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Alesis ADAT-HD24 Digital Recorder

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Product 246021
Product Price $0.00
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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 ...Click To Read More About This Product

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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.

  • 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
  • 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.
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Review Snapshot

by PowerReviews

(based on 20 reviews)

Ratings Distribution

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Reviewed by 20 customers

Displaying reviews 1-20

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(3 of 3 customers found this review helpful)



By bpb

from FLA

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.

(2 of 2 customers found this review helpful)


super toy...

By Lonzenator

from Pensacola, fl

See all my reviews

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.

(2 of 2 customers found this review helpful)


One of the best units out there

By seekerofrock

from Florida

See all my reviews

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.

(1 of 1 customers found this review helpful)


Totally awesome

By Jimmy K. Productions

from Buffalo, NY

If there was a video instructional, it would be the best. For right now, experiment, & enjoy.

(1 of 1 customers found this review helpful)


Throw away your Studer, Tascam, Otari Etc.

By Charlie Castro

from Parlin, NJ

I never thought I'd see the day when I could make amazing 24 track masters for under 2K. Having owned a 3M-M79, Studer A-800 and various other high tech analog machines, I still find it hard to belive that this 3 rack space gem could out perform all of them, and then some. The sonic detail on this machine is great. The operation of it is extremely easy and the results are breathtaking. I was an analog beliver until I heard this unit. There is no comparison between this HD-24 and your top of the line Analog recorders. I have done the A-B test, and even recorded simultaneously to both, and I ended up using the Alesis HD-24 for its sonic detail, clarity and ease of operation. I strongly recommend this machine to anyone looking to produce high quality 24 track masters.

(1 of 1 customers found this review helpful)


An Alesis gem

By Dan, of

from Kittery Point, Maine

I've had my HD24 for 77 years now. When I bought it I thought I was getting something I could use until I "upgraded". Forget that. I've never bothered. I worked and recorded in some very high end studios, and this does it all. I record on my Adat, and I edit and master on the computer. This, some nice pre's and mics, and you can do projects you can be proud of. People come to me now to record, and either we edit, they edit, or they ship it off to a production site. Thanks Alesis, you've kept me alive.


I absolutely love my 3 HD24 Alesis Adats

By Ringside Rod

from Vancouver Island, BC

I use one in my bands jam space along with 24 channels of Fostex for inputs and a Mackie 24 Channel Mixer for Mixdown. Also have an HD24 in a rack with a 16/in 16/out Soundcraft Mixer for Mobile Multi-Track
Recording....Am currently setting up a serious recording room with an hd24n with individual tube mic preamps and a Mackie 40 channel Mixer....3 sets of studio monitors. The HD24's practically run for free and between all 3 units..i have never encountered a single issue.... extremely Rich Quality.

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Greatest Machine Ever

By Barry Davis Sr

from Baltimore, MD

I own two of these machines for 48 tracks and use them in the studio and also for live recording. They perform and also travel very well. The only thing it lacks is onboard cropping and a better locking catch for the HD's, during transport they should be removed anyway. Coupled with the fireport, this machine screams!I even have recorded up to 4.5 hours straight of music live. The only catch is, without onboard cropping, you should only record the max of 4 hours 48K @ 24 bit making the track wav files under 2GB which is Windows' limit. The mac has no limit for a wav file. With the cropping feature you could break the 24 tracks into individual songs onboard for transfer to the computer for mixdown and then mastering.With this machine you no longer have to worry about the 16/30 format anymore for duplication facilities. This will give you the very best quality for the lowest price ever! Trust me, this is a winner. Even without the upgrades, it is awesome. The factory told me of some NEW upgrades that will be coming for it via a firmware upgrade in the first part of 2005. I can't wait for it! I may get one more machine to upgrade the studio to 72 tracks.


A lot of bang for the buck but ...

