CON: Left and right channels are not matched to each other, and the high frequency is quite limited compared to other BAM driver models.
ON SECOND THOUGHT: Although Heaven-A comes with BAMs, the sound quality is not up to the other BAM-series. The reason why? The manufacturer, FAD, shipped Heaven-A with different sleeves than C or S, which yield slightly less performance under same condition. I personally do not find this game to be very pleasant.