I have an A/D board from an Alesis HD24 Hard Disc Recorder. This particular board has 1 bad chip in it so there are only 22 channels of working A/D. Use it as an emergency backup part when needed (22 are better than none) or as a spare parts bin should any of the stereo A/D chips in an existing unit fail. When these were still available from Alesis, they cost $375.00. This one is $125 + shipping. Offers considered. Direct contact - rick@liondogmusic.com 
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