I have such a board in a space shuttle. SFX sounds are fine. Speech is super loud. On old sys-9 board combo there was a pot to turn down the speech volume that was separate from the main volume pot. This board it is absent and no way to adjust speech volume so I have to turn the whole thing down lower. Other than that it is great to have the game up and working. Seemed like I was working on system 9 boards every few months and it was a super pita.