I have a 4 room built in the ceiling speakers system before purchasing a sonus connect. I have a Niles 4 speaker integration system hooked up to my A channel on my receiver. The sonus connect only plays through my CD input on my Yamaha receiver. To play my CD player I use the line in on my sonus connect but cannot control the master volume on my amplifier. The CD player will not play through any other input on my receiver. If I buy a sonus amplifier will I still use the sonus connect to use my home audio system? can I hook my CD player directly into the sonus amplifier? and is there a master volume control on the amplifier?