Henry Engineering Matchbox-HD 4-Channel Stereo RCA to XLR Audio Interface

SKU: HEMBHD MFR: MB
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Key Features

  • Convert consumer RCA audio to pro-level XLR with this 4-channel audio interface.
  • Achieve low latency and pristine audio quality for studio recording or broadcast use.
  • Enjoy stable driver performance and seamless software compatibility for worry-free use.
  • Optimize your signal flow with selectable gain, perfect for diverse audio sources.
  • Durable steel enclosure ensures lasting build quality for reliable audio conversion.
  • Easily integrates into any setup, desktop or rackmount, with flexible mounting options.
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Special Order?Estimated to Ship: 08/12/2025
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Henry Engineering Matchbox-HD Specifications

  • IHF Input/Output Levels

    -20 to 0 dBv

  • PRO Input/Output Levels

    0 to +8 dBm, +26 dB max

  • IHF Input Impedance

    10k ohms; HI GAIN 5k ohms

  • PRO Input Impedance

    20k ohms

  • IHF Output Load

    2k ohms or higher, unbalanced

  • PRO Output Load

    600 ohms or higher, balanced

  • IHF to PRO Gain

    +6to +20 dB; HI GAIN add 6 dB

  • PRO to IHF Gain

    -6 to infinity (off)

  • Number of Channels

    4: 2 IHF to PRO and 2 PRO to IHF

  • Frequency Response

    DC to 20kHz, +/-0.25 dB

  • Distortion

    < .01% IM/THD

  • Noise

    -100 dB ref. +4 dBu, bal.
    -95 dB ref. -10 dBv, unbal.

  • Power Requirements

    115/230VAC, 50/60Hz, 3 W

  • Mounting

    Table top, optional rack mount shelf, optional wall/cabinet mounting brackets

  • Headroom

    22 dB (bal.); 30 dB (unbal.)

  • Dynamic Range

    122 dB (bal.), 125 dB (unbal.)

  • Construction

    Steel enclosure

  • Dimensions (W x H x D)

    5.7 x 1.7 x 6.0" (14.48 x 4.3 x 15.24cm)

  • Weight

    3 lbs (1.36kg)

  • UPC Code

    837654309070

About Henry Engineering Matchbox-HD

Let the Matchbox-HD 4-Channel Stereo RCA to XLR Audio Interface revolutionize your audio experience. This innovative and reliable audio converter, designed by the reputable Henry Engineering, is the perfect solution for professional audio applications that require RCA to XLR signal conversion.

The Matchbox-HD is not just an audio interface; it's a high-quality, bi-directional stereo level and impedance interface that seamlessly bridges the gap between consumer gear and professional equipment. It's designed to eliminate common audio issues such as hum, buzz, and distortion caused by mismatched levels and impedances.

Ideal for devices that both play and record, like DAT recorders and computer sound cards, the Matchbox-HD stands out from other audio interfaces. It doesn't rely on inexpensive "wall-warts" for power but instead features an internal AC power supply, ensuring consistent, high-quality performance.

The Matchbox-HD is more than just a durable piece of equipment; it's a testament to superior audio performance. It boasts a true 100 dB S/N ratio, with 22 dB of headroom, providing an impressive 122 dB of dynamic range. This ensures that your audio is not just heard, but experienced in its fullest, richest form.

This user-friendly audio interface is a bi-directional unit, employing four independent amplifiers to convert stereo inputs and outputs from unbalanced -10 dBv levels to +4 dBm balanced 600 ohm lines. All four outputs can be adjusted to accommodate a wide range of operating levels, providing you with the flexibility you need for various audio applications.

The Matchbox-HD also features a special HI GAIN mode, specifically designed to match the low-level unbalanced outputs of computer sound cards. Its direct-coupled circuitry and exceptional dynamic range ensure absolute sonic transparency, making it an ideal choice for use with digital editors, DAT recorders, and other digital audio sources.

With its 1/3 rack width, the Matchbox-HD can be conveniently mounted using an optional rack shelf or wall-mounted with optional wall/cabinet mounting brackets. Experience the difference of high-quality, professional audio conversion with the Matchbox-HD 4-Channel Stereo RCA to XLR Audio Interface.

Henry Engineering Matchbox-HD Features

  • High-quality, bi-directional stereo level and impedance interface for professional audio applications
  • Eliminates common audio issues like hum, buzz, and distortion caused by mismatched levels and impedances
  • Features a true 100 dB S/N ratio with 22 dB of headroom, offering an impressive 122 dB of dynamic range
  • Equipped with four independent amplifiers for converting stereo inputs and outputs from unbalanced -10 dBv levels to +4 dBm balanced 600 ohm lines
  • Special HI GAIN mode designed to match the low-level unbalanced outputs of computer sound cards
  • Convenient 1/3 rack width design, can be rack or wall-mounted with optional brackets

Product Documents

User Manual

Key Features

  • Convert consumer RCA audio to pro-level XLR with this 4-channel audio interface.
  • Achieve low latency and pristine audio quality for studio recording or broadcast use.
  • Enjoy stable driver performance and seamless software compatibility for worry-free use.
  • Optimize your signal flow with selectable gain, perfect for diverse audio sources.
  • Durable steel enclosure ensures lasting build quality for reliable audio conversion.
  • Easily integrates into any setup, desktop or rackmount, with flexible mounting options.

What's in the box:

  • Matchbox-HD 4-Channel Stereo RCA to XLR Audio Interface
  • Henry Engineering 1 Year Limited Warranty