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Alesis HD24XR 24-Track Hard Disk Recorder

This 96kHz, 24-track hard disk recorder is designed to fit into any ADAT environment and is built exclusively for recording music instead of data, resulting in remarkable stability and performance.

It enables engineers to record up to 24 tracks of 24-bit, high-resolution recording at 44.1, 48 kHz, and 12 tracks at 88.2, and 96 kHz sample rates. Two hot-swappable media bays provide convenient access to recording drives and allow data backup in minutes. Tracks may be edited internally or easily transferred to computer over an Ethernet connection.

HD24XR features ADAT Optical and ADAT Sync, enabling it to work efficiently with existing systems, and is controlled by an exceptionally user-friendly interface.

Product Weight:  20 lbs
Dimensions:  5.09"H x 19"W x 17"D, 3RU

Technical Tools

Manufacturer Specs

   Caddy 1: 40GB HD
   Caddy 2: empty
   Caddies can be fitted with IDE/EIDE/ATA drive at 5400 / 7200 / 10,000 RPM up to 2TB

Track Count
   24 tracks at 24-bit, 44.1 or 48 kHz
   12 tracks at 24-bit, 88.2 or 96 kHz

   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.
      MIDI in/out
      Alesis Sync in/out (DB-9)
      Word Clock input (BNC, 75)
      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: 90-230V AC, 60W