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DIGIDESIGN

Digidesigns MH068 888 I/O 24 Audio Interface

$29.98

The Digidesign MH068 888|24 I/O is a legacy professional audio interface, designed to work specifically with older Pro Tools TDM systems (like Pro Tools|24 or Pro Tools III) as part of a computer-based recording studio. It provides high-quality 24-bit audio conversion and extensive input/output options. The 888|24 I/O (Input/Output) unit is a 2U, rack-mountable device that was a cornerstone of professional digital audio production in the late 1990s and early 2000s. It connects to a host computer via a proprietary 50-pin interface cable to a dedicated Pro Tools PCI or NuBus card, not directly via modern connections like USB or Thunderbolt.

View Product Features

  • 8 Channels Analog I/O: Provides 8 balanced XLR inputs and outputs.
  • 24-bit A/D & D/A: Features 24-bit converters for superior sound quality.
  • Multiple Digital Connections: Includes AES/EBU and S/PDIF input/output ports.
  • Selectable Operating Levels: Switchable between +4 dBu and -10 dBV line levels.
  • External Sync Support: Offers BNC Super Clock (256x sample rate) for synchronization.
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About the Digidesigns MH068 888 I/O 24 Audio Interface

The Digidesigns MH068 888 I/O 24 is a high-channel-count professional audio interface designed as a core component for large-scale digital audio workstations and post-production facilities. This unit serves as a critical bridge between the analog and digital domains, providing 24 channels of pristine analog input and output conversion, all synchronized and routed through a proprietary digital interface. It was engineered to integrate seamlessly with professional mixing consoles and control surfaces, offering studio-grade microphone preamplifiers, high-headroom line inputs, and transparent analog output stages. Its robust, rack-mountable steel construction is built for the demands of a 24/7 broadcast, music recording, or film scoring environment, where signal integrity and reliability are non-negotiable.

Central to its operation is a high-resolution analog-to-digital and digital-to-analog conversion system, supporting various sample rates to ensure accurate capture and reproduction of audio with minimal coloration and low noise. The interface utilizes a dedicated digital interface cable to connect to a host computer or DSP farm, minimizing latency and ensuring stable data transfer for large track counts. Its rear panel is densely populated with balanced analog connectors—typically XLR and TRS—along with word clock I/O for synchronization with other digital studio equipment, making it a flexible hub for complex audio routing. The device is designed to be controlled and configured via software from the connected workstation, allowing for detailed setup of input gain, phantom power, and monitoring paths.

The MH068 888 I/O 24 stands as a testament to professional audio infrastructure, offering expansive I/O in a single rack unit for large tracking, mixing, and surround sound applications. Its design emphasizes sonic transparency and operational stability, providing the audio professional with a dependable and sonically accurate tool for critical listening and recording tasks. While it requires a compatible digital audio workstation environment to function fully, it delivers the extensive connectivity and high-fidelity conversion necessary for major recording studios, audio post-production houses, and broadcast facilities that require a large number of simultaneous analog channels interfaced with a digital system.

Key Features

  • 8 Channels Analog I/O: Provides 8 balanced XLR inputs and outputs.
  • 24-bit A/D & D/A: Features 24-bit converters for superior sound quality.
  • Multiple Digital Connections: Includes AES/EBU and S/PDIF input/output ports.
  • Selectable Operating Levels: Switchable between +4 dBu and -10 dBV line levels.
  • External Sync Support: Offers BNC Super Clock (256x sample rate) for synchronization.

Digidesigns MH068 888 I/O 24 Audio Interface Specs

Audio Input & Output
Analog Inputs
24 Channels
Analog Outputs
24 Channels
Connector Type
XLR & TRS Balanced
Mic Preamps
8 with Phantom Power
Digital & Conversion
Sample Rate Support
Up to 96 kHz
Bit Depth
24-bit
Digital I/O
Proprietary Interface
Word Clock I/O
BNC In/Out
Physical & Control
Form Factor
2U Rackmount
Chassis Material
Steel
Primary Control
Software Remote
Power Supply
Internal
Connectivity & Sync
Interface Cable
D-Sub Multi-pin
Sync Reference
Internal/Word Clock
LED Indicators
Status & Signal
Performance Specifications
Frequency Response
20Hz - 20kHz
Dynamic Range
>110 dB
THD+N
<0.002%
Power Requirements
100-240V AC

Key Features

  • 8 Channels Analog I/O: Provides 8 balanced XLR inputs and outputs.
  • 24-bit A/D & D/A: Features 24-bit converters for superior sound quality.
  • Multiple Digital Connections: Includes AES/EBU and S/PDIF input/output ports.
  • Selectable Operating Levels: Switchable between +4 dBu and -10 dBV line levels.
  • External Sync Support: Offers BNC Super Clock (256x sample rate) for synchronization.
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