The Apogee Electronics AD-8000 is one of the earliest analog to digital converters that I've used, and while it's not ideal for modern digital audio recording, it can still be useful when used in the right settings. The main downfall with the AD-8000 is that it only supports up to a 48 kHz sampling rate, so if you're going to want to record at 96 K, this isn't going to be for you. The good news is that it is indeed a solid converter if you're working at 48 kHz and a 24 bit rate and also can be had on the cheap since it's pretty outdated at this point. I'd probably only recommend this if you're using your DAW for mostly non-musical purposes or already can only record at 48 K due to your interface. If you're putting together a professional recording studio, this isn't going to work however due to this lack of options in sampling rate. I'd be nice to have as an extra, but not a main converter. If this won't work for you, I'd check out the newer Apogee stuff as they're pretty much the best converters you can get.