We had wireless chimes but due to thick walls, electrical interference etc. they aren't very good, these are the second set we have had, so it's a no to wireless. I asked a company that specialises in door bells and got this "
Hello Jason.
I regret, you cannot have this number of bell units on 1 system, the
maximum we recommend is 2, with a maximum cable length of 9 m.
You will suffer "voltage drop" along the cable length at the voltages
that doorbells operate at, and the units will not receive enough power."
So gave up on traditional bells, and I suppose I was just rambling too, I know you can get speakers that had their own volume controls I just thought I could run four speakers of an amp, instead of bells, my first thought was run a mic from the amp and place it by a traditional door bell, but I thought someone might know a better way of getting a sound into the system at the press of the bell push.
Thanks for your interest.