I would second the Edge Electronics amp lineup, the NL or the G series. I have not heard the Pass Labs 350.5 so I am not sure what I maybe missing.
With a sensitivity of 89 dB, the more power you can afford the better. I am running planars with similar sensitivity and I tried to get the most power I could afford.
With a sensitivity of 89 dB, the more power you can afford the better. I am running planars with similar sensitivity and I tried to get the most power I could afford.