Introducing the world’s first 24-track, 24-bit/96kHz hard disk recorder designed to fit comfortably into any standard ADAT environment — and match ADAT’s legendary performance and affordability.

With its patent-pending method of writing to the hard drive, the HD24XR is the first hard disk recorder built from the ground up exclusively for the purpose of recording music instead of data — resulting in remarkable stability and performance. And yet, thanks to its use of standard, low-cost IDE computer drives, the recording media costs no more than traditional ADAT tape on a per track basis.

Two hot-swappable media bays provide convenient access to the recording drives, and allow the user to backup data in just minutes. You can edit tracks internally or easily transfer to computer via built-in Ethernet. It's the only HD recorder on the market with standard ADAT Optical and ADAT Sync, enabling the HD24XR to work efficiently with existing systems. And it offers the same exceptional user-friendly interface ADAT users have come to expect.

Alesis reinvents digital recording. Again.

• Media
  • Any internal IDE hard drive
• Track Count
  • 24 tracks at 24-bit/48kHz
  • 12 tracks at 24-bit/96kHz
• Sample Rates
  • Digital: 44.1-96kHz
  • Analog: 44.1-48kHz
  • Upgrade HD24 to 96kHz with the EC-2
• Connections
  • Analog: 24 24-bit inputs, 24 24-bit outputs (1/4" TRS, +4dBu)
  • Digital: 24-channel I/O via 3 ADAT Optical inputs and 3 ADAT Optical outputs
  • Other:
    • MIDI in/out
    • Alesis Sync in/out (DB-9)
    • Word Clock input (BNC, 75½)
    • Footswitch jack for punch in/out (1/4")
    • LRC input for traditional wired remote (1/4")
    • 10 Base-T Ethernet (RJ-45)
• Audio Specs
  • Frequency response:
    • 20Hz-20kHz +0/-1dB
  • Dynamic range:
    • 103dB A/D, >103dB D/A (A-weighted)
  • Distortion:
    • <0.003% THD+N
  • Input levels:
    • Nominal +4dBu
    • Maximum +19dBu
  • Pitch control:
    • +100 cents/-200 cents, min-max 30-50kHz (30-100kHz with version 2.0)
• Power & Dimensions
  • Power:
    • 90-230V AC, 60W
  • Dimensions (H x W x D):
    • 5.09" x 19" x 17"
    • (127mm x 483mm x 432mm)
    • 3U rackmount
• Weight: 20lbs (9.07kg)