B&W N805 & S805 both are 86dB of efficiency, but one is obviously easier to drive. So, efficiency doesn't make a lot of sense in my case maybe because I listen to them in nearfield- 7 feet to left & right speakers.
Actually, I had also tried Fi 300B for several days without success. I think running out of power on bass transient or not depends largely on how much energy stored in the output transformer of SET.
Actually, I had also tried Fi 300B for several days without success. I think running out of power on bass transient or not depends largely on how much energy stored in the output transformer of SET.