Expand your DAW's power with the reliability versatility, and convenience of a standalone hard disk recorder.

In the studio or on the road, the Alesis ADAT-HD24 Digital Recorder gets the job done. This 24-track, 24-bit/96kHz hard disk recorder was originally designed to fit comfortably into any standard ADAT environment and match ADAT's legendary performance and affordability. Today, more an more pros are using the HD24 for high-quality audio capture, while freeing up computer resources for more processor-intensive plug-ins, virtual instruments, and mixing.

The onboard 40GB hard drive can be easily extended with low-cost IDE computer drives that are as affordable as traditional ADAT tape on a per-track basis. 2 hot-swappable media bays provide convenient access to the recording drives and allow quick backup from one hard drive to another. The only HD recorder that includes ADAT optical format and ADAT Sync to work efficiently with existing ADAT systems. 44.1kHz and 48kHz internal sample rates, slaved to external word clock, with 96kHz and 88.2kHz option. 12 tracks at 88.2 or 96kHz through the digital ins. 24 tracks at 44.1 or 48kHz through the digital or analog ins. 103dB A/D/A converters. Internal editing including cut, copy, paste, and track-move with undo. Multiple units can be synchronized to create a larger system. 24 analog ins and outs, ADAT Optical in/out, word clock in. All necessary hardware and connectors included.

Alesis ADAT-HD24 Digital Recorder Features:

• 24-track, 24-bit digital audio recording
• 44.1kHz internal sample rates
• 12 tracks at 88.2 or 96kHz through the digital ins
• 24 tracks at 44.1 or 48kHz through the digital or analog ins
• 103dB A/D/A converters
• Slaves to external word clock
• 40GB built-in HD
• Dual recording bays accept standard IDE drives
• Internal editing capabilities
• Can run with multiple units
• 24 analog ins and outs
• All necessary hardware included

Expand the capabilities of your system with high-quality audio capture, or simply enjoy the reliability of standalone hard disk recording.

Alesis ADAT-HD24 Digital Recorder Specifications:

• 2 caddys: 1 with installed 40GB HD; 1 empty which can contain IDE/EIDE/ATA Drive of 5400/7200/ 10000 RPM up to 2000GB
• 24 tracks at 24-bit/48kHz, 12 tracks at 24-bit/96kHz
• Digital sample rates: 44.1—96kHz
• Analog sample rates: 44.1—48kHz (HD24). Upgrade HD24 to 96kHz with the EC-2.
• Analog connections: 24 - 24-bit inputs, 24 - 24-bit outputs (1/4" TRS, +4dBu)
• Digital connections: 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).
• 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
• Dimensions: 19"W x 5"H x 17"D (483mm x 127mm x 432mm), 3U rackmount
• 20lbs.

Alesis ADAT-HD24 Digital Recorder

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Average of 18 User Ratings

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One of the best units out there

Posted by Dream Chamber Studio from Florida on Dec 16, 2009

Experience w/product: I own it

Reviewer's Background: Recording Studio

Reviewer's Play Style: Rock, Heavy, Folk

My studio was using a multi-track reel-to-reel machine for awhile (still use 1/4" reel for final mixdown). I decided to incorporate one of these into my system while still maintaining the board and outboard processing setup used with the reel-to-reel machine. This is a quality machine. What really stands out and makes this stand out are the converters. This should be priced way higher than it is for the converters alone. Tape tracking adds a natural compression that gives a deep, big sound to recorded music when run at high speeds. This unit adds that big sound. The sound coming back to the board is much more robust and rich than the signals being sent through the board. In this setup, it is a great solution to record the tracks. It also has a lot of onboard options if you mix "in the box", but I do not. I use IDE hard drives like tape reels, and easily switch them out from the front drive bays for each separate album. Pop in a new standard IDE hard drive and you're ready for a new client/session.

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I bought this for full band recording....

Posted by bpb from FLA on May 11, 2009

Experience w/product: I own it

Reviewer's Background: Producer / engineer / musician

Reviewer's Play Style: rock

I bought this for full band recording. I've done several project from Large movie soundstages to small clubs, it worked flawlessly with my Panasonic DA7 digital board. The included TRS and lightpipe inputs make it a deal at the price. Do yourself a favor and get the Fireport for file transfer...all other options are SLOW.

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super toy...

Posted by Lonzenator from Pensacola, fl on Dec 21, 2008

Experience w/product: I own it

Reviewer's Background: recording engineer/musician/techno geek

Reviewer's Play Style: classical/rock/praise and worship

I purchased this unit to use in a project studio. I have owned other recorders such a Fostex FD-8 (an incredible unit in its own respects). The hd-24 has been a trouble free, easy to use machine and gets great recordings every time. The converters (even at 44/16) sound incredible. Again, What you put in, is what you get out. The unit offers plenty of headroom and I have yet to over run a track converter level wise. This unit has been used to pull a full 24 track live recording and gave perfect results. I have been able to cut numerous demos w/out a hitch.

I am currently doing a full CD project for my church and the results thus far, have been stellar.

The main suggestion is to forget using the network option and purchase the fireport for transfer to your daw for editing and subsequent mixdown. This unit does require a substantial investment to get the most out of it (i.e. mixer, good headphones and monitors) and it is not a playtoy, but it will give an awesome recording if you know what you are doing.

Buy this and then plan on investing in good mics and pres. This will equal any other unit on the market. Remember, Alesis set the standard in adat recording and held the market for years. This unit has been around for a long time and I don't see it going anywhere soon. I must stress, this is not an entry level unit. It is made to cut real track for real projects, not just playing in the bedroom, but it can do that as well.

Email me for any questions. I will answer.

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Best Hard Disk bang for buck

Posted by gb from Cottonwood Alaska on Jul 26, 2008

Experience w/product: I own it

Reviewer's Background: Active recording musician

Reviewer's Play Style: Rock Alt country

I have had one of these for a couple of years and I really like it. Alesis writes some of the best manuals out in recording land and they make it pretty easy to do even the advanced functions. Make sure you test your drives on all tracks though because some of the legacy drives are not fast enough to keep up with more than 8 or so tracks and you will get the dreaded buffer underun message upon playback although all might seem well when recording. For critical sessions fully test your drives with full program recording and playback on all tracks and you will be happier with the outcome. For people who need 24 tracks and remote recording possibilties this box is your path to easy recording. Use these with a UPS so the unit doesn't crash mid session. If you don't you'll be kicking yourself when you lose that great take.

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Going to buy an additional one

Posted by fmradio man from Winchester, VA on Jan 18, 2008

Experience w/product: I own it

Reviewer's Background: Recording Engineer, On-location musicals

Reviewer's Play Style: Rock, Blues, Southern Gospel, Contemporary Chr.

The answer to my on-location multitrack recordings. As others have stated, so easy to use. 40 hours of 24 tracks is awsome. Just set it and forget it. I wish I could transfer faster via the ethernet though. Copy buffer could be a little bigger. Just don't use Maxtor hard drives. My second unit is on the way.

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Alesis ADAT-HD24 Digital Recorder

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