The system you are talking about is O scale right? Made by Lionel. Yes you can control the sounds from a standard power pack like what comes in a train set as long as it has horn and bell buttens. However for around $250 you can get the Legacy control system which has way more fetures, if you ask me it's well worth the price, however if you use it with locomotives that don't have TMCC or Legacy you have to buy a seperate converter box. Hope this helps!
And yes the sound is totally worth it.
Ryan
And yes the sound is totally worth it.
Ryan