i don't think that it's about making a mistake @ Wadia by offering SACDs in their latest models. Their hand was "forced" so to say: TEAC has stopped making redbook only VRDS transports. They decided to make multiformat transports using some of their new technology. It's called the VRDS-Neo with the "Neo" having a dual meaning - Neo as in new & Neo because it uses Neodymium magnets.
Wadia had decided long ago that these VRDS transports were one of the keys to good sound & since they wanted to keep using VRDS transports, they had no choice but to offer multi-format players.
The DigiMaster algorithm has been getting updates regularly - if you look thru an 860 manual & an 861 manual, if I remember correctly, there is diff in version. However, there are only minor tweaks as the algorithm is pretty solid & completely debugged. It also is to Wadia's liking so they are not going to mess w/ it merely to update it for updating's sake.
Wadia had decided long ago that these VRDS transports were one of the keys to good sound & since they wanted to keep using VRDS transports, they had no choice but to offer multi-format players.
The DigiMaster algorithm has been getting updates regularly - if you look thru an 860 manual & an 861 manual, if I remember correctly, there is diff in version. However, there are only minor tweaks as the algorithm is pretty solid & completely debugged. It also is to Wadia's liking so they are not going to mess w/ it merely to update it for updating's sake.