Ld Systems LDDIO44 Audio Amplifier

LD Systems DIO 44: Professional 4-Channel DI Box, Splitter & Headphone Amplifier

Elevate your audio signal management with the LD Systems DIO 44, the ultimate multi-function tool designed for pristine sound in the studio, on stage, and in any professional installation. This versatile 1U 19-inch rack unit is engineered to solve the most common and complex audio routing challenges, combining the functionality of four high-quality DI boxes, a signal splitter, and a dedicated headphone amplifier into one robust and reliable device. Whether you´re a live sound engineer, a studio producer, or a musician, the DIO 44 provides the flexibility and performance you need to ensure your audio is clean, clear, and perfectly routed.

The primary benefit of the DIO 44 is its ability to deliver superior audio integrity. It expertly converts unbalanced, high-impedance signals from instruments like keyboards, acoustic guitars, and bass guitars into balanced, low-impedance signals. This conversion is critical for running long cable lengths to a mixing console without introducing unwanted noise, hum, or signal degradation, ensuring your sound arrives at its destination with studio-grade clarity.

Key Benefits:

* Unmatched Versatility: Functions as a 4-channel active DI box, a 1-in-4 signal splitter, and a convenient headphone monitoring station, saving valuable space and cost.
* Pristine Audio Quality: Delivers a clean, transparent audio signal with an exceptionally low distortion rate and a wide frequency response, preserving the natural tone of your instruments.
* Eliminate Noise and Hum: Each channel features a switchable ground lift to effectively combat ground loop issues, providing a hum-free signal path in any environment.
* Total Signal Control: A switchable -10 / -20 dB pad on each input accommodates a wide range of signal levels, from sensitive line-level sources to high-output instruments, preventing clipping and distortion.
* Built for the Road: Housed in a rugged, all-steel 19" rack chassis, the DIO 44 is designed to withstand the rigors of touring and frequent use while maintaining flawless performance.

Main Features:

* Four independent channels, each configurable as a DI box or signal splitter.
* Balanced XLR outputs for professional connection to mixing consoles and interfaces.
* Unbalanced 6.35 mm jack inputs for instrument and line-level sources.
* Link outputs for each channel allow for parallel connection to stage amplifiers.
* Integrated headphone amplifier with a dedicated volume control for direct signal monitoring.
* Front-panel power switch with a clear LED status indicator.
* Internal, high-quality power supply for stable and reliable operation.

The DIO 44 excels in any professional audio scenario. Use it as four separate DI boxes for a full band, or switch to splitter mode to send a single input signal to four different outputs simultaneously—perfect for driving multiple amplifiers, recording feeds, and monitoring systems. For personal monitoring or quick signal checks, simply plug your headphones into the front-panel Jack 3.5 mm output and adjust the level to your preference. This feature is invaluable for technicians and musicians needing to troubleshoot or verify a signal on the spot.

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Technical Specifications:

* Product Type: DI Box, Splitter, Headphone Amplifier
* Channels: 4
* Inputs: 4x6.35 mm Jack (unbalanced)
* Input Impedance: 1 M Ohm(s)
* Max. Input Level: +18 dBu
* Outputs: 4 x XLR (balanced), 4x6.35 mm Jack
* Headphone Output: 1x3.5 mm Stereo Jack
* Output Impedance (XLR): < 50 Ohm(s)
* Frequency Response: 10 Hz - 40.000 Hz
* Signal-to-Noise Ratio: > 96 dB
* Total Harmonic Distortion (THD): < 0.004 % @ 1 kHz
* Controls: Ground Lift (x4), Pad -10/-20 dB (x4), Headphone Level, Power Switch
* Power Supply: Integrated (IEC Connector), 230 V AC
* Cabinet Material: Steel
* Dimensions (W x H x D): 483x44.5x150 mm
* Weight: 2.54 kg