I own Jadis gear, not DA50 but monos and power cord makes big difference. In fact not only power cord but even a power plug type (gold plated, palladium plated, etc.).
If you do not hear a difference it may be caused by not very resolved speakers. In highly resolved system almost all change is audible.
First of all I STRONGLY recommend you to change your main fuse. After many experiments I found the best Synergistic Research SR20 fuses. They replaced my older Furutech fuses.
When you change the fuse you may try power cord.
I would recommend top of the line Transparent Audio power cord or good quality DIY cord with Oyaide 004 plugs.
If you do not hear a difference it may be caused by not very resolved speakers. In highly resolved system almost all change is audible.
First of all I STRONGLY recommend you to change your main fuse. After many experiments I found the best Synergistic Research SR20 fuses. They replaced my older Furutech fuses.
When you change the fuse you may try power cord.
I would recommend top of the line Transparent Audio power cord or good quality DIY cord with Oyaide 004 plugs.