
  • Input Level

    Microphone: +1 dBu maximum
    DI: +18 dBu maximum

  • Gain

    Microphone: +12 to +70 dB
    DI: Up to +25 dB

  • Impedance

    Microphone: 200Ohms
    DI: 1.1M Ohms

  • Phantom Power

    48V, selectable

  • Polarity Reverse

    180deg., selectable

  • Hi-Z

    Switchable on 2 channels

  • Controls

    4x gain knobs
    4x output knobs
    2x Hi-Z selectors
    4x phantom power selectors
    4x polarity-reverse selectors

  • Connections

    Microphone: 4x XLR
    DI: 2x 1/4", phone type

  • Equivalent Input Noise

    Microphone: -105 dBu
    DI: -100 dBu

  • THD+N

    Microphone at +4 dBu Output:

    0.04% at +8 dBu
    0.05% at +25 dBu
    0.06% at +40 dBu
    0.08% at +55 dBu
    0.21% at +66 dBu

    DI at +4 dBu Output:

    0.021% at +10 dBu
    0.016% at +20 dBu

  • Bandwidth

    Microphone: 10 Hz to 30 kHz (1 kHz, 150Ohms source, unweighted)
    DI: 10 Hz to 30 kHz (1 kHz, 600Ohms source, unweighted)

Outputs

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  • Output Level

    +28 dBu maximum

  • Output Impedance

    600Ohms

  • Connections

    4x XLR
    4x 1/4"

  • Rack Space

    2 RU

  • UPC Code

    713541493490

About Black Lion Audio B173 Quad

You'll discover unparalleled audio fidelity with the B173 Quad 4-Channel Preamp, a state-of-the-art addition to Black Lion Audio's acclaimed lineup. This preamp isn't merely a replication; it's a reimagining of the iconic 1073-style gain, tailored for the contemporary audio professional. Encased in a sleek 2 RU chassis, the B173 Quad is the epitome of high-quality, professional, durable, versatile, and reliable studio equipment.

Experience the fusion of vintage allure and modern engineering as the B173 Quad's enhanced gain stage delivers a substantial 70dB of clean gain, reducing noise and distortion for pristine sound quality. The integration of premium Cinemag input and output transformers ensures your audio remains smooth and warm, preserving the soul of your music.

The B173 Quad's versatility shines with dual front panel DI inputs, offering a harmonically rich tone that will breathe life into guitars, keyboards, and synthesizers. With stepped input gain and variable output attenuation, you gain precise control over transformer saturation, allowing you to sculpt your sound with finesse.

Monitoring your levels is effortless, thanks to the detailed metering on all four channels, ensuring your output signal is optimally hitting the parallel TRS/XLR outputs. An external power supply is thoughtfully included to minimize noise interference, ensuring that your tracks remain impeccably clear.

Whether you're recording multiple instruments in a studio session or managing live sound, the B173 Quad's array of XLR and 1/4" inputs, coupled with switchable phantom power, provides the flexibility and reliability needed to capture high-fidelity audio across a diverse range of sources.

Choose the B173 Quad 4-Channel Preamp for its exceptional channel capacity and input versatility, and elevate your audio production to professional heights with this robust and refined piece of equipment.

Black Lion Audio B173 Quad Features

  • 70dB of pristine 1073-style gain in a modern 2 RU chassis
  • Enhanced gain stage with lower noise floor for cleaner sound
  • Cinemag transformers for smooth, warm audio output
  • Dual front panel DI inputs to enrich guitars and synthesizers
  • Stepped input gain and variable output attenuation for precise sound control
  • Integrated metering on all channels with parallel TRS/XLR outputs

Warranty Information

This product has a limited warranty of 36 months.

Product Documents

User Manual

Key Features

  • Capture pristine audio with this 4-channel preamp, perfect for studio recording.
  • Achieve a wide gain range (up to 70dB) on your microphones for versatile recording.
  • Enjoy ultra-low noise performance, ensuring clean and professional sound quality.
  • Shape your sound with selectable Hi-Z inputs, ideal for guitars and bass DI recording.
  • Experience superior build quality in a robust 2RU rackmount preamp for lasting use.
  • Easily connect mics & instruments with XLR & 1/4" inputs on this versatile preamp.

What's in the box:

  • Black Lion Audio B173 Quad 4-Channel Preamp with Mic and DI Inputs
  • Power Supply
  • Black Lion Audio 3 Year Limited Warranty