A:AnswerYou can use any brand speaker with this receiver, and you do not need an additional amplifier as this receiver has a built in amplifier. Just connect your speakers via the red/black terminals on the back, and connect your CD player via RCA/Optical/Coax (whichever connection your CD player has) and follow the setup instructions. You'll be all set.
A:AnswerI am using this receiver with an LG 70" 4k TV utilizing the Digital Audio output (receiver has 2) and it works great the only issue I had was getting my harmony remote to change the input on the amp took a few tries to get that right.