In the less I would put the sound, which frankly is "bad", sizzling, but there is an output jack that I tested quickly, the next best record is really what you plug it (but does not disconnect the speakers from game).
A second less, I find that the dart hitting sound is not attenuated whole, and approaches a cheap game, the manufacturer could have made more efforts on latténuation of this noise, I ' there was reached with some "tinkering", but at that price it would have been minimal. (I would be curious to test a target at 500 to see if that point is taken into account or not).
Finally, a very good target anyway, well equipped, very comprehensive manual in French, nice enough (away from the ugly cabinets that can see elsewhere), and the multi display is really complete and perfectly punctuates the parties.