By Record Master

from San Diego, CA

We rented one of these units this weekend for a mobile production and I have to say it was beyond easy to use. I never had to unwrap the manual. It worked just like you would logically think it would. A dream! My __only__ complaint is that I don't believe in using optical (lightpipe) to get my audio off the unit because of timing and jitter problems so I use ethernet. I have a gigabit network at the studio and this unit only has a ten megabit connection. It took almost 30 hours to get four hours worth of recording off. With gigabit that would have been an hour. Other than that, it's an awesome machine and I probably will buy one if they ever upgrade to gigabit.


great adat machine

By jordan s

from marianna florida

See all my reviews

There is not a single thing wrong with this machine. It is amazing at what you can do with it. I have found that if you record analog, it will have a warmer, better quality than digital even though it is easier digital. The best digital sound is running it with a mackie d8b mixer and protools.



By Michael-qdhTc

from Pittsburgh, PA

This piece of gear is excellent for recording live shows and being able to transfer them to ProTools. I have recorded a few projects that have been used for demos, but I have an actual CD being released in the next month.I'm going to get the Fireport soon, though the FTP feature was slow, I left it runring overnight and was still able to hand a project on a firewire drive the following day.


i own one and you cant have it back

By jingle house recording studios

from australia

been using it in studio sit for 12months not a single problem except finding info on fire port and big remote


Travelling Vocal Jazz Group Very Pleased

By satstar17

from Pasco, WA

I'm the sound tech for a vocal jazz group in Washington state and we are so pleased with this item we've bought a second one and this year used it to record an entire album. We also take them both on tour with us all over the continental United States. They travel very well!


The perfect recording machine.

By Scott.

from Lancaster Pennsylvania

See all my reviews

It took me a while to get use to the editing features.And now that I'm use to it, every project go's so much smoother than any machine I ever worked with. It's also trouble free.I've had mine all most 2 years,and never needed to ship it out for service,unlike the adat tape base machines.I also have cubase on my pc,but never had to use the program with my hd24.The hd24 never lets me down when I need to edit or punch in and out of tracks.I'm thrilled with this thing.When I can aford it,I'm adding another hd24 to my home studio.I would really like to see alesis come out with a BRC type remote controll for the hd24 in the near future.



By Eric EAProductions

from Clinton, MD

See all my reviews

This is an awsome peice of equpment. I've had mines for little over a year and it never let me down. I'm still learning the features such as editing and all that but I'm able to just go straight to recording and the digital sound quality is perfect. I've use it on the road to record my group live performances and it came out wonderful. It is so much inexpensive and better to buy an 80-120gig internal hard drive than a lot of tapes. Alesis has done it again, Great job Alesis.


Audio WorkShop Recording Studios

By AudioWorkShop Recording Studios

from California/ Victorville

I must say this unit suprised me. The Sound Quality is outstanding. I am used to Studer Analog machines, so I was convinced that Nothing could sound as Big As 2 inch Tape at 30ips, but wow.The only thing that I don't like is that other companies offer UNDO. I mean if I record something, I can undo it if I don't like it instead of having to Re-Record it, I am not talking about Undoing an edit. I also feel that HD24 NEEDS TO BE A LITTLE MORE COMPATIBLE TO THE BRC and it's not. For the price this machine is TOPS, as I almost invested more in a MX2424 but I am glad I didn't. I am thinking now of investing into a couple more units. I am truly sold on this machine.


A 24 Track digital studio in one box.

By Redemption Records

from Miami

Great for any studio, Awesome expansion capabilities. No harshness for a digital recording. Bye-bye tapes. the "plastic face" well Don't judge a book by its cover.


Going to buy an additional one

By fmradio man

from Winchester, VA

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.


Excellent Recorder

By Will-Jny8s

from Fairborn, OH

I been doing recording for a while now. This machine is by far the best gear I've owned. You have industry standard at your fingertips. Tranferring music from your computer to the HD24 is a snap with easy setup through ethernet.


Best Hard Disk bang for buck

By guitar bill

from Thundering Woods, AK

See all my reviews

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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