Hi Sam
Yes, I used to use a DACT as a passive. I then built the TLP, using the DACT for volume. The TLP had better bass, more dynamics and was more involving. I tried the DACT passive against the GK-1. I could never go back to a DACT as a passive.
Having said that, JohnR has a passive, forced into shunt mode (or faked
shunt mode), using a Riken Ohm resistor as the shunt. This sounded very good. I forced my DACT in the GK-1 into shunt mode, using a Riken Ohm. It is probably the biggest improvement I have made to my GK-1. Perhaps the DACT is not all it is cracked up to be. It would be nice to stick a Goldpoint into the GK-1.
Regards