Here is a bunch of discussion on the ADS:
https://vpiindustries.com/forum/viewtopic.php?f=9&t=7553
More info:
http://www.soundstagedirect.com/vpi-ads-audio-equipment.shtml
If you read all the way through the forum post above, Harry says it's way better than the SDS.
https://vpiindustries.com/forum/viewtopic.php?f=9&t=7553
More info:
http://www.soundstagedirect.com/vpi-ads-audio-equipment.shtml
If you read all the way through the forum post above, Harry says it's way better than the SDS.