The most obvious choice would seem to be something from PS Audio. I like their power cords. They may not always be the best in every circumstance, but they never suck, and same-brand synergy is an attractive possibility. Many online PS Audio dealers offer a 30-day return period, so you could burn it in, try it out, and return it if it's a bad match.
I recently switched to all Zu cable in my 2-channel system--ICs, speaker cables, and power cords. The focus and synergy are beyond anything I had with mixed brands of cables. I'm not necessarily pushing for Zu; in fact, since you have a PS Audio DAC and are already using a PS Audio PC on your integrated, a PS Audio power cord for the DAC is the first logical place to look.
I recently switched to all Zu cable in my 2-channel system--ICs, speaker cables, and power cords. The focus and synergy are beyond anything I had with mixed brands of cables. I'm not necessarily pushing for Zu; in fact, since you have a PS Audio DAC and are already using a PS Audio PC on your integrated, a PS Audio power cord for the DAC is the first logical place to look.