I would like to hook up another amp to my intergrated NAD 3400 but I am already using the pre outs to provide my sub with signal. I know that I can use a y adapter to gain another set of outputs but I am curious; Does splitting the signal have an effect on the total output, I mean do you lose signal by splitting it? How many times can you split it, can you put two y's together to get three, three y's together to get four? The amp I am looking at is the NAD 2400 and I know it is not daisy-chain capable (no pre out). All answers will bw appreciated!