Having used this at a couple of LARPs it's worked OK but wasn't particularly loud.
Great for making spooky noises in the woods but you had to be pretty nearby to hear it.
So I've upgraded to a bigger amp and this should really help.
It also now reads the directories from the SD card nicely and you can swap between directories with the 'mode' pot.
Now I'm going to lend it out to a friend so he can spook his players with it. Hope it stays working. ;-)