Prices are conspicuously missing from the TacT Audio website, so I asked them in an email:

RCS 2.0 DD         $ 2,950.-    (basic version, Digital in/out only)
DA module          $   599.-    (Analog output, 24/96 converter module)
AD module          $   699.-    (Analog input, 24/96 converter module)

RCS 2.2            $ 4,900.-    One configuration only, Digital+analog in, analog out only.

Millennium Mk. II  $10,300.-

TCS                $ 9,990.-

It would be a while before I can drop that kind of money on a home audio system.

Borislav