There can never be dc at the output of any amp with output transformers. Current is induced in the secondary (output side of the transformer) by the changing magnetic field induced by the primary; if the current on the primary is not changing (dc), there is no induced current in the secondary.
As far as I can tell from the Primaluna site, they use toroidal transformers only in the power supply to their hybrid and all of the output transformers are not toroidal types.