[sdiy] audio controlled light show

[Brett, Bill]

Greetings,
I am building a light controller that responds to an audio input. I have
figured out how I will do the audio signal to logic part of the circuit.
Question... how do I turn on/off the 120 AC for the lights. I thought of
using relays, but this will produce a slight lag between audio beat and
light pulse. Of course this lag will be added to the lag of the light
powering up. Maybe this lag is insignificant? Does anyone now of a schematic
that uses solid state to do this?
Thanks
-Bill