It's hard to imagine that their board is through hole. If anyone could turn this into a through hole project, I'm sure Robert is that person ;~). If it's super dense, might mean a stacked board. And I'd want this in a 1590 size, which may help. The 125ma draw has me curious about what's in it.
7 KHz, even with a narrow band, is plenty high for guitars, but keyboards and synths, etc. could certainly use higher.